Course: Renee-Faculty_Template_Jones-620-303-Motors_Ind_Electrical_Systems

Q: In a forward/reversing circuit the forward coil energizes a NC contact in the?
- latching circuit
- forward rung circuit
- reverse rung circuit
- neutral zone circuit
A: reverse rung circuit

Q: The _____ button must be pressed before changing direction.
- start
- jog
- stop
- lock
A: stop

Q: A forward/reverse motor circuit needs what type of contacts?
- one coil controls both directions
- coil, N.O. and N.C. contact for each direction
- just need a forward and reverse button
- only a stop button
A: coil, N.O. and N.C. contact for each direction

Q: The neutral and hot lead in a GFI travel through what kind of electronic device
- rectifier
- sensor
- solenoid
- capacitor
A: sensor

Q: GFCI stands for _________________________.
- Ground Fault Current Interrupter
- Ground Force Current Interface
- Ground Fault Circuit Interrupter
- Green Force Circuit Interface
A: Ground Fault Circuit Interrupter

Q: As of 2001 the number of deaths from electricution decreased to what with GFCI's in newly constructed homes
- 200
- 500
- 600
- 400
- 700
A: 400

Q: Before the introduction of the ground fault circuit interupters, how many people died from household electrocutions nationally each year?
- 500
- 400
- 700
- 600
A: 700

Q: If one of the conductors comes in contact with an grounded object
- a light will turn on
- gfci will open the circuit and stop the current flow
- gfci will redirect the current flow
- stand in water to reduce the shock
A: gfci will open the circuit and stop the current flow

Q: What causes a change in current when an individual pushes the test button on a Ground Fault Circuit Interrupter (GFCI)?
- Nothing at all changes the current.
- A resistor on a branch circuit.
- A 120 Volt load.
- Your finger making contact with the button.
A: A resistor on a branch circuit.

Q: What is activated when there is an induced voltage through the coil wrapped around the ring?
- circuit breaker mechanism
- resistor
- current
- ground
- GFCI
A: circuit breaker mechanism

Q: GFCI's are almost always in what room of the house?
- Bedroom
- Living room
- Bathroom
- Dining room
A: Bathroom

Q: The pair of coils in each phase are located ___ degrees from each other
- 45
- 180
- 120
- 60
A: 180

Q: The stator coils are physically placed ___ degrees apart.
- 60
- 30
- 180
- 120
- 360
A: 120

Q: Each pair of coils are connected to
- the capacitor of the motor
- a magnetic field
- the shaft of the motor
- one phase of the three-phase AC line
A: one phase of the three-phase AC line

Q: What is the main advantage of a three phase motor?
- less mathematically complex
- it's smoother
- less expensive
- more efficient
- all of the above
A: all of the above

Q: In a forward/reversing circuit the forward coil energizes a NC contact in the?
- latching circuit
- forward rung circuit
- reverse rung circuit
- neutral zone circuit
A: reverse rung circuit

Q: The _____ button must be pressed before changing direction.
- start
- jog
- stop
- lock
A: stop

Q: A forward/reverse motor circuit needs what type of contacts?
- one coil controls both directions
- coil, N.O. and N.C. contact for each direction
- just need a forward and reverse button
- only a stop button
A: coil, N.O. and N.C. contact for each direction

Q: What is a rung and rail in a ladder system?
- Top and bottom of circuit
- the neutral side and hot side of circuit
- The horizontal and vertical lines of circuit
- The left and right of circuit
A: The horizontal and vertical lines of circuit

Q: When a coil becomes energized a magnetic _____ forms and pulls the contact closed
- Arm
- wave
- force
- field
A: field

Q: What is the disadvantage of a simple horizontal circuit?
- the motor will continue to run when energized
- need to keep the button engaged to keep the motor running
- you only need to hit the button once to start the motor
- tape the button down when operating the circuit
A: need to keep the button engaged to keep the motor running

Q: The rails of the ladder circuit consist of ____ power connections which have different voltage potentials.
- 3
- 2
- 4
- 5
- none of the above
A: 2

Q: When a magnetic field is no longer presnt in the coil of a relay, the coil becomes?
- Energized
- Broken
- De-energized
- Unchanged
A: De-energized

Q: When current flows from L1 to L2 while the start button is pressed, the current also flows through contact C1, which is parallel with the pushbutton. This causes output coil C1 to remain energized after a momentary closure of the start pushbutton. This kind of circuit operation is referred to as:
- locking
- latching
- loading
- hooking
A: latching

Q: In a simple latching circuit when you press the stop button when power is getting to the coil, you are doing what?
- The coil will lose power and contacts will return normal positions.
- The coil will remain the same.
- The coil will energize.
- The contacts will stay the same.
A: The coil will lose power and contacts will return normal positions.

Q: The line-disconnect is placed between what in a motor starter circuit
- Single-throw sitch and the fuses
- Fuses and the motor
- Power line connection and the overload heaters
- The motor and the power line connection
- Circuit breakers and the Triple pole switch
A: The motor and the power line connection

Q: ______ contacts are part of each power line and in parallel with the start button.
- N.O.
- N.C.
- P.L.C.
- P.R.
A: N.O.

Q: In industry a three-phase motor is commonly started and stopped with
- windmill
- the help of a transformer
- a motor starter circuit
- two different start buttons
A: a motor starter circuit

Q: The thermal overload contacts are:
- in series after the coil of the start relay
- normally open
- have no purpose at all
- remain normally closed after the overload heaters are tripped
A: in series after the coil of the start relay

Q: What happens if one of the lines becomes disconnected while it is running?
- the motor stops
- the motor speeds up
- the motor continues to run but draws more current
- the motor blows up
A: the motor continues to run but draws more current

Q: The three phase lines that supply power to the motor are labeled what?
- L1, L2, L3.
- A, B, C.
- Z1, Z2, Z3
- T1, T2, T3
A: T1, T2, T3

Q: When calculating the service factor to find max amps of a motor you should _______?
- multiply volts times the SF
- multiply amps times the SF
- Divide amps by SF
- Divide SF by the line voltage
A: multiply amps times the SF

Q: It's important to protect a motor from excessive current to avoid _______
- Erotic behavior
- Blown motor
- Fire
- A and B
- B and C
A: B and C

Q: What are two things you need to consider when sizing thermal protectors.
- rated current value at full load and maximum temperature it can operate
- number of fuses and overloads
- amp rating and pulley sizes
- weight of product and speed of motor
A: rated current value at full load and maximum temperature it can operate

Q: Which of the following conditions does not cause excessive current flow through the motor, control circuitry, and their conductors?
- Overloads
- Short curcuits
- Single phasing
- an undersized load
A: an undersized load

Q: A prolonged overload means what?
- the motor waits to burn up
- driving to heavy of load for an extended period of time
- not enough power to the motor
- a and c
A: driving to heavy of load for an extended period of time

Q: A ____ prevents the motor from being damaged.
- overload
- thermal protectors
- resistor
- fuse
- capacitor
A: overload

Q: The ability to control relays with DC in a AC circuit is called
- AC/DC
- Fluxing
- Interfacing
- Inductive reactance
A: Interfacing

Q: What does N.C. mean
- No cookies
- Normally closed
- Not concealed
- Never correct
A: Normally closed

Q: When energized the coil attracts the _________.
- armature
- switch
- purple
- rung
- ladder
A: armature

Q: A common application for a relay is what?
- an easy way to connect L1 to L2
- their easier to fill out at McDonalds
- thier used instead of a light switch
- to connect to one type of voltage to control another circuit that operates at a different voltage
A: to connect to one type of voltage to control another circuit that operates at a different voltage

Q: A relay consists of what?
- lamp and switch
- coil and magnet
- contacts and coil
- energizer and bunny
- dc and ac current flow
A: contacts and coil

Q: When a multi-rung control is implimented in a ladder circuit an ______ relay coil in one rung will control the operation of _______ in one or more rungs.
- input, coils
- output, inputs
- output, circuits
A: output, circuits

Q: In the example from the reading, when the N.C. button is pressed, it causes which of the following situations to not occur?
- The current path in rung 1 opens and the output coil is de-energized.
- The current path continues to supply voltage to both the green lamp and red lamp.
- The N.O. contact in rung 2 opens, causing the green lamp to turn off.
- The N.C. contact in rung 3 closes, causing the red lamp to turn on.
A: The current path continues to supply voltage to both the green lamp and red lamp.

Q: What is a feature of a ladder circuit?
- rungs
- coils
- pushbuttons
- all of the above
A: all of the above

Q: What does N.O. stand for?
- No means no.
- Not original.
- Normally open.
A: Normally open.

Q: On a ladder logic schematic where are the inputs and outputs located?
- Tops of rails inputs on left/ outputs on right
- outputs on left side rung/inputs on right side of rung
- outputs on bottom right of rail/inputs on top left of rail
- inputs on left of rung/outputs on rt of rung
A: inputs on left of rung/outputs on rt of rung

Q: A control device is on which side of the rung
- Left
- Right
- Middle
- Top
A: Left

Q: Which of the following is NOT an element of a ladder logic circuit?
- A power source
- A reactor
- A control device
- A load at the out put
- Interconnecting wires
A: A reactor

Q: On a normally closed push button switch, the horizontal line of the schematic symbol
- not in contact with the end circles
- contact on left side
- just a horizontal line
- contact with both circles
A: contact with both circles

Q: A load at the output,such as a light, is on which side of the rung?
- left
- right
- middle
- top
A: right

Q: Which of the following is not a manual switch?
- Palm operated push button
- N.C. push button
- N.C. pressure switch
- N.O. push button
A: N.C. pressure switch

Q: On a normally open push button, the schematic symbol has the horizontal line attached to vertical line that looks like an upside down "T". This symbol has the horizontal line sitting where?
- In the middle of the rung.
- Above the rung.
- Below the rung.
- On the left side of the circles
A: Above the rung.

Q: If the power supply connections were reversed.
- it would rotate in reverse
- it will not change its rotation direction
- it will blow up
- it will not move
A: it will not change its rotation direction

Q: To change the relative direction of the lines of flux between armature and field coils,
- reverse the field windings
- reverse the armature windings
- both field windings and armature windings
- A or B, but not both
A: A or B, but not both

Q: To change the direction of motor you change what?
- Field windings
- Armature windings
- Field windings and armature windings
- A or B
A: A or B

Q: Useing the formula RPM=(60*f)/P what is the RPM's if P=3 and f=60
- 3600
- 1800
- 600
- 1200
- 900
A: 1200

Q: Factors that determine the speed at which the stator's magnetic field revolves do NOT include.
- frequency of the applied voltage
- color of wires
- number stator poles
- none of the above
- all of the above
A: color of wires

Q: In the United States the power companys set the frequency at what
- 60Hz
- 180Hz
- no set number
- 120Hz
A: 60Hz

Q: The speed at which the stator field rotates is called
- Max speed
- Synchronus speed
- Warp speed
- Continuous speed
A: Synchronus speed

Q: What are factors to determine at which the stators magnetic field revolves?
- frequency of applied voltage
- # of stator poles
- amps
- both a and b
A: both a and b

Q: If useing an electric motor as a load, what specifications must be considered for selection of a transformer
- The frequency
- The voltage
- The amps
- A and B
- B and C
A: The voltage

Q: To find the correct KVA one must?
- multiply ohms x amps x volts
- multiply volts x amps + 1000
- Divide volts by amps x 1000
- multiply volts x amps x 1000
A: multiply volts x amps + 1000

Q: Why is it important to fulfill the proper specifications when selecting a transformer?
- Equipment connected to transformer will not run properly
- Cause equipment to run backwards
- Safety hazard can develop
- Both A and C
- Both B and C
A: Both A and C

Q: When selecting a transformer. Where can you find the specification requirements?
- manufacturer data manual
- the name plate on the load
- in your book
- Both A and B
- Both B and C
A: Both A and B

Q: The transformer must have a KVA rating that is _______ the capacity required by the load.
- equal to
- less than
- greater than
- both a and c
A: both a and c

Q: A transformer must provide 230 volts for 5 machines. Each machine draws 30 amps. What should the KVA rating be for the transformer?
- 30.6
- 32.4
- 34.5
- 35.6
- 36.8
A: 34.5

Q: What does KVA stand for?
- kilo-volt-ampere
- kill-volt-ampere
- kilowatt-volt-ampere
A: kilo-volt-ampere

Q: What are other names for a selector switch
- Toggle switch
- Rotater switch
- Flick switch
- A and C
- A and B
A: A and B

Q: When there is a connection made on a switch it represented by a(n)__.
- O
- C
- X
- R
- P
A: X

Q: A selector switch is a?
- used as a three way switch
- is used to replace a start button
- a multi-positional device
- has only one contact
A: a multi-positional device

Q: When there is no connection made on a switch it represented by a(n)__.
- J
- X
- O
- K
- L
A: O

Q: Selector switches are multiposition devices that:
- connect more that one set of contacts.
- are not called three position switches.
- are not called two position switches.
- connects just one contact.
A: connect more that one set of contacts.

Q: ______________ are used to show the contacts that are connected for each position of the switch.
- truth tables
- lights
- ladder circuits
- arrows
A: truth tables

Q: Phase splitting is achieved by adding a _____ to the circuit
- Resistor
- Capacitor
- A single phase
- Diode
A: Capacitor

Q: The armature of a single phase motor turns because
- the overload is tripped
- the polarities are the same
- it interacts with the stator's rotating magnetic field
- none of the above
A: it interacts with the stator's rotating magnetic field

Q: Electrical motors provide mechanical power from a ________?
- rotating shaft
- stator
- rotor
- bearing
- pulley
A: rotating shaft

Q: Which one of the 3 types of motors has the highest starting torque but the worst constant speed regulation?
- compound motor
- series motor
- shunt motor
- wound field motor
A: series motor

Q: DC power source that supplies the current from the armature is also
- used to supply the current to the field windings
- used to produce a magnetic field
- controlling the speed of the motor
- used to cool the motor
A: used to supply the current to the field windings

Q: What is the part of the motor that rotates?
- the terminal box
- the end bell
- the armature
- the field assembly
- none of the above
A: the armature

Q: Shunt, series, and compound motors are classified by how their field windings are connected to the DC supply in relation to the?
- End bell
- Armature
- Start button
- Stop button
A: Armature

Q: What are the three principle types of wound field DC motors?
- electro-mechanical, inductive, and flux
- shunt, series, and compound
- compound, electric, and friction
- shunt, compound, and gas
- inductive, electric, and shunt
A: shunt, series, and compound

Q: What type of DC motor has a relatively low starting torque and has a constant speed under varying load conditions?
- Series DC motor.
- Shunt DC motor.
- Compound DC motor.
A: Shunt DC motor.

Q: When the coil of a contact is energized what is this action called?
- Binding
- Hooking
- Latching
- Fusing
A: Latching

Q: What does the N.O. in N.O. push button stand for?
- Not Open
- Not Operational
- Normally Optimistic
- Normally Open
- Not On
A: Normally Open

Q: What does N.C. stand for in a N.C. Stop Switch?
- Normally Closed
- Normally Cancelled
- No Cuurent
- Not Closed
A: Normally Closed

Q: A _______ can be added to a storage tank so the water level never drops below the outlet pipe damaging the pump.
- failsafe N.O. float switch
- failsafe N.C. float switch
- failsafe overflow
A: failsafe N.O. float switch

Q: To eliminate the operator from having to restart the flow again, what kind of stop switch is installed?
- momentary stop switch
- normally open switch
- normally closed
- all of the above
A: normally closed

Q: A relay consists of what two parts?
- coil and manual switches
- coil and contacts
- contacts and wire
- Coil and flux lines
A: coil and contacts

Q: The schematic of a limit switch with both NO and NC contacts what does the broken line indicate
- electrically connected
- A neutral path
- mechanically connected
- operating in two positions
A: mechanically connected

Q: The unoperated condition of a limit switch is?
- It has blown a fuse
- No one turned the thing on
- The switch is neither open or closed
- in it's normal state
A: in it's normal state

Q: When an object makes physical contact with a limit switch, the switch is in its _________.
- boken operation
- operated condition
- normal condition
- unoperated condition
A: operated condition

Q: ________ switches are commonly used in pumps, air compressors, and lubrication systems.
- Level
- Flow
- Pressure
- Temperature
A: Pressure

Q: _______ switches are commonly used to detect the presence of a moving object when the object reaches a specific location.
- limit
- lift
- bottom
- spot
- jog
A: limit

Q: Why is it good practice to jog the machine to a nice working position before you shut it down for lock out/tag out repair?
- Less strain on motor during start up
- Easier to work on machine
- Makes it possible to remove the tooling for a change to another job
- Machine gets to cool down quicker
A: Easier to work on machine

Q: A(n)_________ is used when there are between 2 and 6 workers employed during a lockout.
- multilocker
- fish hook
- hasp
- six pack
A: hasp

Q: The lockout-tagout procedure is used to do what
- Annoy you
- Laugh in the operators face
- Prevent injurey
- Show that your in charge
A: Prevent injurey

Q: Who enacted lockout/tagout as a safty procedure?
- OSHA
- trade unions
- the auto industry
- the plant manager
A: OSHA

Q: When turning off electrical disconnect you should?
- hit the lever with a hammer
- do it when the machine is running
- stand to the side of the box and look away as you engage the lever
- watch to see if there are any sparks
A: stand to the side of the box and look away as you engage the lever

Q: The most important step in the Lockout Tagout procedure is to?
- Locate the machine thats to be locked out.
- Have the machine stopped normally and put into a specific position if needed to make the maintence task easier.
- Take a sip of coffee and a bit of your donut after each step.
- Verify that the machine will not start by pressing the start button.
A: Verify that the machine will not start by pressing the start button.

Q: When there is only one plug to insert into the socket you would use a _______ to complete the lockout/tagout.
- glove
- plug lockout
- hasp
- screwdriver
- piece of gum
A: plug lockout

Q: The only person able to remove a lock-out is?
- JD
- The machine operator
- The person who put the lockout on.
- The 2nd shift mechanic
A: The person who put the lockout on.

Q: The neutral and hot lead in a GFI travel through what kind of electronic device
- rectifier
- sensor
- solenoid
- capacitor
A: sensor

Q: GFCI stands for _________________________.
- Ground Fault Current Interrupter
- Ground Force Current Interface
- Ground Fault Circuit Interrupter
- Green Force Circuit Interface
A: Ground Fault Circuit Interrupter

Q: As of 2001 the number of deaths from electricution decreased to what with GFCI's in newly constructed homes
- 200
- 500
- 600
- 400
- 700
A: 400

Q: Before the introduction of the ground fault circuit interupters, how many people died from household electrocutions nationally each year?
- 500
- 400
- 700
- 600
A: 700

Q: If one of the conductors comes in contact with an grounded object
- a light will turn on
- gfci will open the circuit and stop the current flow
- gfci will redirect the current flow
- stand in water to reduce the shock
A: gfci will open the circuit and stop the current flow

Q: What causes a change in current when an individual pushes the test button on a Ground Fault Circuit Interrupter (GFCI)?
- Nothing at all changes the current.
- A resistor on a branch circuit.
- A 120 Volt load.
- Your finger making contact with the button.
A: A resistor on a branch circuit.

Q: What is activated when there is an induced voltage through the coil wrapped around the ring?
- circuit breaker mechanism
- resistor
- current
- ground
- GFCI
A: circuit breaker mechanism

Q: GFCI's are almost always in what room of the house?
- Bedroom
- Living room
- Bathroom
- Dining room
A: Bathroom

Q: The pair of coils in each phase are located ___ degrees from each other
- 45
- 180
- 120
- 60
A: 180

Q: The stator coils are physically placed ___ degrees apart.
- 60
- 30
- 180
- 120
- 360
A: 120

Q: Each pair of coils are connected to
- the capacitor of the motor
- a magnetic field
- the shaft of the motor
- one phase of the three-phase AC line
A: one phase of the three-phase AC line

Q: What is the main advantage of a three phase motor?
- less mathematically complex
- it's smoother
- less expensive
- more efficient
- all of the above
A: all of the above

Q: What is a rung and rail in a ladder system?
- Top and bottom of circuit
- the neutral side and hot side of circuit
- The horizontal and vertical lines of circuit
- The left and right of circuit
A: The horizontal and vertical lines of circuit

Q: When a coil becomes energized a magnetic _____ forms and pulls the contact closed
- Arm
- wave
- force
- field
A: field

Q: What is the disadvantage of a simple horizontal circuit?
- the motor will continue to run when energized
- need to keep the button engaged to keep the motor running
- you only need to hit the button once to start the motor
- tape the button down when operating the circuit
A: need to keep the button engaged to keep the motor running

Q: The rails of the ladder circuit consist of ____ power connections which have different voltage potentials.
- 3
- 2
- 4
- 5
- none of the above
A: 2

Q: When a magnetic field is no longer presnt in the coil of a relay, the coil becomes?
- Energized
- Broken
- De-energized
- Unchanged
A: De-energized

Q: When current flows from L1 to L2 while the start button is pressed, the current also flows through contact C1, which is parallel with the pushbutton. This causes output coil C1 to remain energized after a momentary closure of the start pushbutton. This kind of circuit operation is referred to as:
- locking
- latching
- loading
- hooking
A: latching

Q: In a simple latching circuit when you press the stop button when power is getting to the coil, you are doing what?
- The coil will lose power and contacts will return normal positions.
- The coil will remain the same.
- The coil will energize.
- The contacts will stay the same.
A: The coil will lose power and contacts will return normal positions.

Q: When the coil of a contact is energized what is this action called?
- Binding
- Hooking
- Latching
- Fusing
A: Latching

Q: What does the N.O. in N.O. push button stand for?
- Not Open
- Not Operational
- Normally Optimistic
- Normally Open
- Not On
A: Normally Open

Q: What does N.C. stand for in a N.C. Stop Switch?
- Normally Closed
- Normally Cancelled
- No Cuurent
- Not Closed
A: Normally Closed

Q: A _______ can be added to a storage tank so the water level never drops below the outlet pipe damaging the pump.
- failsafe N.O. float switch
- failsafe N.C. float switch
- failsafe overflow
A: failsafe N.O. float switch

Q: To eliminate the operator from having to restart the flow again, what kind of stop switch is installed?
- momentary stop switch
- normally open switch
- normally closed
- all of the above
A: normally closed

Q: A relay consists of what two parts?
- coil and manual switches
- coil and contacts
- contacts and wire
- Coil and flux lines
A: coil and contacts

Q: Which one of the 3 types of motors has the highest starting torque but the worst constant speed regulation?
- compound motor
- series motor
- shunt motor
- wound field motor
A: series motor

Q: DC power source that supplies the current from the armature is also
- used to supply the current to the field windings
- used to produce a magnetic field
- controlling the speed of the motor
- used to cool the motor
A: used to supply the current to the field windings

Q: What is the part of the motor that rotates?
- the terminal box
- the end bell
- the armature
- the field assembly
- none of the above
A: the armature

Q: Shunt, series, and compound motors are classified by how their field windings are connected to the DC supply in relation to the?
- End bell
- Armature
- Start button
- Stop button
A: Armature

Q: What are the three principle types of wound field DC motors?
- electro-mechanical, inductive, and flux
- shunt, series, and compound
- compound, electric, and friction
- shunt, compound, and gas
- inductive, electric, and shunt
A: shunt, series, and compound

Q: What type of DC motor has a relatively low starting torque and has a constant speed under varying load conditions?
- Series DC motor.
- Shunt DC motor.
- Compound DC motor.
A: Shunt DC motor.

Q: Why is it good practice to jog the machine to a nice working position before you shut it down for lock out/tag out repair?
- Less strain on motor during start up
- Easier to work on machine
- Makes it possible to remove the tooling for a change to another job
- Machine gets to cool down quicker
A: Easier to work on machine

Q: A(n)_________ is used when there are between 2 and 6 workers employed during a lockout.
- multilocker
- fish hook
- hasp
- six pack
A: hasp

Q: The lockout-tagout procedure is used to do what
- Annoy you
- Laugh in the operators face
- Prevent injurey
- Show that your in charge
A: Prevent injurey

Q: Who enacted lockout/tagout as a safty procedure?
- OSHA
- trade unions
- the auto industry
- the plant manager
A: OSHA

Q: When turning off electrical disconnect you should?
- hit the lever with a hammer
- do it when the machine is running
- stand to the side of the box and look away as you engage the lever
- watch to see if there are any sparks
A: stand to the side of the box and look away as you engage the lever

Q: The most important step in the Lockout Tagout procedure is to?
- Locate the machine thats to be locked out.
- Have the machine stopped normally and put into a specific position if needed to make the maintence task easier.
- Take a sip of coffee and a bit of your donut after each step.
- Verify that the machine will not start by pressing the start button.
A: Verify that the machine will not start by pressing the start button.

Q: When there is only one plug to insert into the socket you would use a _______ to complete the lockout/tagout.
- glove
- plug lockout
- hasp
- screwdriver
- piece of gum
A: plug lockout

Q: The only person able to remove a lock-out is?
- JD
- The machine operator
- The person who put the lockout on.
- The 2nd shift mechanic
A: The person who put the lockout on.

Q: Phase splitting is achieved by adding a _____ to the circuit
- Resistor
- Capacitor
- A single phase
- Diode
A: Capacitor

Q: The armature of a single phase motor turns because
- the overload is tripped
- the polarities are the same
- it interacts with the stator's rotating magnetic field
- none of the above
A: it interacts with the stator's rotating magnetic field

Q: Electrical motors provide mechanical power from a ________?
- rotating shaft
- stator
- rotor
- bearing
- pulley
A: rotating shaft

Q: If useing an electric motor as a load, what specifications must be considered for selection of a transformer
- The frequency
- The voltage
- The amps
- A and B
- B and C
A: The voltage

Q: To find the correct KVA one must?
- multiply ohms x amps x volts
- multiply volts x amps + 1000
- Divide volts by amps x 1000
- multiply volts x amps x 1000
A: multiply volts x amps + 1000

Q: Why is it important to fulfill the proper specifications when selecting a transformer?
- Equipment connected to transformer will not run properly
- Cause equipment to run backwards
- Safety hazard can develop
- Both A and C
- Both B and C
A: Both A and C

Q: When selecting a transformer. Where can you find the specification requirements?
- manufacturer data manual
- the name plate on the load
- in your book
- Both A and B
- Both B and C
A: Both A and B

Q: The transformer must have a KVA rating that is _______ the capacity required by the load.
- equal to
- less than
- greater than
- both a and c
A: both a and c

Q: A transformer must provide 230 volts for 5 machines. Each machine draws 30 amps. What should the KVA rating be for the transformer?
- 30.6
- 32.4
- 34.5
- 35.6
- 36.8
A: 34.5

Q: What does KVA stand for?
- kilo-volt-ampere
- kill-volt-ampere
- kilowatt-volt-ampere
A: kilo-volt-ampere

Q: Useing the formula RPM=(60*f)/P what is the RPM's if P=3 and f=60
- 3600
- 1800
- 600
- 1200
- 900
A: 1200

Q: Factors that determine the speed at which the stator's magnetic field revolves do NOT include.
- frequency of the applied voltage
- color of wires
- number stator poles
- none of the above
- all of the above
A: color of wires

Q: In the United States the power companys set the frequency at what
- 60Hz
- 180Hz
- no set number
- 120Hz
A: 60Hz

Q: The speed at which the stator field rotates is called
- Max speed
- Synchronus speed
- Warp speed
- Continuous speed
A: Synchronus speed

Q: What are factors to determine at which the stators magnetic field revolves?
- frequency of applied voltage
- # of stator poles
- amps
- both a and b
A: both a and b

Q: If the power supply connections were reversed.
- it would rotate in reverse
- it will not change its rotation direction
- it will blow up
- it will not move
A: it will not change its rotation direction

Q: To change the relative direction of the lines of flux between armature and field coils,
- reverse the field windings
- reverse the armature windings
- both field windings and armature windings
- A or B, but not both
A: A or B, but not both

Q: To change the direction of motor you change what?
- Field windings
- Armature windings
- Field windings and armature windings
- A or B
A: A or B

Q: On a ladder logic schematic where are the inputs and outputs located?
- Tops of rails inputs on left/ outputs on right
- outputs on left side rung/inputs on right side of rung
- outputs on bottom right of rail/inputs on top left of rail
- inputs on left of rung/outputs on rt of rung
A: inputs on left of rung/outputs on rt of rung

Q: A control device is on which side of the rung
- Left
- Right
- Middle
- Top
A: Left

Q: Which of the following is NOT an element of a ladder logic circuit?
- A power source
- A reactor
- A control device
- A load at the out put
- Interconnecting wires
A: A reactor

Q: On a normally closed push button switch, the horizontal line of the schematic symbol
- not in contact with the end circles
- contact on left side
- just a horizontal line
- contact with both circles
A: contact with both circles

Q: A load at the output,such as a light, is on which side of the rung?
- left
- right
- middle
- top
A: right

Q: Which of the following is not a manual switch?
- Palm operated push button
- N.C. push button
- N.C. pressure switch
- N.O. push button
A: N.C. pressure switch

Q: On a normally open push button, the schematic symbol has the horizontal line attached to vertical line that looks like an upside down "T". This symbol has the horizontal line sitting where?
- In the middle of the rung.
- Above the rung.
- Below the rung.
- On the left side of the circles
A: Above the rung.

Q: The ability to control relays with DC in a AC circuit is called
- AC/DC
- Fluxing
- Interfacing
- Inductive reactance
A: Interfacing

Q: What does N.C. mean
- No cookies
- Normally closed
- Not concealed
- Never correct
A: Normally closed

Q: When energized the coil attracts the _________.
- armature
- switch
- purple
- rung
- ladder
A: armature

Q: A common application for a relay is what?
- an easy way to connect L1 to L2
- their easier to fill out at McDonalds
- thier used instead of a light switch
- to connect to one type of voltage to control another circuit that operates at a different voltage
A: to connect to one type of voltage to control another circuit that operates at a different voltage

Q: A relay consists of what?
- lamp and switch
- coil and magnet
- contacts and coil
- energizer and bunny
- dc and ac current flow
A: contacts and coil

Q: When a multi-rung control is implimented in a ladder circuit an ______ relay coil in one rung will control the operation of _______ in one or more rungs.
- input, coils
- output, inputs
- output, circuits
A: output, circuits

Q: In the example from the reading, when the N.C. button is pressed, it causes which of the following situations to not occur?
- The current path in rung 1 opens and the output coil is de-energized.
- The current path continues to supply voltage to both the green lamp and red lamp.
- The N.O. contact in rung 2 opens, causing the green lamp to turn off.
- The N.C. contact in rung 3 closes, causing the red lamp to turn on.
A: The current path continues to supply voltage to both the green lamp and red lamp.

Q: What is a feature of a ladder circuit?
- rungs
- coils
- pushbuttons
- all of the above
A: all of the above

Q: What does N.O. stand for?
- No means no.
- Not original.
- Normally open.
A: Normally open.

Q: When calculating the service factor to find max amps of a motor you should _______?
- multiply volts times the SF
- multiply amps times the SF
- Divide amps by SF
- Divide SF by the line voltage
A: multiply amps times the SF

Q: It's important to protect a motor from excessive current to avoid _______
- Erotic behavior
- Blown motor
- Fire
- A and B
- B and C
A: B and C

Q: What are two things you need to consider when sizing thermal protectors.
- rated current value at full load and maximum temperature it can operate
- number of fuses and overloads
- amp rating and pulley sizes
- weight of product and speed of motor
A: rated current value at full load and maximum temperature it can operate

Q: Which of the following conditions does not cause excessive current flow through the motor, control circuitry, and their conductors?
- Overloads
- Short curcuits
- Single phasing
- an undersized load
A: an undersized load

Q: A prolonged overload means what?
- the motor waits to burn up
- driving to heavy of load for an extended period of time
- not enough power to the motor
- a and c
A: driving to heavy of load for an extended period of time

Q: A ____ prevents the motor from being damaged.
- overload
- thermal protectors
- resistor
- fuse
- capacitor
A: overload

Q: The line-disconnect is placed between what in a motor starter circuit
- Single-throw sitch and the fuses
- Fuses and the motor
- Power line connection and the overload heaters
- The motor and the power line connection
- Circuit breakers and the Triple pole switch
A: The motor and the power line connection

Q: ______ contacts are part of each power line and in parallel with the start button.
- N.O.
- N.C.
- P.L.C.
- P.R.
A: N.O.

Q: In industry a three-phase motor is commonly started and stopped with
- windmill
- the help of a transformer
- a motor starter circuit
- two different start buttons
A: a motor starter circuit

Q: The thermal overload contacts are:
- in series after the coil of the start relay
- normally open
- have no purpose at all
- remain normally closed after the overload heaters are tripped
A: in series after the coil of the start relay

Q: What happens if one of the lines becomes disconnected while it is running?
- the motor stops
- the motor speeds up
- the motor continues to run but draws more current
- the motor blows up
A: the motor continues to run but draws more current

Q: The three phase lines that supply power to the motor are labeled what?
- L1, L2, L3.
- A, B, C.
- Z1, Z2, Z3
- T1, T2, T3
A: T1, T2, T3

Q: What are other names for a selector switch
- Toggle switch
- Rotater switch
- Flick switch
- A and C
- A and B
A: A and B

Q: When there is a connection made on a switch it represented by a(n)__.
- O
- C
- X
- R
- P
A: X

Q: A selector switch is a?
- used as a three way switch
- is used to replace a start button
- a multi-positional device
- has only one contact
A: a multi-positional device

Q: When there is no connection made on a switch it represented by a(n)__.
- J
- X
- O
- K
- L
A: O

Q: Selector switches are multiposition devices that:
- connect more that one set of contacts.
- are not called three position switches.
- are not called two position switches.
- connects just one contact.
A: connect more that one set of contacts.

Q: ______________ are used to show the contacts that are connected for each position of the switch.
- truth tables
- lights
- ladder circuits
- arrows
A: truth tables

Q: The schematic of a limit switch with both NO and NC contacts what does the broken line indicate
- electrically connected
- A neutral path
- mechanically connected
- operating in two positions
A: mechanically connected

Q: The unoperated condition of a limit switch is?
- It has blown a fuse
- No one turned the thing on
- The switch is neither open or closed
- in it's normal state
A: in it's normal state

Q: When an object makes physical contact with a limit switch, the switch is in its _________.
- boken operation
- operated condition
- normal condition
- unoperated condition
A: operated condition

Q: ________ switches are commonly used in pumps, air compressors, and lubrication systems.
- Level
- Flow
- Pressure
- Temperature
A: Pressure

Q: _______ switches are commonly used to detect the presence of a moving object when the object reaches a specific location.
- limit
- lift
- bottom
- spot
- jog
A: limit