Title: Motor Reversing Test
Course: Motor Controls (IC 106-IC 106) > Section: Assessments

Q: ___________ eliminate the need for forward and reversing starters because they can be used to select motor direction.
- Contactors
- Motor starters
- Motor drives
A: Contactors

Q: A direct hard wired circuit is easy to modify.
- True
- False
A: False

Q: A drum switch is not considered a motor starter because the switch does not contain overload protection.
- True
- False
A: True

Q: A(n) _________ is a manual switch made up of moving contacts mounted on an insulated rotating shaft.
- motor starter
- contactor
- drum
- pushbutton
A: motor starter

Q: A(n) _________ is the arrangement of contacts on the motor starter in such a way that both sets cannot be closed at the same time.
- mechanical interlocking
- auxiliary contact interlocking
- push button interlocking
A: mechanical interlocking

Q: Although most magnetic reversing starters provide mechanical interlock protection, some circuits are provided with a secondary backup system that uses _________ contacts to provide electrical interlocking.
- contactor
- pushbutton
- auxiliary
A: contactor

Q: It is necessary to interchange the __________ winding(s) to reverse the direction of rotation of a single-phase motor.
- start
- run
- both
A: start

Q: Push button interlocking may be used in either or both mechanical or auxiliary interlocking.
- True
- False
A: True

Q: Reversing the electrical connections to a motor may be accomplished with _________.
- magnetic reversing starters
- motor drives
- drum swithces
- PLC's
A: magnetic reversing starters

Q: The dotted lines between starter coils on a line diagram refers to which type of interlocking?
- Mechanical interlocking
- Auxiliary interlocking
- Push button interlocking
A: Mechanical interlocking

Q: The industrial standard of reversing the direction of rotation of a DC motor is to reverse the direction of current through the ___________.
- armature
- field windings
- permanent magnets
A: armature

Q: The industry standard is to interchange power lead L1 and _______ to reverse the direction of rotation of a three-phase motor.
- L3
- L2
- T1
- T2
A: L3

Q: Two manual starters are connected together to create a manual reversing starter.
- True
- False
A: True

Q: When troubleshooting a reversing circuit, the voltage must be within _____% of the control circuit rating.
- 5
- 10
- 15
- 20
A: 5

Q: When wiring using a(n) _______, each wire in the control circuit is assigned a reference point on the line diagram to identify the different wires that connect the components in the circuit.
- PLC
- terminal strip
- limit switch
- electric motor drive
A: PLC

Q: The expected DMM reading with the motor OFF is __________ VAC.
- 0
- 115
- 460
A: 0

Q: The expected DMM reading with the motor running in forward is ________VAC.
- 0
- 115
- 460
A: 0

Q: The expected DMM reading with the motor running in reverse is ________VAC.
- 0
- 115
- 460
A: 0

Q: The expected DMM reading with the forward and reverse buttons pressed at the same time is _______VAC.
- 0
- 115
- 460
A: 0

Q: The problem is located in the __________.
- reverse coil
- normally closed forward interlock contact
- normally closed reverse interlock contact
- reverse pushbuton
A: reverse coil