PTRT 1491 Chapter 13 - Troubleshooting AC Motors

1. A(n) _________ is the rotating part of an AC motor.

• field

• armature

• rotor

• stator

2. On a dual-voltage motor, the higher voltage is preferred for wiring because the motor will _______________

• draw less current

• produce more power

• run faster

• run slower

3. A ________________ motor has one end of each of the three phases internally connected to the other phases

• split phase

• wye-connected, three phase

• capacitor-start

• capacitor-run

4. A ______________ motor has each phase wired end-to-end to form a completely closed loop circuit.

• capacitor start and run

• delta-connected, three phase

• dual-voltage

• shaded-pole

5. ___________ is the opposition to the flow of alternating current in a circuit due to inductance

• Resistance

• Capacitance

• Kinetic Energy

• Inductive reactance

6. A ________________ is used to disconnect the starting wnding of a motor at a preset speed

• centrifugal switch

• transistor

• control relay

• thermal switch

7. A(n) ____________ added to a motor to provide a higher starting torque

• inductor

• resistor

• solid-state relay

• capacitor

8. A dual-voltage, delta connected, three-phase motor has ___________ leads coming out of the motor

• 2

• 3

• 6

• 9

9. A dual voltage, wye connected, three phase motor has ____________ leads coming out of the motor.

• 2

• 3

• 6

• 9

10. The industrial standard for reversing a three-phase motor is to interchange

• T1 and T2

• T2 and T3

• T1 and T3

• T3 and T4