Electrical Engineering MCQs on Induction Motor Part 20
Contents
- 1 In single phase motor the centrifugal switch
- 2 The electric motor employed in portable drills is
- 3 The motor that can be used for unity power factor
- 4 Certain single-phase induction motor runs slower than normal, the most likely defect is
- 5 The power factor of a single-phase induction motor is generally
In single phase motor the centrifugal switch
In single phase motor the centrifugal switch
- Disconnects auxiliary winding of the motor
- Disconnects main winding of the motor
- Reconnects the auxiliary winding of the motor
- Reconnects the main winding the motor
Correct answer: 1. Disconnects auxiliary winding of the motor
The electric motor employed in portable drills is
The electric motor employed in portable drills is
- Capacitor run motor
- Hysteresis motor
- Repulsion motor
- Universal motor
Correct answer: 4. Universal motor
The motor that can be used for unity power factor
The motor that can be used for unity power factor
- Capacitor run motor
- Hysteresis motor
- Schrage motor
- Shaded pole motor
Correct answer: 3. Schrage motor
Certain single-phase induction motor runs slower than normal, the most likely defect is
Certain single-phase induction motor runs slower than normal, the most likely defect is
- Open-circuit in the winding
- Short-circuit in the winding
- Worn bearings
- None of these
Correct answer: 3. Worn bearings
The power factor of a single-phase induction motor is generally
The power factor of a single-phase induction motor is generally
- Always leading
- Lagging
- Unity
- Unity to 0.8 leading
Correct answer: 2. Lagging