Electrical Engineering MCQs on DC Motor MCQs Part 2
A DC series motor is one that
A DC series motor is one that
- Can be started easily without load
- Has a poor torque
- Has almost constant speed
- Has field winding consisting of thick wire and less turns
Correct answer: 4. Has field winding consisting of thick wire and less turns
The ratio of starting torque to full-load torque is smallest in case of
The ratio of starting torque to full-load torque is smallest in case of
- Compound motors
- Series motors
- Shunt motors
- None of these
Correct answer: 3. Shunt motors
The total losses in a well-designed DC generator of 10 kW will be approximately
The total losses in a well-designed DC generator of 10 kW will be approximately
- 100 W
- 1000 W
- 1500 W
- 500 W
Correct answer: 4. 500 W
For testing two similar DC series motors of large capacity, the suitable test will be
For testing two similar DC series motors of large capacity, the suitable test will be
- Brake test
- Field test
- Hopkinson’s test
- Swinburne’s test
Correct answer: 2. Field test
Which of the below mentioned is not necessarily the benefit of DC motors over AC motors
Which of the below mentioned is not necessarily the benefit of DC motors over AC motors
- High starting torque
- Low cost
- Stability
- Wide speed range
Correct answer: 2. Low cost