+88 01714 700026 earthbondhonsms@gmail.com
Select Page

#### DC Motor Important MCQ - Electronic Engineering

The field coils of DC Motor with answers. all the important MCQ questions of DC motor in detail and also provide some important points to remember for interviews.

0%

Question 1: In DC shunt motors as load is Reduced?

• the speed will increase abruptly
• the speed will increase in proportion to reduction in load
• the speed will remain almost constant
• the speed will reduce
• Answers: the speed will remain almost constant

Question 2: Which DC motor will be preferred for constant speed line shafting?

• Shunt motor
• Cumulative compound motor
• Differentially compound motor
• Series motor

Question 3: The ratio of starting torque to full load torque is least in case of?

• series motor
• none of the above
• compound motors
• shunt motors

Question 4: In a DC series motor if the armature current is reduced by 50%, the torque of the motor will be equal to?

• 100% of the previous value
• 25% of the previous value
• 50% of the previous value
• 10% of the previous value
• Answers: 25% of the previous value

Question 5: In case of conductively compensated DC series motors, the compensating winding is provided?

• as separately wound unit
• in parallel with armature winding
• in series with armature winding
• in parallel with field winding
• Answers: in series with armature winding

Question 6: As compared to an induction motor, the air gap in a DC motor is?

• less than 50%
• between 50% and 90%
• same
• more

Question 7: Which of the following motor has the poorest speed regulation?

• Shunt motor
• Series motor
• Differential compound motor
• Cumulative compound motor

Question 8: For a DC shunt motor if the excitation is changed?

• torque will remain constant
• torque, power and speed, all will change
• torque will change but power will remain constant
• torque and power both will change
• Answers: torque will change but power will remain constant

Question 9: Which of the following motors have almost constant speed over their full load range?

• Both (b) and (c)
• AC series motors
• DC shunt motors
• Low resistance squirrel cage motors
• Answers: Both (b) and (c)

Question 10: Which of the following motor is used in the locomotives motor drives?

• Induction motor
• Synchronous motor
• AC series motor
• DC series motor

### Report Card

Total Questions Attempted: 0

Correct: 0 Wrong: 0

--

### Related Articles

#### DC Motor MCQ

DC Motors Most Important Interview Questions and Answers. Viva Questions DC motors important question and...