Basic DC Motor MCQs - Electronic Engineering
Advertisements
DC Motor MCQ and their applications. DC Motor for Electronic Engineering The direction of rotation of a DC series motor can be changed.
- Hopkinson's test
- Running down test
- Brake test
- Block Rotor test
Question 1: Which of the following tests can be conducted on all types of DC machines?
Answers: Brake test
- full load
- part load
- low Load
- no load
Question 2: Hopkinson's test is conducted at?
Answers: full load
- not start automatically
- start automatically without trouble
- develop very low torque
- get damaged
Question 3: If the no-voltage release of a DC Motor starter fails to work on resumption of supply after a break, the motor will?
Answers: get damaged
- interchanging supply terminals
- interchanging field terminals
- either of (a) and (b) above
- None of the above
Question 4: The direction of rotation of a DC series motor can be changed by ?
Answers: interchanging field terminals
- field flux only
- both (a) and (b)
- armature current only
- none of the above
Question 5: The armature torque of the DC shunt motor is proportional to?
Answers: armature current only
- Cumulative compound motor
- Differentially compound motor
- Shunt motor
- Series motor
Answers: Series motor
- Mechanical loss
- All of the above
- Core loss
- Copper loss
Question 7: Which of the following loss in a DC generator is dissipated in the form of heat?
Answers: All of the above
- the motor will not work and come to stop
- the motor will work as series motor and run at high speed in the same direction
- the motor will first stop and then run in opposite direction as series motor
- the motor will work as series motor and run at slow speed in the same direction
Question 8: ln a differentially compounded DC motor, if shunt field suddenly opens?
Answers: the motor will first stop and then run in opposite direction as series motor
- the torque required
- none of the above
- The voltage across the terminals
- the speed of the motor
Question 9: The current drawn by the armature of DC motor is directly proportional to?
Answers: the torque required
- high starting torque
- frequent on-off cycles
- variable speed
- low starting torque
Question 10: Differentially compound dc motors can find application is requiring?
Answers: low starting torque
Report Card
Total Questions Attempted: 0
Correct: 0 Wrong: 0
--
Advertisements
Related Articles
DC Motor MCQ
DC Motors Most Important Interview Questions and Answers. Viva Questions DC motors important question and...
DC Motor MCQ
Electrical Motors Interview Question And Answers · What are the causes of hot bearings? · What causes the...
DC Motor MCQ
DC Motor Questions · 1. What will happen if the DC shunt motor is linked across the AC supply? What is the...