Electrical Engineering MCQ on Induction Motor
Contents
- 1 The term ‘cogging’ is linked with
- 2 In medium sized induction motors, the slip is usually around
- 3 Blocked rotor test on induction motors is carried out to find
- 4 A 3-phase induction motor delta connected is carrying too heavy load and one of its fuses blows out, the motor
- 5 Star-delta starting of motors can’t be achived in case of
The term ‘cogging’ is linked with
The term ‘cogging’ is linked with
- Compound generators
- D.C. series motors
- Induction motors
- Three-phase transformers
Correct answer: 3. Induction motors
In medium sized induction motors, the slip is usually around
In medium sized induction motors, the slip is usually around
- 0.0004
- 0.004
- 0.04
- 0.14
Correct answer: 3. 0.04
Blocked rotor test on induction motors is carried out to find
Blocked rotor test on induction motors is carried out to find
- Leakage reactance
- Power factor on short circuit
- Short-circuit current under rated voltage
- All of these
Correct answer: 4. All of these
A 3-phase induction motor delta connected is carrying too heavy load and one of its fuses blows out, the motor
A 3-phase induction motor delta connected is carrying too heavy load and one of its fuses blows out, the motor
- Will continue running burning its one phase
- Will continue running burning its two phase
- Will continue running without any harm to the winding
- Will stop and carry heavy current causing permanent damage to its winding
Correct answer: 4. Will stop and carry heavy current causing permanent damage to its winding
Star-delta starting of motors can’t be achived in case of
Star-delta starting of motors can’t be achived in case of
- High speed motors
- Low horse power motors
- Single phase motors
- Variable speed motors
Correct answer: 3. Single phase motors