MCQOPTIONS
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MCQOPTIONS
This section includes 14 Mcqs, each offering curated multiple-choice questions to sharpen your Electric Drives knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The ratio of the rotor gross power and air gap power is _______ |
| A. | s |
| B. | 1-s |
| C. | 1+s |
| D. | 0 |
| Answer» C. 1+s | |
| 2. |
The unbalanced set of 3-phase voltages causes ________ |
| A. | Positive sequence current |
| B. | Negative sequence current |
| C. | Zero sequence current |
| D. | Half sequence current |
| Answer» C. Zero sequence current | |
| 3. |
The slots used in the Synchronous machines are ___________ |
| A. | Closed |
| B. | Semi-open |
| C. | Vacuum |
| D. | Open |
| Answer» E. | |
| 4. |
The slots used in the Induction motor are ___________ |
| A. | Semi-closed |
| B. | Closed |
| C. | Vacuum |
| D. | Open |
| Answer» B. Closed | |
| 5. |
Which type of Induction motor is best for e.m.f injection method? |
| A. | SCIM |
| B. | WRIM |
| C. | Single-phase IM |
| D. | Linear IM |
| Answer» C. Single-phase IM | |
| 6. |
The concept of the slip is used in ___________ |
| A. | Synchronous machine |
| B. | Induction machine |
| C. | DC machine |
| D. | Transformer |
| Answer» C. DC machine | |
| 7. |
The use of the capacitor banks in the 3-phase Induction motor is ________ |
| A. | To increase the power factor |
| B. | To decrease the speed |
| C. | To increase the speed |
| D. | To decrease the power factor |
| Answer» B. To decrease the speed | |
| 8. |
_________ motor operates at high power factor. |
| A. | Capacitor start |
| B. | Capacitor run |
| C. | Shaded pole |
| D. | Reluctance |
| Answer» C. Shaded pole | |
| 9. |
Which type of Induction motor is best for pole changing method? |
| A. | SCIM |
| B. | WRIM |
| C. | Single-phase IM |
| D. | Linear IM |
| Answer» B. WRIM | |
| 10. |
Induction motor is analogous to __________ |
| A. | Transformer |
| B. | DC machine |
| C. | Synchronous motor |
| D. | Synchronous generator |
| Answer» B. DC machine | |
| 11. |
Which starting method is the best method in Induction motor? |
| A. | Direct online starting |
| B. | Autotransformer starting |
| C. | Reactance starting |
| D. | Star-Delta starting |
| Answer» E. | |
| 12. |
Choose the Induction motor with peak speed. |
| A. | 10 Pole |
| B. | 12 Pole |
| C. | 14 Pole |
| D. | 16 Pole |
| Answer» B. 12 Pole | |
| 13. |
In Induction motor rotor laminations are thicker than stator laminations. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 14. |
Order of the circuit is the number of memory elements present in the circuit. |
| A. | True |
| B. | False |
| Answer» B. False | |