MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Dc Machines knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
BLDC can be used instead ____________ |
| A. | Synchronous motor |
| B. | Normal brushed DC motor |
| C. | Induction motor |
| D. | Air motor |
| Answer» C. Induction motor | |
| 2. |
Typical brushless motor doesn’t have ______________ |
| A. | Commutator |
| B. | Permanent magnet |
| C. | Electronic controller |
| D. | Fixed armature |
| Answer» B. Permanent magnet | |
| 3. |
BLDC can be used instead ___________? |
| A. | Synchronous motor |
| B. | Normal brushed DC motor |
| C. | Induction motor |
| D. | Air motor |
| Answer» C. Induction motor | |
| 4. |
Typical brushless motor doesn’t have ______________$ |
| A. | Commutator |
| B. | Permanent magnet |
| C. | Electronic controller |
| D. | Fixed armature |
| Answer» B. Permanent magnet | |
| 5. |
Construction of BLDC is exactly similar to the ______________ |
| A. | Conventional DC motor |
| B. | Induction motor |
| C. | Permanent magnet synchronous motor |
| D. | Totally different construction |
| Answer» D. Totally different construction | |
| 6. |
In medical fields which DC motor is widely used? |
| A. | PMDC |
| B. | BLDC |
| C. | Brushed DC motor |
| D. | Cannot be determined |
| Answer» C. Brushed DC motor | |
| 7. |
In BLDC motor driver module, we do not require ______________ |
| A. | SCRs |
| B. | Power transistors |
| C. | FETs |
| D. | Transistors |
| Answer» E. | |
| 8. |
Which of the following is not an advantage of BLDC motor over conventional DC motor. |
| A. | Less maintenance |
| B. | Long life |
| C. | No risk of explosion or possibility of RF radiation |
| D. | Low cost |
| Answer» E. | |
| 9. |
By electronic circuitry BLDC can be controlled for both constant and variable torque operation. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 10. |
In BLDC motor field winding is kept on _______________ |
| A. | Stator |
| B. | Rotor |
| C. | Can be placed anywhere |
| D. | Absent |
| Answer» C. Can be placed anywhere | |