MCQOPTIONS
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MCQOPTIONS
This section includes 110 Mcqs, each offering curated multiple-choice questions to sharpen your Electrical Engineering Questions knowledge and support exam preparation. Choose a topic below to get started.
| 101. |
Which of the following single-phase motors has relatively poor starting torque ? |
| A. | Universal motor |
| B. | Repulsion motor |
| C. | Capacitor motor |
| D. | All single phase motors have zero starting torque |
| Answer» D. All single phase motors have zero starting torque | |
| 102. |
If a particular application needs high speed and high starting torque, then which of the following motor will be preferred ? |
| A. | Universal motor |
| B. | Shaded pole type motor |
| C. | Capacitor start motor |
| D. | Capacitor start and run motor |
| Answer» B. Shaded pole type motor | |
| 103. |
The electric motor used in portable drills is__________? |
| A. | capacitor run motor |
| B. | hysteresis motor |
| C. | universal motor |
| D. | repulsion motor |
| Answer» D. repulsion motor | |
| 104. |
In a capacitor start motor, the phase displacement between starting and running winding can be nearly__________? |
| A. | 10° |
| B. | 30° |
| C. | 60° |
| D. | 90° |
| Answer» E. | |
| 105. |
The speed of a universal motor is usually reduced by using____________? |
| A. | gearing |
| B. | belts |
| C. | brakes |
| D. | chains |
| Answer» B. belts | |
| 106. |
Burning out of winding is due to___________? |
| A. | short circuited capacitor |
| B. | capacitor value hiving changed |
| C. | open circuiting of capacitor |
| D. | none of the above |
| Answer» B. capacitor value hiving changed | |
| 107. |
In a hysteresis motor, the rotor must have____________? |
| A. | retentivity |
| B. | resistivity |
| C. | susceptibility |
| D. | none of the above |
| Answer» B. resistivity | |
| 108. |
Direction of rotation of a split phase motor can be reversed by reversing the connection of__________? |
| A. | running winding only |
| B. | starting winding only |
| C. | either A. or (b) |
| D. | both A. and (b) |
| Answer» D. both A. and (b) | |
| 109. |
Which of the following motors is inherently self starting ? |
| A. | Split motor |
| B. | Shaded-pole motor |
| C. | Reluctance motor |
| D. | None of these |
| Answer» C. Reluctance motor | |
| 110. |
Which of the following motor will give relatively high starting torque ___________? |
| A. | Capacitor start motor |
| B. | Capacitor run motor |
| C. | Split phase motor |
| D. | Shaded pole motor |
| Answer» B. Capacitor run motor | |