MCQOPTIONS
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MCQOPTIONS
This section includes 109 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. |
A sinusoidal voltage of 5 Hz is applied to the field of a shunt generator. The armature voltage wave will_____________? |
| A. | will be zero |
| B. | will be of 5 Hz |
| C. | will be of 5 xiVHz |
| D. | will be of v Hz 5 |
| Answer» C. will be of 5 xiVHz | |
| 102. |
A shunt generator running at 1000 r.p.m. has generated e.m.f. as 200 V. If the speed increases to 1200 r.p.m., the generated e.m.f. will be nearly_______________? |
| A. | 150 V |
| B. | 175 V |
| C. | 240 V |
| D. | 290 V |
| Answer» D. 290 V | |
| 103. |
A shunt generator can self-excite:_________________? |
| A. | only if the resistance of the field circuit is less than critical value |
| B. | only if the resistance of the field circuit is greater than critical value |
| C. | irrespective of the value of the resistance in the field circuit |
| D. | none |
| Answer» B. only if the resistance of the field circuit is greater than critical value | |
| 104. |
A series generator can self-excite:______________? |
| A. | only if the load current is zero |
| B. | only if the load current is not zero |
| C. | irrespective of the value of load current |
| D. | none of the above |
| Answer» C. irrespective of the value of load current | |
| 105. |
A separately excited generator as compared to a self-excited generator_____________? |
| A. | is amenable to better voltage control |
| B. | is more stable |
| C. | has exciting current independent of load current |
| D. | has all above features |
| Answer» E. | |
| 106. |
A D.C. welding generator has____________? |
| A. | lap winding |
| B. | wave moving |
| C. | duplex winding |
| D. | any of the above |
| Answer» B. wave moving | |
| 107. |
A D.C. generator works on the principle of____________? |
| A. | Lenz’s law |
| B. | Ohm’s law |
| C. | Faraday’s law of electromagnetic induction |
| D. | none of the above |
| Answer» D. none of the above | |
| 108. |
A D.C. generator can be considered as____________? |
| A. | rectifier |
| B. | primemover |
| C. | rotating amplifier |
| D. | power pump |
| Answer» D. power pump | |
| 109. |
A cumulatively compounded long shunt generator when operating as a motor would be____________? |
| A. | cumulatively compounded long shunt |
| B. | deferentially compounded long shunt |
| C. | cumulatively compounded short shunt |
| D. | differentially compounded short shunt |
| Answer» C. cumulatively compounded short shunt | |