MCQOPTIONS
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MCQOPTIONS
This section includes 11 Mcqs, each offering curated multiple-choice questions to sharpen your Electrical Measurements knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
In some energy meters, creeping can be avoided by __________ |
| A. | attaching small gold pieces |
| B. | attaching small aluminium pieces |
| C. | attaching small iron pieces |
| D. | attaching small zinc pieces |
| Answer» D. attaching small zinc pieces | |
| 2. |
Creeping is avoided by __________ |
| A. | reversing the polarity of the voltage |
| B. | drilling two diametrically opposite holes |
| C. | holding the disc |
| D. | increasing the friction |
| Answer» C. holding the disc | |
| 3. |
IN_SOME_ENERGY_METERS,_CREEPING_CAN_BE_AVOIDED_BY___________?$ |
| A. | attaching small gold pieces |
| B. | attaching small aluminium pieces |
| C. | attaching small iron pieces |
| D. | attaching small zinc pieces |
| Answer» D. attaching small zinc pieces | |
| 4. |
Creeping is avoided by _________? |
| A. | reversing the polarity of the voltage |
| B. | drilling two diametrically opposite holes |
| C. | holding the disc |
| D. | increasing the friction |
| Answer» C. holding the disc | |
| 5. |
Disc rotates slowly in some energy meters. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 6. |
How can temperature effect be compensated in an energy meter? |
| A. | through heat sinks |
| B. | by a temperature shunt |
| C. | by using resistance |
| D. | by using a coolant |
| Answer» C. by using resistance | |
| 7. |
How is the flux of shunt coil related to voltage? |
| A. | flux is proportional to square of voltage |
| B. | directly proportional |
| C. | inversely proportional |
| D. | independent of each other |
| Answer» B. directly proportional | |
| 8. |
Supply voltage in an energy meter is __________ |
| A. | constant always |
| B. | zero always |
| C. | depends on the load |
| D. | can fluctuate |
| Answer» E. | |
| 9. |
Energy meter creeps __________ |
| A. | due to change in supply |
| B. | due to reversal in polarity of voltage |
| C. | due to asymmetry in magnetic circuit |
| D. | due to turns ratio of transformer |
| Answer» D. due to turns ratio of transformer | |
| 10. |
Phase angles in an energy meter cannot be incorrect. |
| A. | True |
| B. | False |
| Answer» C. | |
| 11. |
Magnitude of flux in an energy meter varies __________ |
| A. | due to abnormal currents and voltages |
| B. | due to high resistance and inductance values |
| C. | due to change in the transformer turns |
| D. | due to the induced e.m.f in the windings |
| Answer» B. due to high resistance and inductance values | |