MCQOPTIONS
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MCQOPTIONS
This section includes 13 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. |
What is the effect of frequency on the torque of a moving system? |
| A. | torque is half of the frequency |
| B. | torque is twice the frequency |
| C. | torque is thrice the frequency |
| D. | torque is four times the frequency |
| Answer» C. torque is thrice the frequency | |
| 2. |
Eddy currents are induced in solid metal parts within the thickness of the conductor. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 3. |
Current in a pressure coil of the Dynamometer type wattmeter ________ |
| A. | lags the applied voltage |
| B. | leads the applied voltage |
| C. | is in phase with the applied voltage |
| D. | there is a phase difference of 90 degrees |
| Answer» B. leads the applied voltage | |
| 4. |
Pressure coil of a wattmeter ________ |
| A. | has capacitance and inductance |
| B. | has inductance and resistance |
| C. | has resistance and capacitance |
| D. | has only inductance |
| Answer» B. has inductance and resistance | |
| 5. |
WHAT_IS_THE_EFFECT_OF_FREQUENCY_ON_THE_TORQUE_OF_A_MOVING_SYSTEM??$ |
| A. | torque is half of the frequency |
| B. | torque is twice the frequency |
| C. | torque is thrice the frequency |
| D. | torque is four times the frequency |
| Answer» C. torque is thrice the frequency | |
| 6. |
Eddy currents are induced in solid metal parts within the thickness of the conductor? |
| A. | True |
| B. | False |
| Answer» B. False | |
| 7. |
Wattmeters are compensated for errors due to inductance by _________ |
| A. | using a series capacitor |
| B. | using a parallel capacitor |
| C. | using a series resistance |
| D. | using a parallel resistance |
| Answer» C. using a series resistance | |
| 8. |
Current in a pressure coil of the Dynamometer type wattmeter |
| A. | lags the applied voltage |
| B. | leads the applied voltage |
| C. | is in phase with the applied voltage |
| D. | there is a phase difference of 90 degrees |
| Answer» B. leads the applied voltage | |
| 9. |
Wattmeter reading has errors induced by _________ |
| A. | resistance |
| B. | self-capacitance |
| C. | self-inductance |
| D. | mutual inductance |
| Answer» E. | |
| 10. |
Dynamometer type wattmeter has _________ |
| A. | strong magnetic field |
| B. | intermediate magnetic field |
| C. | weak magnetic field |
| D. | no magnetic field |
| Answer» D. no magnetic field | |
| 11. |
Wattmeter reading is not affected by temperature. |
| A. | True |
| B. | False |
| Answer» C. | |
| 12. |
What is the effect of capacitance on wattmeter reading? |
| A. | aiding the inductance |
| B. | opposite to that of inductance |
| C. | aiding the capacitance |
| D. | opposite to that of resistance |
| Answer» C. aiding the capacitance | |
| 13. |
Pressure coil of a wattmeter |
| A. | has capacitance and inductance |
| B. | has inductance and resistance |
| C. | has resistance and capacitance |
| D. | has only inductance |
| Answer» B. has inductance and resistance | |