MCQOPTIONS
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MCQOPTIONS
This section includes 14 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. |
Why can’t a Kelvin bridge be used for the measurement of low Quality factor value? |
| A. | due to thermoelectric effect |
| B. | due to balance problem |
| C. | due to the dull detector used |
| D. | due to temperature |
| Answer» C. due to the dull detector used | |
| 2. |
Kelvin bridge can be calibrated to read _________ |
| A. | inductance and Quality factor value |
| B. | capacitance only |
| C. | power and voltage |
| D. | current and frequency |
| Answer» B. capacitance only | |
| 3. |
The relation between ratio of resistance arms and ratio of resistance arms of second bridge is _________ |
| A. | unequal |
| B. | equal |
| C. | twice |
| D. | one forth |
| Answer» C. twice | |
| 4. |
What is the balance equation of Kelvin bridge? |
| A. | Rx = \(\frac{R_2 R_3}{R_1}\) |
| B. | Rx = \(\frac{R_1 R_2}{R_3}\) |
| C. | Rx = \(\frac{R_1}{R_2}\) |
| D. | Rx = \(\frac{R_1 R_3}{R_2}\) |
| Answer» E. | |
| 5. |
Kelvin’s bridge consists of _________ |
| A. | double bridge |
| B. | single bridge |
| C. | half bridge |
| D. | three fourth bridge |
| Answer» B. single bridge | |
| 6. |
WHY_CAN‚ÄÖ√Ñ√∂‚ÀÖ√Ë‚ÀÖ¬•T_A_KELVIN_BRIDGE_BE_USED_FOR_THE_MEASUREMENT_OF_LOW_QUALITY_FACTOR_VALUE??$# |
| A. | due to thermoelectric effect |
| B. | due to balance problem |
| C. | due to the dull detector used |
| D. | due to temperature |
| Answer» C. due to the dull detector used | |
| 7. |
KELVIN_BRIDGE_CAN_BE_CALIBRATED_TO_READ?$ |
| A. | inductance and Quality factor value |
| B. | capacitance only |
| C. | power and voltage |
| D. | current and frequency |
| Answer» B. capacitance only | |
| 8. |
What is the condition to achieve a high sensitivity in a Kelvin bridge? |
| A. | low voltage |
| B. | high power |
| C. | medium resistance |
| D. | high current |
| Answer» E. | |
| 9. |
Why Kelvin bridge is used for measurement of low resistance? |
| A. | due to e.m.f source used |
| B. | due to a large current flow |
| C. | due to contact and lead resistance |
| D. | due to power dissipation across the circuit |
| Answer» D. due to power dissipation across the circuit | |
| 10. |
The relation between ratio of resistance arms and ratio of resistance arms of second bridge is |
| A. | unequal |
| B. | equal |
| C. | twice |
| D. | one forth |
| Answer» C. twice | |
| 11. |
What is the effect of load and contact resistance in Kelvin bridge? |
| A. | independent |
| B. | fully dependent |
| C. | partially dependent |
| D. | depends on the resistance value |
| Answer» B. fully dependent | |
| 12. |
Accuracy of Kelvin bridge is of the order of _________ |
| A. | ±0.5 to ±2 % |
| B. | ±0.05 to ±0.02 % |
| C. | ±0.05 to ±0.2 % |
| D. | ±0.005 to ±0.02 % |
| Answer» D. ¬¨¬®¬¨¬±0.005 to ¬¨¬®¬¨¬±0.02 % | |
| 13. |
The range of resistance measured in a Kelvin bridge is _________ |
| A. | 10Ω to 10 mΩ |
| B. | 1Ω to 10 μΩ |
| C. | 0.01Ω to 10 MΩ |
| D. | 0.1Ω to 10 nΩ |
| Answer» C. 0.01‚âà√≠¬¨¬© to 10 M‚âà√≠¬¨¬© | |
| 14. |
Kelvin’s bridge consists of _________ |
| A. | double bridge |
| B. | single bridge |
| C. | half bridge |
| D. | three fourth bridge |
| Answer» B. single bridge | |