MCQOPTIONS
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MCQOPTIONS
This section includes 12 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. |
Maximum sensitivity occurs when? |
| A. | R3 ⁄ R4 = 1 |
| B. | R2 ⁄ R4 = 1 |
| C. | R1 ⁄ R2 = 1 |
| D. | R3 ⁄ R2 = 1 |
| Answer» B. R2 ⁄ R4 = 1 | |
| 2. |
Bridge sensitivity is defined as _________ |
| A. | \(S_B=\frac{\theta}{R}\) |
| B. | \(S_B=\frac{\theta}{\Delta R}\) |
| C. | \(S_B=\frac{1}{\frac{\Delta R}{R}}\) |
| D. | \(S_B=\frac{\theta}{\frac{\Delta R}{R}}\) |
| Answer» E. | |
| 3. |
Sensitivity is expressed in _________ |
| A. | cm/A |
| B. | m/mA |
| C. | mm/µA |
| D. | inch/nA |
| Answer» D. inch/nA | |
| 4. |
When the bridge is balanced, what is the current flowing through the galvanometer? |
| A. | 0 |
| B. | depends on the ratio arms R1 and R2 |
| C. | varies by a factor of 2 |
| D. | depends on the type of null detector used |
| Answer» B. depends on the ratio arms R1 and R2 | |
| 5. |
MAXIMUM_SENSITIVITY_OCCURS_WHEN?$ |
| A. | <sup>R<sub>3</sub></sup> ‚ÅÑ <sub>R<sub>4</sub></sub> = 1 |
| B. | <sup>R<sub>2</sub></sup> ‚ÅÑ <sub>R<sub>4</sub></sub> = 1 |
| C. | <sup>R<sub>1</sub></sup> ‚ÅÑ <sub>R<sub>2</sub></sub> = 1 |
| D. | <sup>R<sub>3</sub></sup> ‚ÅÑ <sub>R<sub>2</sub></sub> = 1 |
| Answer» B. <sup>R<sub>2</sub></sup> ‚Äö√Ñ√∂‚àö√ñ‚àö√´ <sub>R<sub>4</sub></sub> = 1 | |
| 6. |
Unit of voltage sensitivity is _________ |
| A. | volts per degrees |
| B. | amps per ohms |
| C. | degrees per volts |
| D. | watts per amps |
| Answer» D. watts per amps | |
| 7. |
The voltage sensitivity of a galvanometer is given by _________ |
| A. | S<sub>v</sub> = <sup>e</sup>⁄<sub>θ</sub> |
| B. | S<sub>v</sub> = <sup>θ</sup>⁄<sub>e</sub> |
| C. | S<sub>v</sub> = <sup>1</sup>‚ÅÑ<sub>e</sub> |
| D. | S<sub>v</sub> = <sup>1</sup>⁄<sub>θ</sub> |
| Answer» C. S<sub>v</sub> = <sup>1</sup>‚Äö√Ñ√∂‚àö√ñ‚àö√´<sub>e</sub> | |
| 8. |
What is the relation between the sensitivity and deflection for a galvanometer? |
| A. | directly proportional |
| B. | inversely proportional |
| C. | independant of each other |
| D. | depends on the type of galvanometer used |
| Answer» B. inversely proportional | |
| 9. |
Sensitivity is expressed in |
| A. | cm/A |
| B. | m/mA |
| C. | mm/µA |
| D. | inch/nA |
| Answer» D. inch/nA | |
| 10. |
Sensitivity is defined as _________ |
| A. | amount of voltage per unit current |
| B. | amount of power per unit voltage |
| C. | amount of resistance per unit voltage |
| D. | amount of deflection per unit current |
| Answer» E. | |
| 11. |
Amount of deflection of the galvanometer depends on _________ |
| A. | resistance of the ratio arms |
| B. | sensitivity |
| C. | current flowing through the bridge |
| D. | emf across the circuit |
| Answer» C. current flowing through the bridge | |
| 12. |
When bridge is balanced, what is the current flowing through the galvanometer? |
| A. | 0 |
| B. | depends on the ratio arms R<sub>1</sub> and R<sub>2</sub> |
| C. | varies by a factor of 2 |
| D. | depends on the type of null detector used |
| Answer» B. depends on the ratio arms R<sub>1</sub> and R<sub>2</sub> | |