MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 16 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. |
A Schering bridge can be used for the ______________ |
| A. | measuring voltages |
| B. | measuring currents |
| C. | testing capacitors |
| D. | protecting the circuit from temperature rises |
| Answer» D. protecting the circuit from temperature rises | |
| 2. |
Commercial Schering bridge can be used for the measurement of capacitances from _____________ |
| A. | 10pF to 0.1nF |
| B. | 100pF to 1μF |
| C. | 50nF to 10mF |
| D. | 25mF to 5F |
| Answer» C. 50nF to 10mF | |
| 3. |
Dissipation factor is the reciprocal of quality factor. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 4. |
Quality factor is given by which of the following expression? |
| A. | Q = 1⁄R |
| B. | Q = R |
| C. | Q = X⁄R |
| D. | Q = XR |
| Answer» D. Q = XR | |
| 5. |
For a series RC circuit, what is δ? |
| A. | voltage between series RC combination and C |
| B. | voltage between series RC combination |
| C. | voltage across C |
| D. | voltage across R |
| Answer» B. voltage between series RC combination | |
| 6. |
For phase angles close to 90°, the power factor of the bridge is _________ |
| A. | p.f. = ωRx |
| B. | p.f. = ωCx |
| C. | p.f. = Rx Cx |
| D. | p.f. = ωRx Cx |
| Answer» E. | |
| 7. |
COMMERCIAL_SCHERING_BRIDGE_CAN_BE_USED_FOR_THE_MEASUREMENT_OF_CAPACITANCES?$ |
| A. | from 10pF to 0.1nF |
| B. | from 100pF to 1μF |
| C. | from 50nF to 10mF |
| D. | from 25mF to 5F |
| Answer» C. from 50nF to 10mF | |
| 8. |
A_Schering_bridge_can_be_used_for_the$ |
| A. | measuring voltages |
| B. | measuring currents |
| C. | testing capacitors |
| D. | protecting the circuit from temperature rises |
| Answer» D. protecting the circuit from temperature rises | |
| 9. |
Dissipation factor is the reciprocal of quality factor? |
| A. | True |
| B. | False |
| Answer» B. False | |
| 10. |
Quality factor is given by the expression |
| A. | Q = <sup>1</sup>‚ÅÑ<sub>R</sub> |
| B. | Q = R |
| C. | Q = <sup>X</sup>‚ÅÑ<sub>R</sub> |
| D. | Q = XR |
| Answer» D. Q = XR | |
| 11. |
What is the expression for the loss angle? |
| A. | tan⁡ δ = ωR<sub>4</sub> |
| B. | tan⁡ δ = ωR<sub>4</sub> C<sub>4</sub> |
| C. | tan⁡ δ = ωC<sub>4</sub> |
| D. | tan⁡ δ = R<sub>4</sub> C<sub>4</sub> |
| Answer» C. tan‚Äö√Ñ√∂‚àö√ñ¬¨‚àû ‚âà√≠¬¨‚Ä¢ = ‚âà√¨‚àö¬¢C<sub>4</sub> | |
| 12. |
For a series RC circuit, what is δ?$ |
| A. | voltage between series RC combination and C |
| B. | voltage between series RC combination |
| C. | voltage across C |
| D. | voltage across R |
| Answer» B. voltage between series RC combination | |
| 13. |
For phase angles close to 90°, the power factor of the bridge is _________$ |
| A. | p.f. = ωR<sub>x</sub> |
| B. | p.f. = ωC<sub>x</sub> |
| C. | p.f. = R<sub>x</sub> C<sub>x</sub> |
| D. | p.f. = ωR<sub>x</sub> C<sub>x</sub> |
| Answer» E. | |
| 14. |
Power factor of a Schering bridge is _________ |
| A. | p.f. = sin‚àÖ<sub>x</sub> = <sup>Z<sub>x</sub></sup>‚ÅÑ<sub>R<sub>x</sub> </sub> |
| B. | p.f. = cot‚àÖ<sub>x</sub> = <sup>R<sub>x</sub></sup>‚ÅÑ<sub>Z<sub>x</sub> </sub> |
| C. | p.f. = cos‚àÖ<sub>x</sub> = <sup>R<sub>x</sub></sup>‚ÅÑ<sub>Z<sub>x</sub> </sub> |
| D. | p.f. = tan‚àÖ<sub>x</sub> = <sup>R<sub>x</sub></sup>‚ÅÑ<sub>Z<sub>x</sub> </sub> |
| Answer» D. p.f. = tan‚Äö√Ñ√∂‚àö‚Ć‚àö√±<sub>x</sub> = <sup>R<sub>x</sub></sup>‚Äö√Ñ√∂‚àö√ñ‚àö√´<sub>Z<sub>x</sub> </sub> | |
| 15. |
Schering bridge is used for _________ |
| A. | low voltages only |
| B. | low and high voltages |
| C. | high voltages only |
| D. | intermediate voltages only |
| Answer» C. high voltages only | |
| 16. |
Schering bridge is one of the most widely used AC bridges. |
| A. | True |
| B. | False |
| Answer» B. False | |