MCQOPTIONS
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MCQOPTIONS
This section includes 9 Mcqs, each offering curated multiple-choice questions to sharpen your Instrumentation Transducers knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
What is the relation for phase angle (in degree) of a signal with time delay t and frequency f? |
| A. | 3600 f. t |
| B. | 1800 f t |
| C. | 3600 (f t) |
| D. | 1800 (f t) |
| Answer» B. 1800 f t | |
| 2. |
Which of the following is the expression of power factor? |
| A. | cos |
| B. | sin |
| C. | tan |
| D. | sec |
| Answer» B. sin | |
| 3. |
Which of the following relation is correct for phase angle and reactive power? |
| A. | Reactive power = apparent power sin |
| B. | Reactive power = apparent power sin |
| C. | Reactive power = Real power sin |
| D. | Reactive power = Real power sin |
| Answer» B. Reactive power = apparent power sin | |
| 4. |
For what purpose, FET s are included in phase sensitive detectors? |
| A. | As SPDT switches, for working with very high frequency signals |
| B. | As SPDT switches, for working with very low frequency signals |
| C. | As SPST switches, for working with very high frequency signals |
| D. | As SPST switches, for working with very low frequency signals |
| Answer» C. As SPST switches, for working with very high frequency signals | |
| 5. |
Rejection capability of Phase sensitive detector is depended on the averaging time of smoothing filter. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 6. |
Phase-Sensitive detectors are used for measuring phase of ______________ |
| A. | Sinusoidal signals only |
| B. | Non periodic signals only |
| C. | Periodic signals only |
| D. | Both periodic and non-periodic signals |
| Answer» D. Both periodic and non-periodic signals | |
| 7. |
What is the use of flip-flop in electronic phase meters? |
| A. | To provide a delay |
| B. | To provide stability |
| C. | To save data for particular time duration |
| D. | To produce rectangular pulse |
| Answer» E. | |
| 8. |
What is the operating range of X-Y plotter? |
| A. | Below 5Hz |
| B. | Above 10Hz |
| C. | Above 1 KHz |
| D. | Very high frequency |
| Answer» B. Above 10Hz | |
| 9. |
Phase difference between two voltages at frequencies above 10Hz can be measured using _________ |
| A. | CRO |
| B. | Voltmeter |
| C. | X-Y plotter |
| D. | Multi meter |
| Answer» B. Voltmeter | |