The stator of phase shifting transformer for use in conjunction with an A.C. potentiometer usually has a _________________?

Related Mcqs:

1. A phase shifting transformer is used in conjunction with_______________?

   A. D.C. potentiometer B. Drysdale potentiometer C. A.C. co-ordinate potentiometer D. Crompton potentiometer...

2. In an AC. co-ordinate potentiometer, the currents in the phase and quadrature potentiometer are adjusted to be_____________?

   A. out of phase by 90° B. out of phase by 60° C. out of phase by 30° D. out of phase by 0° E. out of phase by 180°...

3. To measure an A. C. voltage by using an A.C. potentiometer, it is desirable that the supply for the potentiometer in taken_______________?

   A. from a source which is not the same as the unknown voltage B. from a battery C. from the same source as the unknown voltage D. any of the above...

4. A potentiometer may be used for_________________?

   A. measurement of resistance B. measurement of current C. calibration of ammeter D. calibration of voltmeter E. all of the above...

5. To measure a resistance with the help of a potentiometer it is_________________?

   A. necessary to standardise the potentiometer B. not necessary to standardise the potentiometer C. necessary to use a volt ratio box in conjunction with the potentiometer D. none of the above...

6. In order to achieve high accuracy, the slide wire of a potentiometer should be_______________?

   A. as long as possible B. as short as possible C. neither too small not too large D. very thick...

7. Basically a potentiometer is a device for________________?

   A. comparing two voltages B. measuring a current C. comparing two currents D. measuring a voltage E. none of the above...

8. For handling greater currents induction wattmeters are used in conjunction with______________?

   A. potential transformers B. current transformers C. power transformers D. either of the above E. none of the above...

9. In a single phase power factor meter the phase difference between the currents in the two pressure coils is___________________?

   A. exactly 0° B. approximately 0° C. exactly 90° D. approximately 90°...

10. An instrument transformer is used to extend the range of______________?

    A. induction instrument B. electrostatic instrument C. moving coil instrument D. any of the above...