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

Related Mcqs:

1. 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...

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. 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...

4. 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...

5. 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...

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

   A. single-phase winding B. two-phase winding C. three-phase winding D. any of the above...

7. In a 3-phase power measurement by two wattmeter method the reading of one of the wattmeter was zero. The power factor of the load must be_______________?

   A. unity B. 0.5 C. 0.3 D. zero...

8. For measuring a very high resistance we should use_______________?

   A. Kelvin’s double bridge B. Wheat stone bridge C. Meggar D. None of the above...

9. For measurement of inductance having high value, we should use______________?

   A. Maxwell’s bridge B. Maxwell Wein bridge C. Hay’s bridge D. Any of the above...

10. For measurements on high voltage capacitors, the suitable bridge is_______________?

    A. Wein bridge B. Modified De Santy’s bridge C. Schering bridge D. Any of the above E. None of the above...