A. as long as possible
B. as short as possible
C. neither too small not too large
D. very thick
Related Mcqs:
- 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 - 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° - 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 - 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 - 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 - 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 - 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 - 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 - 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 - 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
