A. directly by a D.C. potentiometer
B. a D.C. potentiometer in conjunction with a volt ratio box
C. a D.C. potentiometer in conjunction with a known resistance
D. none of the above
Related Mcqs:
- Which of the following devices should be used for accurate measurement of low D.C. voltage ?
A. Small range moving coil voltmeter
B. D.C. potentiometer
C. Small range thermocouple voltmeter
D. None of the above - The operating voltage of a meggar is about_______________?
A. 6 V
B. 12 V
C. 40 V
D. 100 V - 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 - If the current in a capacitor leads the voltage by 80°, the loss angle of the capacitor is_________________?
A. 10°
B. 80°
C. 120°
D. 170° - 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 - Most common form of A.C. meters met with in every day domestic and industrial installations are______________?
A. mercury motor meters
B. commutator motor meters
C. induction type single phase energy meters
D. all of the above - The household energy meter is_______________?
A. an indicating instrument
B. a recording instrument
C. an integrating instrument
D. none of the above - 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 - 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° - The gravity controlled instrument has crowded scale because current is proportional to________________?
A. balancing weight
B. deflection angle
C. sine of deflection angle
