A. 6 V
B. 12 V
C. 40 V
D. 100 V
Related Mcqs:
- The electrical power to a meggar is provided by________________?
A. battery
B. permanent magnet D.C. generator
C. AC. generator
D. any of the above - In a meggar controlling torque is provided by______________?
A. spring
B. gravity
C. coil
D. eddy current - 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 - A voltage of about 200 V can be measured__________________?
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 - 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 - Operating torques in analogue instruments are_______________?
A. deflecting and control
B. deflecting and damping
C. deflecting, control and damping
D. vibration and balancing - is an instrument which measures the insulation resistance of an electric circuit relative to earth and one another_______________?
A. Tangent galvanometer
B. Meggar
C. Current transformer
D. None of the above - The resistance in the circuit of the moving coil of a dynamometer wattmeter should be_____________?
A. almost zero
B. low
C. high
D. none of the above
