A. almost zero
B. low
C. high
D. none of the above
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Related Mcqs:
- A dynamometer wattmeter can be used for______________?
- A. both D.C. and A.C. B. D.C. only C. A.C. only D. any of the above...
- The pressure coil of a wattmeter should be connected on the supply side of the current coil when______________?
- A. load impedance is high B. load impedance is low C. supply voltage is low D. none 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...
- In a dynamometer 3-phase power factor meter, the planes of the two moving coils are at_____________?
- A. 0° B. 60° C. 90° D. 120°...
- In a low power factor wattmeter the compensating coil is connected_______________?
- A. in series with current coil B. in parallel with current coil C. in series with pressure coil D. in parallel with pressure coil...
- In a low power factor wattmeter the pressure coil is connected_______________?
- A. to the supply side of the current coil B. to the load side of the current coil C. in any of the two meters at connection D. none of the above...
- A moving-coil permanent-magnet instrument can be used as ____________by using a low resistance shunt?
- A. ammeter B. voltmeter C. flux-meter D. ballistic galvanometer...
- A moving-coil permanent-magnet instrument can be used as flux-meter_____________?
- A. by using a low resistance shunt B. by using a high series resistance C. by eliminating the control springs D. by making control springs of large moment of inertia...
- In Weston synchronoscope the moving coil is connected across______________?
- A. bus-bars B. incoming alternator C. fixed coils D. any of the above...
- Wattmeter cannot be designed on the principle of_________________?
- A. electrostatic instrument B. thermocouple instrument C. moving iron instrument D. electrodynamic instrument...
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