A. unity
B. 0.8 lagging
C. 0.8 leading
D. zero
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Related Mcqs:
- 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 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...
- In a single phase power factor meter the phase difference between the currents in the two pressure coils is___________________?
- A. exactly 0° B. approximately 0° C. exactly 90° D. approximately 90°...
- The power factor of a single phase load can be calculated if the instruments available are_____________?
- A. one voltmeter and one ammeter B. one voltmeter, one ammeter and one wattmeter C. one voltmeter, one ammeter and one energy meter 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...
- 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...
- An induction 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 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...
- 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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