A dynamometer wattmeter can be used for______________?

Related Mcqs:

1. 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...

2. 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...

3. 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°...

4. In a 3-phase power measurement by two wattmeter method, both the watt meters had identical readings. The power factor of the load was___________?

   A. unity B. 0.8 lagging C. 0.8 leading D. zero...

5. 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...

6. 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...

7. 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...

8. 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...

9. Wattmeter cannot be designed on the principle of_________________?

   A. electrostatic instrument B. thermocouple instrument C. moving iron instrument D. electrodynamic instrument...

10. 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...