The pressure coil of a wattmeter should be connected on the supply side of the current coil when______________?

Related Mcqs:

1. 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...

2. 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...

3. 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...

4. 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...

5. In Weston synchronoscope the moving coil is connected across______________?

   A. bus-bars B. incoming alternator C. fixed coils D. any of the above...

6. 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...

7. 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...

8. 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...

9. Wattmeter cannot be designed on the principle of_________________?

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

10. 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...