A. D.C. potentiometer
B. Drysdale potentiometer
C. A.C. co-ordinate potentiometer
D. Crompton potentiometer
Related Mcqs:
- The stator of phase shifting transformer for use in conjunction with an A.C. potentiometer usually has a _________________?
A. single-phase winding
B. two-phase winding
C. three-phase winding
D. any of the above - For handling greater currents induction wattmeters are used in conjunction with______________?
A. potential transformers
B. current transformers
C. power transformers
D. either of the above
E. 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° - An instrument transformer is used to extend the range of______________?
A. induction instrument
B. electrostatic instrument
C. moving coil instrument
D. any of the above - Induction type single phase energy meters measure electric energy in_______________?
A. kW
B. Wh
C. kWh
D. VAR
E. None of the above - 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 - 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 - 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 - 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° - The power of a n-phase circuit can be measured by using a minimum of_______________?
A. (n – 1) wattmeter elements
B. n wattmeter elements
C. (n + 1) wattmeter elements
D. 2n wattmeter elements