A. bus-bars
B. incoming alternator
C. fixed coils
D. any of the above
Related Mcqs:
- In a Weston synchronoscope, the fixed coils are connected across_______________?
A. bus-bars
B. incoming alternator
C. a lamp
D. none of the above - A Weston synchronoscope is a________________?
A. moving coil instrument
B. moving iron instrument
C. dynamometer instrument
D. none 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 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 - 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 - In a Weston frequency meter, the magnetic axes of the two fixed coils are__________________?
A. parallel
B. perpendicular
C. inclined at 60°
D. inclined at 120° - A Weston frequency meter is_____________?
A. moving coil instrument
B. moving iron instrument
C. dynamometer instrument
D. none of the above - E.m.f. of a Weston cell is accurately measured by________________?
A. electrostatic voltmeter
B. hot wire voltmeter
C. isothermal voltmeter
D. electrodynamic voltmeter - 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
