A. safe guard it against creep
B. brake the instrument
C. bring energy meter to stand still
D. maintain steady speed and equal to driving torque
Related Mcqs:
- The household energy meter is_______________?
A. an indicating instrument
B. a recording instrument
C. an integrating instrument
D. none of the above - The adjustment of position of shading bands, in an energy meter is done to provide______________?
A. friction compensation
B. creep compensation
C. braking torque
D. none of the above - Two holes in the disc of energy meter are drilled at the opposite sides of the spindle to_____________?
A. improve its ventilation
B. eliminate creeping at no load
C. increase its deflecting torque
D. increase its braking torque - Various adjustments in an energy meter include_______________?
A. light load or friction
B. lag and creep
C. overload and voltage compensation
D. temperature compensation
E. all of the above - In a portable instrument, the controlling torque is provided by_____________?
A. spring
B. gravity
C. eddy currents
D. all of the above - In a meggar controlling torque is provided by______________?
A. spring
B. gravity
C. coil
D. eddy current - Induction type single phase energy meters measure electric energy in_______________?
A. kW
B. Wh
C. kWh
D. VAR
E. None of the above - Which of the following is an essential part of a motor meter ?
A. An operating torque system
B. A braking device
C. Revolution registering device
D. All of the above - The two pressure coils of a single phase power factor meter have_________________?
A. the same dimensions and the same number of turns
B. the same dimension but different number of turns
C. the same number of turns but different dimensions
D. none of the above - In a vibrating reed frequency meter the natural frequencies of two adjacent reeds have a difference of_________________?
A. 0.1 Hz
B. 0.25 Hz
C. 0.5 Hz
D. 1.5 Hz
