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.Management Sciences
Category: Measurement and Instrumentation
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
A potentiometer may be used for_________________?
A. measurement of resistance
B. measurement of current
C. calibration of ammeter
D. calibration of voltmeter
E. all of the above
The spring material used in a spring control device should have the following property?
A. Should be non-magnetic
B. Most be of low temperature co-efficient
C. Should have low specific resistance
D. Should not be subjected to fatigue
E. All of the above
The pointer of an indicating instrument should be______________?
A. very light
B. very heavy
C. either A. or B.
D. neither A. nor B.
The disc of an instrument using eddy current damping should be of________________?
A. conducting and magnetic material
B. non-conducting and magnetic material
C. conducting and non-magnetic material
D. none of the above
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
A multirangq instrument has________________?
A. multiple shunt or series resistances inside the meter
B. multicoii arrangement
C. variable turns of coil
D. multi range meters inside the measurement system
E. any of the above
According to application, instruments are classified as_____________?
A. switch board
B. portable
C. both A. and B.
D. moving coil
E. moving iron
F. both D. and E.
The function of shunt in an ammeter is to______________?
A. by pass the current
B. increase the sensitivity of the ammeter
C. increase the resistance of ammeter
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
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