B. thermocouple instrument
C. electrostatic instrument
D. electrodynamic instrument
A. voltmeter
C. flux-meter
D. ballistic galvanometer
A. accuracy and reproducibility
C. static error
D. drift and dead zone
A. none of the above
C. square law
D. uniform law
A. variable turns of coil
B. any of the above
C. multicoii arrangement
E. multi range meters inside the measurement system
B. electrostatic type
C. multilayer parallel plate type
D. spherical type
A. Crompton potentiometer
B. D.C. potentiometer
C. A.C. co-ordinate potentiometer
B. by making control springs of large moment of inertia
C. by using a low resistance shunt
D. by using a high series resistance
B. dynamic deviation
C. static sensitivity
D. precision or accuracy
A. Wh
C. kW
D. None of the above
E. VAR
A. either A. or B.
B. neither A. nor B.
D. very heavy
A. A braking device
B. An operating torque system
C. Revolution registering device
B. fluid friction
C. all of the above
D. spring
B. moving iron instrument
C. none of the above
D. moving coil instrument
A. three-phase winding
C. single-phase winding
D. any of the above
A. out of phase by 30
C. out of phase by 180
D. out of phase by 0
E. out of phase by 60
A. indicating
B. integrating
E. recording
A. deflecting and damping
B. vibration and balancing
D. deflecting and control
A. potential transformers
B. current transformers
D. power transformers
A. wattmeters
B. ammeters
D. voltmeters
E. all of the above
A. any of the above
C. AC. generator
D. battery
A. Maxwell bridge configuration for measurement of inductance and De Santas bridge for measurement of capacitance
B. Any of the above
D. Maxwell Wein bridge for measurement of inductance and Wein bridge for measurement of capacitance
B. D.C. only
C. A.C. only
B. necessary to use a volt ratio box in conjunction with the potentiometer
C. necessary to standardise the potentiometer
D. none of the above
B. fixed coils
D. incoming alternator
B. 0.1 Hz
C. 1.5 Hz
D. 0.25 Hz
A. the bridge can be balanced if the resistances have some specific values
C. the bridge can always be balanced
A. in parallel with pressure coil
B. in series with current coil
D. in parallel with current coil
B. 90
C. 60
D. 0
A. bring energy meter to stand still
B. safe guard it against creep
D. brake the instrument
A. braking torque
D. creep compensation
B. all of the above
C. gravity
D. eddy currents
A. The viscosity of the oil should not change with the temperature
B. Should be non-evaporating
C. Must be a good insulator
D. Should not have corrosive action upon the metal of the vane
C. controlling
D. deflecting
A. large value of current
B. none of the above
D. large value of voltage
E. large value of power
A. 30 A
B. 10:00 AM
D. 60 A
A. either of the above
B. potential transformers
C. power transformers
A. eddy current
C. spring
D. gravity
A. 1.5 Hz
B. 0.25 Hz
C. 0.1 Hz
A. all of the above
B. wave shape error
D. temperature error
A. switch board
B. portable
D. moving coil
E. moving iron
F. both D. and E.
A. moving iron instrument
A. one current circuit and one pressure circuit
C. two current circuits and one pressure circuit
A. the same dimension but different number of turns
D. the same number of turns but different dimensions
A. one voltmeter and one ammeter
C. any of the above
D. one voltmeter, one ammeter and one energy meter
B. improve its ventilation
C. increase its deflecting torque
D. increase its braking torque
A. observational errors
B. instrumental errors
D. environmental errors
B. increase the resistance of ammeter
C. increase the sensitivity of the ammeter
A. from a battery
C. from a source which is not the same as the unknown voltage
A. Wagner earthing device
D. wave filters
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