Q. Schering bridge operates at a high voltage of about 10 kV.

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Q. Which of these instrument does not have a control spring?

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Q. In Weston frequency meter, the magnetic axes of the two fixed coils are

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Q. Which one of the following is true?

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Q. A single phase energy meter operates on induction principle.

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Q. The accuracy of measurement using CRO is about

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Q. The channel required for FM telemetry is

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Q. Assertion (A): Absolute instruments are used in standard laboratories.

Reason (R): Absolute instruments do not require calibration.

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Q. Assertion (A): A 3 phase wattmeter consists of two wattmeters mounted in one case.

Reason (R): Power measurement in a 3 phase circuit can be conveniently done by two wattmeter method.

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Q. A digital voltmeter can count from 0 to 9999. If full scale reading is 9.999 V, the resolution of full scale reading is

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Q. The most serious problems in ac bridge measurement is

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Q. Assertion (A): An electrostatic voltmeter is free from hysteresis and eddy current errors.

Reason (R): An electrostatic voltmeter has a number of fixed and moving vanes in parallel.

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Q. The pointer of an indicating instrument should be

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Q. The resistance of resistance strain gauge is about

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Q. Which bridge can be used to measure frequency?

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Q. The time base generator in a CRO gives an output which is

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Q. An average responding rectifier type electronic voltmeter has its scale calibrated in terms of rms value of sine wave. If 100 V peak value square wave is fed to this voltmeter, the reading will be

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Q. In low power factor wattmeter, the compensating coil is connected

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Q. The difference between measured value and true value is called

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Q. In air friction damping

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