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Measurement and Instrumentation

Measurement and Instrumentation
Relative permittivity can be measured by _______ bridge

 Desautys.
 Hays.
 Schering.
 Wheatstones.

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Measurement and Instrumentation
A high frequency AC signal is applied to a PMMC instrument. The RMS value of the AC signal is 2V, the reading of the instrument is

 Zero.
 2√2V.
 2V.
 √2V.

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Measurement and Instrumentation
Purely mechanical instrument cannot be used for dynamic measurements because they have

All of these
 higher response time.
 high inertia.
 large time constant.

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Measurement and Instrumentation
A DC A-h meter is rated for 15 A, 250 V. The meter constant is 14.4 A-sec/rev. The meter constant at rated voltage may be expressed as

 3750 rev/KWh.
 960 rev/KWh.
 3600 rev/KWh.
 1000 rev/KWh.

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Measurement and Instrumentation
To measure 5 volts, if one selects a 0-100 volt range voltmeter which is accurate with in ± 1%, then the error in this measurement may be up to

 ± 1.5%
 ± 7.5 %
 ± 2.5%
 ± 20%

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Measurement and Instrumentation
Systematic errors are

 environmental errors.
All of these
 observational errors.
 instrument errors.

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MORE MCQ ON Measurement and Instrumentation

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