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Measurement and Instrumentation

Measurement and Instrumentation
Which of the following devices may be used for extending the range of instruments?

All of the listed here
Potential transformers
Shunt
Current transformers

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Measurement and Instrumentation
The resistance offered to the passage of an in-varying current by a column of mercury at the temperature of melting ice of mass 14.4521 gms of uniform cross-sectional area and length 106.3cm is

One ohm according to SI units
One international ohm
Standard ohm
One ohm according to working standards

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Measurement and Instrumentation
Most accurate measurement of unknown resistance will be by

Ohmmeter
Potentiometer
Voltmeter and ammeter
Wheatstone bridge

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Measurement and Instrumentation
0-150 V voltmeter has an accuracy of 1% of full-scale reading. The voltage measured by the instrument is 75 V. The limiting error is

 1%
 2%
 4%
 3%

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Measurement and Instrumentation
Which of the following meters has a linear scale?

Thermocouple meter
Moving coil meter
Hot wore meter
Moving iron meter

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Measurement and Instrumentation
Which of the following cannot be measured by multimeters?

Frequency
Voltage
Resistance
Current

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