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Measurement and Instrumentation

Measurement and Instrumentation
A 150 V moving iron voltmeter of accuracy class 1-0 reads 75 V when used in a circuit under standard condition. The maximum possible percentage error in the reading is

 1%
 1.5%
 2.5%
 2%

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

Current
Resistance
Frequency
Voltage

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

All of the listed here
Shunt
Potential transformers
Current transformers

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Measurement and Instrumentation
A sampling wattmeter is used to measure the average power of a load. The peak to peak voltage of a square wave is 10 V and the current is triangular wave of 5 Amp P-P as shown in the figure. The period is 20 ms. The reading in W will be

 100 W.
  0 W.
 25 W.
 50 W.

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Measurement and Instrumentation
Which wave has the least form factor?

Rectangular wave
Square wave
Triangular wave
Sine wave

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Measurement and Instrumentation
Which meter is suitable for the measurement of 10mV at 50MHz?

Moving coil voltmeter
VTVM
Moving iron voltmeter
CRO

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