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Measurement and Instrumentation

Measurement and Instrumentation
The error of an instrument is normally given as a percentage of

Full-scale value
Mean value
Measured value
Rms value

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Measurement and Instrumentation
The maximum percentage error in the sum of two voltage measurements when V1 = 100V ± 1% and V2 = 80V ± 5% is

 ± 4%
 ± 6%
 ± 2.8%
 ± 3%

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Measurement and Instrumentation
Resolution of an instrument is

 the minimum quantity it can measure.
 the maximum quantity it can measure.
 ability to distinguish polarity.
 the maximum non linearity.

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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

 2.5%
 1%
 2%
 1.5%

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Measurement and Instrumentation
Which of following voltmeters would you use for measuring voltage across 20KΩ resistance

 Voltmeter having sensitivity of 1 KW/V.
 Voltmeter having a resistance of 5 ΩK.
  Voltmeter having sensitivity of 10 KW/V.
 None of above.

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Measurement and Instrumentation
The moving coil-meters, damping is provided by

 eddy current disk.
 the aluminium frame of the coil.
 damping vane in the airtight chamber.
 the coil spring attached to the moving.

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MORE MCQ ON Measurement and Instrumentation

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