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Measurement and Instrumentation

Measurement and Instrumentation
A potentiometer may be used for

Measurrment of resistance
All of the listed here
Measurement of current
Calibration of ammeter

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Measurement and Instrumentation
A pressure measurement instrument is calibrated between 10 bar and 260 bar. The scale span of the instrument is

 260 bar.
 270 bar.
 10 bar.
  250 bar.

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Measurement and Instrumentation
Which of following are needed both for protection and metering?

 Power factor meters.
 Wattmeters.
 Energy meter.
 Instrument transformer.

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Measurement and Instrumentation
The current ‘I’ through a resistance R is measures with the following uncertainties I = 4 A ± 0.5%, R = 100Ω±0.2%. If power is computed from these two measured quantities, the uncertainty in the power computed will be

 1.5%
 1%
 0.5%
 1.2%

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Measurement and Instrumentation
One single phase wattmeter operating on 230V and 5A for 5 hours makes 1940 revolutions. Meter constant in revolutions is 400. What is the power factor of the land?

0.65
0.73
0.84
1

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Measurement and Instrumentation
Which of the following are integrating instruments?

Voltmeters
Ammeters
Ampere hour and watt hour meters
Wattmeters

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MORE MCQ ON Measurement and Instrumentation

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