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Measurement and Instrumentation

Measurement and Instrumentation
The errors mainly caused by human mistakes are

 systematic error.
 instrumental error.
  gross error.
 observational error.

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Measurement and Instrumentation
Which of the following instruments can be used to measure AC current only?

Permanent Magnet Type ammeter
Moving iron voltmeter
Induction type ammeter
Moving iron ammeter

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Measurement and Instrumentation
With a sweep time 10ms across the screen the approx. horizontal sawtooth frequency will be

50Hz
500Hz
1kHz
100Hz

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Measurement and Instrumentation
The range of a moving iron ac ammeter is extended by

None of the listed here
A multiplier
A shunt
Changing number of turns of operating coil

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Measurement and Instrumentation
It is found that 10A current passes through a resistor of 10°hms. The resistor has 5% tolerance . The error in measurement of current can be as high as 5%. What is max error in measurement of power, calculated from measured value of I and the nominal value of resistor?

200W
150W
50W
100W

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Measurement and Instrumentation
A 0 - 250V voltmeter has a guaranteed accuracy of 2% of full scale reading. What is the percentage of error if it measures 150V?

 2%
 3.33%
 1%
 5%

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MORE MCQ ON Measurement and Instrumentation

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