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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

 1.5%
 2.5%
 2%
 1%

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Measurement and Instrumentation
An oscilloscope indicates

RMS value
Average value
Peak to peak value of voltage
DC value of voltage

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Measurement and Instrumentation
A meter has a full-scale deflection of 90o at a current of 1 A. The response of the meter is square law. Assuming spring control, the current for a deflection at 45o will be

 0.70 A.
 0.67 A.
 0.50 A.
 0.25 A.

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Measurement and Instrumentation
The expected value of the voltage across a resistor is 80 V, and the measured value is 79 V. What is the percentage error and relative accuracy of the measurement ?

 1.25% & 98.75%
 1.5% & 99%
 1.25% & 98.25%
 1.5% & 98.75%

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Measurement and Instrumentation
The rectifier instrument is not free from

Temperature error
All of the listed here
Frequency error
Wave shape error

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Measurement and Instrumentation
A permanent magnet moving coil ammeter is connected in 50 Hz a. c. Circuit in which 5A current is flowing. The meter will read

0 A
5 A
2.5 A
None of the listed here

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MORE MCQ ON Measurement and Instrumentation

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