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Electronic Mechanic
Electronic Mechanic Set-1
AC and DC Measuring Instruments
22

AC and DC Measuring Instruments MCQ with Answers

22) Why the soft iron pieces in the moving iron meter is tongue shaped?

To generate heat

To damp the oscillations

To achieve uniformity of scale

To produce magnetic attraction

Answer is:

To achieve uniformity of scale

AC and DC Measuring Instruments MCQ with Answers

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Related AC and DC Measuring Instruments MCQ with Answers

23) How the sensitivity of voltmeter is determined?

FSD current

Meter coil resistance

Ohms per volt rating

Maximum voltage measurement

Answer is:

Ohms per volt rating

24) What is the name of the procedure carried out to ensure the trustworthy standards of the measuring instrument?

Calibration

Range test

Re-alignment

Testing standards

Answer is:

Calibration

25) How the accuracy of amplitude and frequency measured by CRO is checked?

By sine wave signal

By function generator

By complex wave form

By built-in calibration signal

Answer is:

By built-in calibration signal

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