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Measurement and Instrumentation

Measurement and Instrumentation
Which of the following meter is most suitable for measuring radio frequency currents?

  Thermocouple meter.
 Moving - iron meter.
 Moving - coil meter.
 VTVM.

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Measurement and Instrumentation
PMMC type instruments normally use

None of these
Air friction damping
Eddy current damping
Fluid friction damping

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Measurement and Instrumentation
A 0 - 100 V voltmeter has a guaranteed accuracy of 2 % of full scale reading. The voltage measured by the voltmeter is 75 V. The limiting error is in percentage

 1 %.
 3.33 %.
 2 %.
  2.66 %.

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Measurement and Instrumentation
The three resistors R1, R2 and R3 have the following ratings: R1 = 25Ω ± 4%, R2 = 65 Ω ± 4%; R3 =45 Ω ± 4%. If the resistance are connected in series, then limiting error produced in equivalent resistance is

 4%
 1%
 3%
 2%

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Measurement and Instrumentation
Dynamic errors are caused by

 instrument not responding fast
 observational error
 human error
 environmental error

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Measurement and Instrumentation
Electrostatic instruments are used as

Voltmeters only
Wattmeter only
Ammeters only
Both ammeter and voltmeter

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MORE MCQ ON Measurement and Instrumentation

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