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Measurement and Instrumentation

Measurement and Instrumentation
The difference between the measured value and the true value is called

 absolute error
 relative error
 probable error
 gross error

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Measurement and Instrumentation
PMMC Instrument can be used for

AC work only
Both AC and DC
DC work only
None of the listed here

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Measurement and Instrumentation
Kelvin’s double bridge is used to measure low resistance because

 it has high sensitivity.
 effect of contact and lead resistance is eliminated.
 resistance variation due to temperature.
 there is no thermo electric emf.

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Measurement and Instrumentation
0-150 V voltmeter has an accuracy of 1% of full-scale reading. The voltage measured by the instrument is 75 V. The limiting error is

 4%
 1%
 3%
 2%

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Measurement and Instrumentation
A spring-controlled moving iron voltmeter draws a current of 1 mA for full scale value of 100V. If it draws a current of 0.5 mA, the meter reading is

 100 V.
 25 V.
 50 V.
 200 V.

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Measurement and Instrumentation
In a wheatstone bridge, a change of 6 Ω in the unknown arm of bridge is required to produce a change in deflection of 2.4 mm of the galvanometer. The sensitivity is

 5.0 mm/Ω
 0.4 mm/Ω
 2.5 mm/Ω
 0.8 mm/Ω

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MORE MCQ ON Measurement and Instrumentation

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