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Measurement and Instrumentation

Measurement and Instrumentation
What is the unit of plane angle?

 Degree
 Radian
 Candela
 Steradian

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Measurement and Instrumentation
In two wattmeter method of power measurement if the total power is measured by one wattmeter only then power factor of the system is

 1.
 none of above.
 0.5.
 0.

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Measurement and Instrumentation
The chemical effect of current is used in

C. ammeter
C. ammeter hour meter
None of these
C. energy meter

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Measurement and Instrumentation
The repeat accuracy of an instrument can be judged from its

Standard deviation of error
Dynamic error
Static error
Linearity error

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Measurement and Instrumentation
An current of is measured with a thermocouple, 5 A full scale meter. What is the meter reading?

  3 A.
 5 A.
 2+3√2 A.
 2 A.

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Measurement and Instrumentation
A moving iron ammeter produces a full scale torque of 240 μNm with a deflection of 120° at a current of 10 A. The rate of change of self induction (μH/radian) of the instrument at full scale is

 2.0 μH/radian.
 114.6 μH/radian.
 12.0 μH/radian.
 4.8 μH/radian.

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MORE MCQ ON Measurement and Instrumentation

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