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Measurement and Instrumentation

Measurement and Instrumentation
For a circuit given that I = 2 ± 5 % A, R = 100 ± 0.2 % Ω the limiting error in the power dissipation I2 R in the resistor R is

 25.2%
 10.2%
 1.2%
 5.2%

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Measurement and Instrumentation
A DC A-h meter is rated for 15 A, 250 V. The meter constant is 14.4 A-sec/rev. The meter constant at rated voltage may be expressed as

 3600 rev/KWh.
 3750 rev/KWh.
 1000 rev/KWh.
 960 rev/KWh.

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Measurement and Instrumentation
The use of thermocouple meters for AC measurement leads to scale which is

 expontial.
 square law.
 logarithmic.
 linear.

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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

 none of above.
 0.
 0.5.
 1.

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Measurement and Instrumentation
Some wire- wound resistors have bifilar winding. This type of winding is used to

Reduce the inductance of winding
Increase the thermal stability
Reduce the tolerance
Double the power rating of the resistor

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Measurement and Instrumentation
Wien bridge is useful for measuring

Very high frequency
Low frequency
High frequency
Medium frequency

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MORE MCQ ON Measurement and Instrumentation

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