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Measurement and Instrumentation

Measurement and Instrumentation
The resistance can be measured most accurately by

Voltmeter-ammeter method
Bridge method
Megger
Multimeter

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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.
 0.5.
 none of above.
 0.

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Measurement and Instrumentation
Which of the following meters has a linear scale?

Thermocouple meter
Hot wore meter
Moving iron meter
Moving coil meter

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Measurement and Instrumentation
The given figure shows wein bridge connection for frequency measurement. C and R are variables and gang together. For balanced condition the expression for frequency is f = 1/2πCR when

 R1 = 3R2.
 R1 = R2/2.
 R1 = R2.
 R1 = 2R2.

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Measurement and Instrumentation
Wien bridge is useful for measuring

Medium frequency
Low frequency
High frequency
Very high frequency

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Measurement and Instrumentation
The controlling torque of an indicating instrument ______ as the deflection of the moving system increases.

None of the listed here
Increases
Decreases
Remains same

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