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Measurement and Instrumentation

Measurement and Instrumentation
The scale of a rectifier instrument is

Linear
Non-linear
Either linear or non linear
None of the listed here

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Measurement and Instrumentation
The dynamometer principle can be used for

 ammeter only.
 wattmeter only.
 ammeter, voltmeter and wattmeter.
 voltmeter only.

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

Hot wore meter
Moving coil meter
Thermocouple meter
Moving iron meter

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Measurement and Instrumentation
A galvanometer has

Eddy current damping
Air friction damping
Fluid friction damping
Spring coil damping

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Measurement and Instrumentation
The resistance of a circuit is measured from the relation R= P/I2, where P is the power fed into the circuit and I is the current flowing through it. If the limiting errors in the measurement of power and current are respectively ± 1.0% and ± 1.0%, then what will be the limiting error in measurement of resistance ?

 ± 1.5%
 ± 3.0%
 ±0.5%
 ±3.5%

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Measurement and Instrumentation
The circuit in figure is used to measure the power consumed by the load. The current coil and the voltage coil of the wattmeter have 0.02 Ω and 1000 Ω resistance respectively. The measured power compared to the load power will be

 0.2% less.
 0.2% more.
 0.4 more.
 0.4% less.

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MORE MCQ ON Measurement and Instrumentation

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