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Measurement and Instrumentation

Measurement and Instrumentation
To measure high frequency currents, we mostly use ______ ammeter.

Moving iron
Thermocouple
Hot wire
Dynamometer

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Measurement and Instrumentation
A multirange instrument has

Multiple shunt or series resistance inside the meter
Multirange meters inside the measurement system
Multicoil arrangement
Variable turns of coil

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Measurement and Instrumentation
The form factor in AC is the ratio of

Peak value to average value
Rms value to peak value
Rms value to average value
Peak value to rms value

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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

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

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Measurement and Instrumentation
Which of the following quantities consists of S.I. unit as Hertz?

 Frequency
 Charge
 Power
 Force

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Measurement and Instrumentation
Deflection method direct measurements are most widely used as these are

 least time consuming.
 most accurate.
 most simple and least time consuming.
 most simple.

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