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Measurement and Instrumentation

Measurement and Instrumentation
How many fundamental units are there ?

 8
 6
 4
 7

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Measurement and Instrumentation
When a potentiometer is used for measurement of voltage of an unknown source, the power consumed in the circuit of the unknown source under null condition is

 ideally zero.
 high.
 small.
 very high.

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Measurement and Instrumentation
______ movement is most expensive.

None of the listed here
Dynamometer
Moving iron
D'Arsonval movement

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Measurement and Instrumentation
The spring material used in a spring control device should have the following property.

Most be of low temperature co-efficient
Should have low specific resistance
All of the listed here
Should non magnetic

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Measurement and Instrumentation
A DC potentiometer is designed to measure up to about 2V with a slide wire of 800 mm. A standard cell of emf 1.18 V obtains balances at 600 mm. A test cell is seen to obtain balance at 680 mm. The emf of test cell is

 1.34 V.
 1.7 V.
 1.5 V.
 1 V.

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Measurement and Instrumentation
In an Anderson bridge, the unknown inductance is measured in terms of

Known inductance
Known resistance
Known capacitance and resistance
Known inductance and resistance

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