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Measurement and Instrumentation

Measurement and Instrumentation
Moving iron instruments have _____ scale.

Log
Uniform
Squared
None of the listed here

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Measurement and Instrumentation
In eddy current damping, disc or former is made of a material that is a

Non conductor and non magnetic
Conductor but magnetic
Non conductor but magnetic
Conductor but 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

 1.7 V.
 1 V.
 1.5 V.
 1.34 V.

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Measurement and Instrumentation
The operating voltage of a megger is about

6 V
40 V
100 V
12 V

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Measurement and Instrumentation
An electric pyrometer is an instrument used to measure

Frequency
High temperatures
None of the listed here
Phase

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Measurement and Instrumentation
The total current I = I1 + I2 in a circuit is measured I1 = 150 ± 3A , I2 = 250 ± 4 A, where the limits of error are given as standard deviations. I is measured as

 (400 ± 1) A
 (400 ±5) A
 (400 ± 2.24) A
 (400 ± 3) A

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