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Measurement and Instrumentation

Measurement and Instrumentation
For the AC bridge circuit shown in figure at balance the value of Rd will be

 (Rc/Rb).Ra.
 (Rb/Rc).Ra.
 (Ra/Rc).Rb.
 (Rc/Ra).Rb.

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Measurement and Instrumentation
For measurement on high voltage capacitors, the suitable bridge is

Any of the listed here
Schering bridge
Modified De santy's bridge
Wein bridge

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Measurement and Instrumentation
The disc of an instrument using eddy current damping should be of

Conducting and non magnetic material
Non conducting and magnetic material
Conducting and magnetic material
None of the listed here

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Measurement and Instrumentation
A galvanometer with a full scale current of 10 mA has a resistance of 1000 Ω. The multiplying power (the ratio of measured current to galvanometer current) of 100 Ω shunt with this galvanometer is

 10.
 100.
 11.
 110.

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Measurement and Instrumentation
The resistance of a circuit is found by measuring current flowing and the power fed into the circuit. If the limiting errors in the measurement of power and current are ± 1.5% and ± 1.0% respectively, the limiting error in the measurement of resistance

 ± 1.5%
 ± 2.5%
 ± 1%
 ± 3.5%

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

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

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