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Measurement and Instrumentation

Measurement and Instrumentation
Attraction and repulsion type instruments are the two different types of which instrument ?

  Moving iron type.
 Induction type.
 Multipliers.
 Dynamo-meter type.

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Measurement and Instrumentation
A rectifier type instrument is connected to 100VDC and is operated in the DC measuring module reads

111V
90V
50V
100V

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Measurement and Instrumentation
In figure Z1 = 200∠60° ohm. Z2 = 400∠-90° ohm, Z3 = 300∠0° ohm. Then Z4 for bridge to be balanced is

 400∠-90° ohm.
 300∠90° ohm.
 150∠30° ohm.
 600∠-150° ohm.

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Measurement and Instrumentation
Some wire- wound resistors have bifilar winding. This type of winding is used to

Reduce the tolerance
Increase the thermal stability
Reduce the inductance of winding
Double the power rating of the resistor

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Measurement and Instrumentation
A voltage of 2.70 V is being measured by an analog indicating instrument having a scale range of 0 – 5.0 V. If the instrument reads 2.65 V, then absolute error in measurement is

 0.05V
 0.01V
 0.25V
 0.01V

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Measurement and Instrumentation
Figure show an RC potentiometer to measure AC voltage. It is desire that Vo/Vi should be independent of frequency. The value of C shoud be

 11 µF.
 10 µF.
 0.09 µF.
 0.1 µF.

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