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Measurement and Instrumentation

Measurement and Instrumentation
How many fundamental units are there ?

 6
 8
 7
 4

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Measurement and Instrumentation
Two voltmeters have the same range 0-400V. The internal impedance are 30,000 Ohms and 20,000 Ohms. If they are connected in series and 600V be applied across them, the readings are

400V and 200V
360V and 240V
300V each
One of the meters out of the range and other 100V

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

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

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Measurement and Instrumentation
Kelvin’s double bridge is used to measure low resistance because

 resistance variation due to temperature.
 effect of contact and lead resistance is eliminated.
 there is no thermo electric emf.
 it has high sensitivity.

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Measurement and Instrumentation
The adjustment of position of shading bands, in an energy meter is done to provide

Creep compensation
Friction compensation
Breaking torque
None of the listed here

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

50V
90V
100V
111V

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MORE MCQ ON Measurement and Instrumentation

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