Measurement and Instrumentation
A PMMC instrument can be used as flux meter

By making control springs of large moment of inertia
By using a low resistance shunt
By using a high series resistance
By eliminating the control springs

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Measurement and Instrumentation
It can be stated that

CT operates with considerably lower flux density than a PT
No generalisation can be made with regard to the flux densities in CT and PT
CT operates at almost the same flux density as a PT
CT operates with a higher flux density than PT

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Measurement and Instrumentation
If an inductance L is connected in one arm of bridge and resistance R1, R2, R3 in other three arms

 The bridge is balanced for some specified value of frequency.
 The bridge is balanced for some specified value of R1, R2, R3.
 The bridge can be balanced.
 The bridge can not be balanced.

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Measurement and Instrumentation
A resistance of 105 ohms is specified using significant figures as indicated below : 1. 105 ohms 2. 105.0 ohms 3. 0.000105 mega ohms Among these,

 2 and 3 represent greater precision than 1.
 1 represents greater precision than 2 and 3.
 1, 2 and 3 represent same precision.
 2 represents greater precision but 1 and 3 represent same precision.

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