Measurement and Instrumentation
When using ohmmeter, applied voltage is to be disconnected from the circuit because

Voltage source will increase resistance
The ohmmeter has its own internal battery
None of these
Current will decrease resistance

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Measurement and Instrumentation
It can be stated that

CT operates with considerably lower flux density than a PT
CT operates with a higher flux density than 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

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Measurement and Instrumentation
Assertion (A) : Precision is a necessary prerequisiteof accuracy. Reason (R) : Precision guarantees accuracy.

 A is true but R is false
 A is false bur R is true
 Both A and R are true but R is NOT the correct explanation of A
 Both A and R are true and R is the correct explanation of A

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