Measurement and Instrumentation
Assertion (A) : It is always desirable to take the reading of an indicating instrument very close to the full scale reading. Reason (R) : Accuracy of an indicating instrument is maximum at the full scale deflection and error increases as reading comes closer to the beginning of the scale.

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

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Measurement and Instrumentation
Consider the following statement - 1. The compensating coil of a low power factor wattmeter compensates the effect of the impedance of the current coil. 2. The compensating coil of a low power factor wattmeter compensates the effect of the impedance of the voltage coil circuit.

  1 is false but 2 is true.
 Both 1 and 2 are true.
 Both 1 and 2 are false.
 1 is true but 2 is false.

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