Measurement and Instrumentation
The main advantage of Anderson bridge over Maxwell bridge is that

 measures high Q inductors.
  reduction of the cost.
 attaining balance condition is easier.
 balance equation independent of frequency.

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Measurement and Instrumentation
Assertion(A): A low power factor wattmeter has special constructional features to ensure accurate measurment. Reason(R): Extension of wattmeter range in DC circuit can be easily done by using current and potential transformer

 A is true R is false.
 A is false R is true.
 Both A and R is true and R is correct explanation of A C.
 Both A and R is true and R is not correct explanation of A.

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