Measurement and Instrumentation
If two meters X and Y require 40 mA and 50 mA respectively, to give full scale deflection, then

 X is more sensitive.
 It would not be possible to assess the sensitivity on the basis of the given data.
 Both X and Y are equally sensitive.
 Y is more sensitive.

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Measurement and Instrumentation
A DC potentiometer is the best means available for the measurement of DC voltage because

 None of above.
  It is based on null balance technique.
 It is possible to standardize before a measurement is undertaken.
 The precision in measurment is independent of the type of the defector used.

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