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

 Y 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.
 X is more sensitive.

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Measurement and Instrumentation
A Manganin swap resistance is connected in series with a moving coil ammeter consisting of a milli ammeter and a suitable shunt in order to

 Obtaine large deflecting torque.
 Minimize the effect of stray magnetic fields.
  Minimize the effect of temperature variation.
 Reduce the size of the meter.

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