Question

what is the need of controlling torque in measuring instrument

Answer 1

Answer:

The controlling torque performs two functions. Controlling torque increases with the deflection of themoving system so that the final position of the pointer on thescale will be according to the magnitude of an electrical quantity(i.e. current or voltage or power) to be measured.

Explanation:

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Answer 2

Controlling torque increases with the deflection of the moving system so that the final position of the pointer on the scale will be according to the magnitude of an electrical quantity (i.e. current or voltage or power) to be measured.

Function of controlling torque

1. The function is to opposes the deflection force and increases with the increase in the deflection of the moving system, to limit its movement.

2. and brought pointer to set a position where the two opposing forces i.e. deflection and controlling forces are equal.