A moving coil instrument whose resistance is 25Ω gives a full-scale deflection with a current of 1 mA. This instrument is to be used with a manganin shunt to extend its range to 100 mA. Calculate the error caused by a 10°C rise in temperature when : (a) Copper moving coil is connected directly across the manganin shunt.

A moving coil instrument whose resistance is 25Ω gives a full-scale deflection with a current of 1 mA. This instrument is to be used with a manganin shunt to extend its range to 100 mA. Calculate the error caused by a 10°C rise in temperature when : (a) Copper moving coil is connected directly across the manganin shunt.

Electric Motor Control

10th Edition

ISBN:9781133702818

Author:Herman

Publisher:Herman

Chapter3: Magnetic Starters

Section: Chapter Questions

Problem 30SQ

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