Answered: 3. i. Write the working principle of…

3. i. Write the working principle of Permanent Magnet Moving Coil instrument mention the importance spring used. ii. Explain how a single PMMC instrument can be used as ammeter and voltmeter.

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter29: Dc Generators

Section: Chapter Questions

Problem 10RQ: What is armature reaction?

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Concept explainers

Thermocouple

A thermocouple is a temperature measurement device. It includes diverse metal wires which are joined collectively to form a joint. At the same time as the junction is hot or cold, a small voltage is generated inside the measuring thermocouple electrical circuit, which corresponds to the temperature.

Question

3. i. Write the working principle of Permanent Magnet Moving
Coil instrument mention the importance spring used.
ii. Explain how a single PMMC instrument can be used as
ammeter and voltmeter.

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