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A PMMC ammeter has a coil of 100 turns with a resistance of 10 0, the effective depth and a width of the coil are of 3 mm and 2.5 cm respectively. The meter has the flux density of 100mWb/m2 , and the spring used has a constant of 2 x 10-6 Then, calculate, a) Deflection angle, when it measures 0.015mA. b) Deflection torque exerted on the pointer, when it measures 0.02mA. c) Analyze the relationship between no of turns of the moving coil and the torque produced in a PMMC instrument.

A PMMC ammeter has a coil of 100 turns with a resistance of 10 0, the effective depth and a width of the coil are of 3 mm and 2.5 cm respectively. The meter has the flux density of 100mWb/m2 , and the spring used has a constant of 2 x 10-6 Then, calculate, a) Deflection angle, when it measures 0.015mA. b) Deflection torque exerted on the pointer, when it measures 0.02mA. c) Analyze the relationship between no of turns of the moving coil and the torque produced in a PMMC instrument.

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
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A PMMC ammeter has a coil of 100 turns with a resistance of 10 0, the effective depth and a width of the coil are of 3 mm and 2.5 cm respectively. The meter has the flux density of 100mWb/m2 , and the spring used has a constant of 2 x 10-6 Then, calculate, a) Deflection angle, when it measures 0.015mA. b) Deflection torque exerted on the pointer, when it measures 0.02mA. c) Analyze the relationship between no of turns of the moving coil and the torque produced in a PMMC instrument.
Transcribed Image Text:A PMMC ammeter has a coil of 100 turns with a resistance of 10 0, the effective depth and a width of the coil are of 3 mm and 2.5 cm respectively. The meter has the flux density of 100mWb/m2 , and the spring used has a constant of 2 x 10-6 Then, calculate, a) Deflection angle, when it measures 0.015mA. b) Deflection torque exerted on the pointer, when it measures 0.02mA. c) Analyze the relationship between no of turns of the moving coil and the torque produced in a PMMC instrument.
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