2Q) A PMMC voltmeter with a resistance of 10 ohms gives has a coil of effective depth of 3 mm and a width of 2.5 cm, the coil has about 100 turns. The flux spread in the air gap is of 10mWb/m2. The spring has a constant of 2 x 10-6. Then calculate, i. Deflection torque produced by the coil, when it is connected to 20V to measure. ii. Deflection made by the pointer, when the meter is to measure a voltage of 10V. iii. Analyze the reason of fixed the voltage coil in dynamo type wattmeter?
2Q) A PMMC voltmeter with a resistance of 10 ohms gives has a coil of effective depth of 3 mm and a width of 2.5 cm, the coil has about 100 turns. The flux spread in the air gap is of 10mWb/m2. The spring has a constant of 2 x 10-6. Then calculate, i. Deflection torque produced by the coil, when it is connected to 20V to measure. ii. Deflection made by the pointer, when the meter is to measure a voltage of 10V. iii. Analyze the reason of fixed the voltage coil in dynamo type wattmeter?
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
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2Q) A PMMC voltmeter with a resistance of 10 ohms gives has a coil of effective depth of 3 mm and a width of 2.5 cm, the coil has about 100 turns. The flux spread in the air gap is of 10mWb/m2. The spring has a constant of 2 x 10-6. Then calculate,
i. Deflection torque produced by the coil, when it is connected to 20V to measure.
ii. Deflection made by the pointer, when the meter is to measure a voltage of 10V.
iii. Analyze the reason of fixed the voltage coil in dynamo type wattmeter?
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