4. A moving coil instrument has the following data, Number of turms 100, Width of coil – 20 mm, W- 20mm Depth of coil 30 mm, D- 30mm flux density in the air gap - 0.1 Wb m. Calculate the deflecting torque when the coil carry a current of 10 mA. Also calculate the deflection, if the control spring constant (K) is 2 x 104 Nm'degree.

4. A moving coil instrument has the following data, Number of turms 100, Width of coil – 20 mm, W- 20mm Depth of coil 30 mm, D- 30mm flux density in the air gap - 0.1 Wb m. Calculate the deflecting torque when the coil carry a current of 10 mA. Also calculate the deflection, if the control spring constant (K) is 2 x 104 Nm'degree.

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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For the design we assuming following parameters 1) winding : Lap 2) simplex 3) Number of slots : 16 , single turn coil with 2 conductors per slot 4) Number of poles = 4
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Q2. A 4-pole, wave-wound armature has 72 slots with two coil-sides per slot, each coil has four turns. If the flux per pole is 20 mWb and the armature rotates at 720 rpm, what is the induced emf across the armature? (Ans. 276.48 V) 03 A 4 nolo nmeghine he umoture vith 00 clots ond o gonduetors nor elet the fluy nor nole is 005
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