Q3 A 4-pole, 500 V shunt motor has 720 wave-connected conductors in the armature.The full-load armature current is 60 A and the flux per pole is 0.03 Wb. The armature resistance is 0.2 2 and the contact drop is 1 V per brush. Calculate the full-load speed of the motor.

Q3 A 4-pole, 500 V shunt motor has 720 wave-connected conductors in the armature.The full-load armature current is 60 A and the flux per pole is 0.03 Wb. The armature resistance is 0.2 2 and the contact drop is 1 V per brush. Calculate the full-load speed of the motor.

Electric Motor Control

10th Edition

ISBN:9781133702818

Author:Herman

Publisher:Herman

Chapter51: Electric And Electronic Braking

Section: Chapter Questions

Problem 2SQ: Differentiate between the AC and DC magnetic fields applied to an induction motor stator.

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Concept explainers

Motor Load, Torque, and Power Quality Requirement

An electric motor is a gadget that changes electrical energy into mechanical energy over to follow up on a mechanical burden. The weight set on the motor because of this mechanical movement is known as motor load. Appropriately matching the motor burden to the engine is vital to forestall harm to the engine or wasteful and unnecessary expensive activity. Engines perform such undertakings as moving a thing starting with one spot then onto the next, cutting it, changing its shape, etc. The motors might be evaluated as far as a few variables including power yield, voltage, current, and temperature. Harm to an engine might happen when it is worked under over the top engine load contrasted with its appraised limit.

Question

Q3 A 4-pole, 500 V shunt motor has 720 wave-connected conductors in the armature.The
full-load armature current is 60 A and the flux per pole is 0.03 Wb. The armature resistance
is 0.2 Q and the contact drop is 1 V per brush. Calculate the full-load speed of the motor.
Q4 A 440 V shunt motor has armature resistance of 0.8 2 and field resistance of 200 2.
Determine the back e.m.f. when giving an output of 7.46 KW at 85% efficiency.
S A 2 0 KW a50 V 1
1125

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