please answer asap..tqelectrical machine A 460-V, 25-hp, 60-Hz, four pole, Y-connected induction motor has thefollowing impedances in ohms per phase referred to the stator circuit:R₁= 0.6410R2=0.3320X = 1.106ΩX₂ = 0.4640Хм=26.3ΩThe total rotational losses are 1100 W and are assumed to be constant.The core loss is lumped in with the rotational losses. For a rotor slip of2.2 % at the rated voltage and rated frequency, find the motor'sa) Speedb) Stator currentc) Power factor

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A 460-V, 25-hp, 60-Hz, four pole, Y-connected induction motor has the following impedances in ohms per phase referred to the stator circuit: R₁ = 0.6410 R₂ = 0.3320 X₁ = 1.1060 X₂ = 0.4640 XM = 26.30 The total rotational losses are 1100 W and are assumed to be constant. The core loss is lumped in with the rotational losses. For a rotor slip of 2.2 % at the rated voltage and rated frequency, find the motor's a) Speed b) Stator current c) Power factor

A 460-V, 25-hp, 60-Hz, four pole, Y-connected induction motor has the following impedances in ohms per phase referred to the stator circuit: R₁ = 0.6410 R₂ = 0.3320 X₁ = 1.1060 X₂ = 0.4640 XM = 26.30 The total rotational losses are 1100 W and are assumed to be constant. The core loss is lumped in with the rotational losses. For a rotor slip of 2.2 % at the rated voltage and rated frequency, find the motor's a) Speed b) Stator current c) Power factor

Electric Motor Control

10th Edition

ISBN:9781133702818

Author:Herman

Publisher:Herman

Chapter39: Synchronous Motor Operation

Section: Chapter Questions

Problem 14SQ: Induction motors and welding transformers require magnetizing current, which causes a. lagging power...

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Concept explainers

Nodal Analysis

In the analysis of any electric circuit, nodal analysis is the method of determining the potential difference or voltage between different nodes in an electric circuit. A node is a point where two or more branches connect each other. In the nodal analysis, the voltages are determined in the terms of branch currents. The nodal analysis is also known as the node voltage method or branch current method. The nodal analysis method is one of the several applications of Kirchhoff's Current Law (KCL).

Question

please answer asap..tq

electrical machine

A 460-V, 25-hp, 60-Hz, four pole, Y-connected induction motor has the
following impedances in ohms per phase referred to the stator circuit:
R₁
= 0.6410
R2
=
0.3320
X = 1.106Ω
X₂ = 0.4640
Хм
=
26.3Ω
The total rotational losses are 1100 W and are assumed to be constant.
The core loss is lumped in with the rotational losses. For a rotor slip of
2.2 % at the rated voltage and rated frequency, find the motor's
a) Speed
b) Stator current
c) Power factor

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A 3-0, 50-Hz induction motor with its rotor star-connected gives 500 V (r.m.s.) at standstill between slip-rings on open circuit. Calculate the current and power factor in each phase of the rotor windings at standstill when joined to a star-connected circuit, each limb of which has a resistance of 10 Q and an inductance of 0.03 H. The resistance per phase of the rotor windings is 0.2 Q and inductance 0.03 H. Calculate also the current and power factor in each rotor phase when the rings are short- circuited and the motor is running with a slip of 4 per cent. [13.6 A, 0.48; 27.0 A, 0.47] (London University) A 4-pole, 50-Hz, 3-phase induction motor has a slip-ring rotor with a resistance and standstill reactance of 0.04 2 and 0.2 2 per phase respectively. Find the amount of resistance to be inserted in each rotor phase to obtain full-load torque at starting. What will be the approximate power factor in the rotor at this instant ? The slip at full-load is 3 per cent. [0.084 2, 0.516 p.f.]…