A 110 V, 60 Hz, 6 – pole single phase induction motor 1/3 hp has the followingequivalent circuit impedances:RI = 1.52 ohm, R2 = 3.13 ohm and x1 =2.10 ohm, x2 =1.56 ohm. Xm=58.2ohm, The Friction, windage and stry losses =16W, the core loss = 35 W, For aslip of 0.05, calculation (a) input current, (b) power factor, (c) developed power,(d) output power, (e) speed (f) in put power (g) air gab power (h) T ind (i) T load6) efficiency.

According to the question we have to find the value of input current, power factor and developed…

Answered: A 110 V, 60 Hz, 6 - pole single phase…

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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4. The portion of the flux that goes through one of the transformer coils but not the other one is called. A) Average flux B) Mutual flux D) Leakage flux C) Total flux 5. The fundamental component of the magnetization current ------- the voltage applied to the core by ------ 90°: A) Lags, 45° B) Leads, 45°. D). Leads, 90°. C) Lags, 90°. 6. The ----- are resistive heating losses in the core of the transformer. A) Hysteresis losses. B) Copper losses. C) Leakage flux losses. D) Eddy current losses. 7. The total rotational losses of an induction motor are a combination of: A) Friction losses B) Windage losses. C) Core losses. D) Stray losses. 8. Induction motors are now the preferred A) absence of brushes. choice for industrial motors due to B) Small size. C) Less control requirements. D) rugged construction. 9. For an induction motor, if the synchronous speed is 1800 r/m, and the rotor speed 180rad/sec, then the slip will be: A) 5.5 % C) 6% B) 4.5% D) 4% 10. The lower the speed of an…
A 3 phase AC induction motor is operating at no load. What is the power factor? Group of answer choices A) leading B) lagging C) neither leading nor lagging
In a three-phase induction motor the maximum torque occurs at 20% slip and the equivalent resistance of the secondary is 0.04Ω per phase. Find the equivalent load resistance and the load voltage and the load current. Output power is 20 kW.
The rotor winding current for a four-pole synchronous ac generator with a distributed rotor winding having 263 series turns, a winding factor of 0.9, an air gap length of 0.6 mm, and a peak flux density of 1.6 T is,
Homework 2 A three-phase, two-pole, 35 hp, 480 V, 60 Hz, Y-connected induction motor has the following constants in ohms per phase referred to the stator: R = 0.322N R2 = 0.196 Q X1 = 0.675Q X2 = 0.5102 Xm = 12.52 The total rotational losses are 1850 W and are assumed to be constant. The core loss is lumped in with the rotational losses. For a rotor slip of 3% at the rated voltage and rated frequency, determine the following: (a) The speed in rpm and in rad/s (b) The stator current (c) The power factor (d) The developed power and output power (e) The developed torque and output torque (f) The efficiency.
A three-phase induction motor operates at a slip of 3% and has a rotor copper loss of 300W. The rotational loss is 1500W. Determine (a) the airgap power and (b) the power output.
The rotor of a 3-phase, 60 Hz, 4-pole induction motor takes 118 kW at 3Hz. The motor has stator copped loss of 2.95 kW, a mechanical loss of 2kW and a stator core loss of 1.7 kW. Solve for the motor efficiency
A 30 MVA, 11KV, 50 Hz, star-connected three-phase alternator has an effective armature resistance per phase = 0.020 and synchronous reactance per phase = 2.252. Find the % regulation for a power factor of 0.707 lagging. What is the load angle of the alternator under this condition?
Do you think that a three – phase induction motor could be used to establish the phase sequence of a three – phase line? Explain in 2-5 sentences
three phase 400v (line voltage) 60 hz 6 pole star connected snkron generator per phase .It has 2 ohm synchronous reactor. the armature current of the generator at full load is 64 A with a power factor of 0.95 back. this generator has 2kW rotation loss and 1.6 kW core loss at full load. the excitation current is set to be 400 V when the generator is idle. generator current with 0.95 back power factor at full loadA) find the rotating field current of the generatorb) find the mechanical speed of the generatorc) What is the output voltaged) find the yielde) calculate voltage regulation
6 shunt generators are running in parallel in a curtain generating station. Each generator supplies a load current of 500 A at 220 V. The shunt field current of each generator is 5 A and the armature resistance of each machine is 0.05 ohm. If one generator is suddenly switched off determine the percentage change in terminal voltage, the total load current being kept uncharged

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