Q/ A 4-pole, 400V, 3-phase, 50Hz induction motor runs at 1440 r.p.m. at 0.8 p.f. lag and delivers an output of 10.8KW. The stator loss is 1060W and friction, windage etc. losses are 300W. Calculate: (i) Slip. (ii) rotor copper loss. (iii) rotor frequency. (iv) line current.

Q/ A 4-pole, 400V, 3-phase, 50Hz induction motor runs at 1440 r.p.m. at 0.8 p.f. lag and delivers an output of 10.8KW. The stator loss is 1060W and friction, windage etc. losses are 300W. Calculate: (i) Slip. (ii) rotor copper loss. (iii) rotor frequency. (iv) line current.

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...

See similar textbooks

Related questions

Q: (a) The reactance's of the alternator during the periods of the subtransient, transient and steady…

A: Given : XL=0.15 ΩXD=0.24 ΩXF=0.44 ΩXa=0.7 Ω Step 1 : Calculate transient reactance Transient…

Q: A 6 pole , three phase induction motor operates from a 300V,45Hz supply. The slip of the machines is…

A: For the three-phase induction motor speed at horsepower output of the motor is determined as shown…

Q: Describe the simulation of three phase induction motor

A: Three Phase Induction Motor: A three-phase induction motor is an electro mechanical energy converter…

Q: The reactance’s of the alternator during the periods of the subtransient, transient and steady…

A: An alternator/Synchronous generator is a type of electrical machine that converts mechanical energy…

Q: a) Estimate the stator core loss. Assume the maximum lamination flux density is 1.65 T.

Q: What is the difference between transformer and 3ph asynchronous motor

A: The primary and secondary windings of a transformer are known as the stator and secondary windings…

Q: Determine the synchronous impedance and reactance of an alternator in which a given field current…

A: Note: Synchronous impedence of a Synchronous machine is defined as the ratio of open circuit voltage…

Q: component is fabricated using cast iron in an Induction motor. Bearings Stator frame Rotor stator…

A: 3-Phase Induction Motor- 3-Phase induction machine- When three-phase stator displaced by 120' is…

Q: In a three phase cylindrical rotor alternator, the resultant armature reaction MMF behaves like a…

A: Armature reaction in three phase alternator: Armature reaction in any machine is the distortion in…

Q: QUESTION 12 An 6.6 kV, three-phase star-co armature resistance is 1.2 Qa Determine efficiency of the…

A: Line voltage Full load current I = 200 A.Power factor = 0.8 ( Leading ).Armature resistance per…

Q: What are all the effects of harmonics in power system? Define Total Harmonic Distortion (THD) and…

A: Harmonics can be defined as components with periodic waveforms having multiples of fundamental…

Q: Q3/ A/ Compare between de series and shunt generator. Q3/ B/ Briefly explain the commutating process…

Q: A 10-pole 3-phase induction motor supplied from a 380V, 50 Hz supply. If slip is 4% calculate: The…

A: Given a 3-phase induction motor with, Total number of pole, P=10. Supplied voltage, V=380 V.…

Q: This question refers to a three-phase induction motor. which statement are false (A) The slip speed…

A: According to question:

Q: 6. A 2000KVA, 3300V, 3-phase star -connected altemator delivers rated load at a P.F. of…

A: For an electrical machine efficiency is a very important parameter it tell us about how much power…

Q: A 3-phase, 2-pole-pair, induction machine operates at 1450 revolutions per minute when fed from a…

Q: he field current of a synchronous generator is adjusted to give an air-gap flux of 0.01 reber per…

Q: (. What will be the air gap power (in watts) developed by a 3-phase induction motor, whose ratings…

A: It is given that: Terminal Voltage=Vt=230 (line voltage)Vt(phase)=Vt3=2303=132.79 VOutput…

Q: If rotor of an induction motor runs at synchronous speed, slip will be equal to 1. Select one: O…

A: Given: Rotor of Induction motor running at synchronous speed

Q: The amount of torque developed by a 3-phase squirrel-cage induction motor from no-load to rated-load…

A: A simple question on electrical machines shbject . I provided the detailed solution for the same.…

Q: The single - phase ac voltage controller with inductive load. Plot the waveform of output voltage…

A: According to the question we have to plot waveform according to given conditions.

Q: Complete the blank If a 3-phase induction motor has synchronous speed of 1200 rpm and the frequency…

A: Synchronous speed (Ns)=1200 rpm Frequency(f)=60 Hz Ns=(120f)/P Where P= number of pole. (Ns)(P)=120f

Q: A balanced three phase induction motor has an efficiency of 0.85 when its output is 44.76 kW. At…

A: In this question, We need to determine the slip of the induction motor? If output power Po=…

Q: A 10-pole 3-phase induction motor supplied from a 380V, 50 Hz supply. If slip is 4% calculate: The…

Q: ated output with a power factor of 80%. The DC armature resistance at 70°C between terminals is 0.08…

A: Given, Alternator rating = 1500KVA, 2300 V, 3-PHASE, Y-connected Power factor = 80% At 70° C,…

Q: If the number of slots per pole in a synchronous machine is 9 and each coil spans 6 slot pitches,…

A: For this problem we can easily find pitch factor by finding slot angle .

Q: A 4-pole, 3-phase alternator drives at 1000 r.p.m. is supplying to an induction motor which has full…

A: Given: 3 Phase Alternator P = 4 Ns = 1000 RPM Full load Speed = 2880 RPM

Q: Q6) Assume that we want to add the following instruction to the given MIPS single cycle data-path:…

A: According to the question, for the given MIPS operation, we need to find the condition of the…

Q: Explain in detail, Synchronous motor as a synchronous condenser.

A: A synchronous motor when over excited can supply reactive power to the system. Sometimes synchronous…

Q: A 3Ø, Y-connected alternator is rated at 1,600KVA, 13.5KV. The armature effective AC resistance per…

A: Given VL =13500 V Ra =1.5 Ω let Xs =synchronous reactance load power =1280 W at unit power factor

Q: A 1200 kW,60 Hz synchronous alternator A identical governor droop of 0.0005 Hz/kW.Machine A takes…

Q: The reactance’s of the alternator during the periods of the subtransient, transient and steady…

A: According to question: Transient reactance is calculated as…

Q: What is the boolean expression for the logic gate in the picture?

A: The given circuit is

Q: ii)Conduct suitable tests to measure the copper loss occurs in a three phase Induction Motor.

A: Hello. Since you have posted multiple questions and not specified which question needs to be solved,…

Q: A 3-phase induction motor is wound for 2 poles and is supplied from a 50-Hz system. Calculate (I)…

A: Given data, The value of number of poles is P = 2. The value of frequency is f = 50 Hz. The value…

Q: Consider a single phase synchronous machine of cylindrical rotor type. A single phase supply is…

A: The solution is provided in the following section:

Q: How to adjust reactive power in synchronous machine? A) by changing the load applied to the shaft…

A: It is known that a synchronous generator, will deliver reactive power when Efcosδ>V…

Q: A 2,400 Volts, 2.5MVA, three-phase operates at rated Kilovolt-Ampere at a power factor of 85%. The…

A: Given: A 2,400 Volts, 2.5MVA, three-phase operates at rated Kilovolt-Ampere at a power factor of…

Q: a) b) The value of excitation current required for full load current at 0.7 pf lagging…

A: Synchronous generator converts mechanical energy to electrical energy. The OCC curve is drawn…

Q: Explain the improvement of transient stability by using turbine fast valving method) (i need…

A: Transient Stability: It is the ability of a power system which helps to experience a sudden change…

Q: . List the different types of stray load losses in an induction motor.

Question

Q/ A 4-pole, 400V, 3-phase, 50Hz induction motor runs at 1440 r.p.m. at 0.8 p.f. lag and delivers an output of 10.8KW. The stator loss is 1060W and friction, windage etc. losses are 300W. Calculate:
(i) Slip.
(ii) rotor copper loss.
(iii) rotor frequency.
(iv) line current.

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step by step

Solved in 2 steps with 2 images

SEE SOLUTION Check out a sample Q&A here

Similar questions

A 1200 kVA, 6600 volts, three-phase wye connected alternator, has an effectiveresistance of 2.5 ohms and a reactance of 12 ohms per phase. Determine the inducedemf and the torque developed by the armature when fully loaded at 0.8 leading power factor.
The series field winding of a 170 kW, 250 V, 1450 rpm compound generator has a resistance of 0.00306 ohm. What will be the required resistance (in Ohm) of a noninductive diverter that will bypass 27 percent of the total armature current? "
Discuss the behaviour of an induction motor when it is rotating at synchronous speed.
None
Q2 Complete the answer : The rotor reactance of the three phase induction motor is varies with ................... of the rotor current.
Mention the techniques used to start 1-Φ induction motor.
A 3-phase, 60 Hz induction motor has two poles. If the slip is 2% at a certain load, determine the synchronous speed, the speed of the rotor and the frequency of the induced e.m.f.'s in the rotor.
An 8-pole wave wound dc shunt generator is supplying 295 A to load. The field current of generator is 5A. The current parallel path is
With the aid of diagrams describe the basic topology of a wound field 3 phase synchronous generator and outline the relationship between the excitation voltage and rotor current. Q2 (a) (b) Outline with the aid of a suitable diagram the necessary power conversion stages required to interface a small permanent magnet (PM) generator to a stand alone DC system. A star connected 3 phase wound field synchronous generator with a synchronous reactance of 20 N is connected to a 6.6 kV (phase voltage) grid and supplies 1.5 MW at 0.95 lagging power factor at its terminals. Calculate the phase current and resultant voltage across the synchronous reactance (Vxs), and from a scaled phasor diagram graphically determine the required excitation voltage (Eph) and load angle (8). (c) The load is now increased to 3 MW with the Excitation Voltage kept constant. Using the phasor diagram drawn in part (c) graphically determine the resultant phase current, power factor and load angle. (d)
Choose the correct option does not have self-starting torque DC Motor EMF due to Mutual inductance Choose... DC Motor Generated EMF DC Generator Back EMF Transformer EMF due to rotating magnetic field Single phase system Three phase induction motor
State the types of induction motor
Please it ASAP for an upvote.