Q1/ the results of no-load test of 3-phase IM was 315w,380V, 4.2A and of the short circuit was 1510W, 80V, 14A.find from AEC the load current at rated slip of 8% andefficiency, (the stator winding resistance is 75% rotorresistance.)Q2/ A 3-phase,440V, 4-pole, 50HZ, IM, has a star connectedwinding requires 19.68A at full load slip of 3% and 0.8 powerfactor. Find the iron losses, output horse power and the efficiency.If the no-load power is 1200w and no-load current is 6A and Pâyis 300w, R1 is 0.82/phase. Use EEC.

Given Data; 3-Phase Induction Motor, No -Load Test; Po=315 W Vo=380 V Io=4.2 A Short Circuit Test;…

Q1/ the results of no-load test of 3-phase IM was 315w, 380V, 4.2A and of the short circuit was 1510W, 80V, 14A. find from AEC the load current at rated slip of 8% and efficiency, (the stator winding resistance is 75% rotor resistance.)

Q1/ the results of no-load test of 3-phase IM was 315w, 380V, 4.2A and of the short circuit was 1510W, 80V, 14A. find from AEC the load current at rated slip of 8% and efficiency, (the stator winding resistance is 75% rotor resistance.)

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 compound generator is to Supply aLodd.of 250lamps eack raded at 1ooW, 25ON.Cine.armature, series…

A: A compound generator has, Terminal voltage Vt= 250 V Load has 250 lapms and each lamp rated at 100…

Q: Two D.C shunt generations running in parallel supply s total load current of 125 A. The shunt field…

Q: Discuss the following terms (i) Double Revolving Theory (ii) Lap…

A: As per our policy i have attempted first three sub-parts. (i) The double-revolving field theory of a…

Q: 5. In a no load test, an induction motor took 10A and 550 watts with a line voltage of 200V.If…

A: Given Stator resistance =R1 =0.05 Ω No load current =I0=10 A applied line voltage = 200 V Hence per…

Q: Difference between dc series vs shunt machine... Only difference...

A: A DC machine is an energy-altering electromechanical device. When electric current travels through a…

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: The reactance's of the alternator during the periods of the subtransient, transient and steady state…

A: As damper winding time constant is very less so damper winding is out of circuit at the end of the…

Q: F (A, B, C, D) = Σ (4, 5, 10, 11, 12, 13) Draw using a minimum number of NMOS and PMOS.

Q: II. 2. If the RMS value of the stator phase voltage is unchanged but the slip decreases from 1 to 0,…

A: RMS (Root mean square) value : It can be elaborated as square root of average(mean) value of squared…

Q: (15) Two identical 3-phase, 500-V induction machines are mechanically coupled for a back-to-back…

A: Given: Two identical 3-phase, 500-V induction machines are mechanically coupled for a back-to-back…

Q: A short shunt compound DC generator supplies a load current of 10A at a voltage of 10 volts. If the…

A: Given: A short shunt compound DC generator in which IL=10AV=10VRa=0.001ΩRsh=1ΩRse=0.00Ω

Q: 2, the shunt field resistance is 200 2 and there is a brush contact voltage drop of 1 V at each…

Q: 1. In DC series generator field winding and armature winding are connected parallelly. Select one:…

A: Field winding is used to produce the required flux in self excited motors.

Q: 4. A short shunt compound generator supplies 100A at 110V. Armature resistance is 0.0502 and the…

Q: In a lap winding dc machine number of conductors are 100 and number of parallel paths are 10. Find…

A: Given, A lap winding dc machine with, Total number of conductors, Z=100. Total number of parallel…

Q: Example 2: a 3-phase SM its armature resistance is 0.50 and syn. Reactance is 0.86692/phase. The…

Q: 0.07 ohm, respectively. In order to make the generator flat-compound, so that it will have a no-load…

A: Given 10kW 250V compound generator No load voltage 230V Shunt field has 800 turns per pole And…

Q: Three shunt generators operating in parallel are supplying a total load of 1750 A. Each machine has…

Q: Explain the operation of three phase induction machine. (Not too long). Define slip.

A: A three phase induction motor has a stator and a rotor. The stator carries a 3-phase winding called…

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. Explain the terms, coil span, coil pitch, short pitching and chording of coils. b. Equalizer…

A: a) Coil span: A coil is made of a single turn or multi turns of a conductor. Each side of a…

Q: The rating of a 3 phase synchronous generator is given as 2 MVA, 4400 V, 60 Hz. If the synchronous…

A: It is given that:- S = 2 MVAVL = 4400 Vf = 60 HzXs=2.6 Ohmra =?

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: A 10kW,250V d.c.,6-pole shunt generator runs at 1000 r.p.m. when delivering full-load. The armature…

Q: A 6-pole, lap-wound, DC generator has a useful flux per pole of 0.08 Wb. The armature winding…

Q: In alternator armature winding why we prefer: a- short pitch winding w.r.t. full pitch winding? b-…

A: 1. Short pitch winding is used w.r.t full pitch winding in the alternator. Short pitch winding is…

Q: Explain the conditions for parallel operation of synchronous generators. A three phase, wye…

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

Q: An 8 pole, lap-wound armature has 1200 conductors and a flux pole is 0.06wb. Determine the e.m.f…

A: Number of poles poles P = 8 Number of conductors Z = 1200 Flux per pole Φ = 0.06 wb Speed…

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 20 kW COMPOUND GENERATOR WORKS ON FULL LOAD WITH TERMINAL VOLTAGE OF 250V. THE ARMATURE, SERIES…

Q: Q#3: In the 3-phase synchronous machine we deal with the two power supplies AC and DC. AC supply is…

Concept explainers

Winding and Constructions

Alternating Current (AC) winding is generally of the 3-phase type due to the inherent advantages of the 3-phase machine. Armature coils must be connected to the yield balance (equivalent in magnitude and 2/3 of the series phase difference of the rod) 3-phase electromotive forces (emf). The armature should be divided into step-bands to start with slots around the perimeter.In the construction of AC machines, the frame is used as an external protective shield to protect it from environmental conditions. The frame also serves as the outer perimeter, allowing the interior to be easily placed. The static state section of the devices is the stator winding attached stator.

Question

Q1/ the results of no-load test of 3-phase IM was 315w,
380V, 4.2A and of the short circuit was 1510W, 80V, 14A.
find from AEC the load current at rated slip of 8% and
efficiency, (the stator winding resistance is 75% rotor
resistance.)
Q2/ A 3-phase,440V, 4-pole, 50HZ, IM, has a star connected
winding requires 19.68A at full load slip of 3% and 0.8 power
factor. Find the iron losses, output horse power and the efficiency.
If the no-load power is 1200w and no-load current is 6A and Pây
is 300w, R1 is 0.82/phase. Use EEC.

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 Given;

VIEW

Step 2 Solution;

VIEW

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Winding and Construction of the Rotor and Stator

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, electrical-engineering and related others by exploring similar questions and additional content below.

Similar questions

TUTORIAL PROBLEMS 2. A long shunt compound ganerator has full losd output of 100 kW st 250 volts. The armature, series and shunt windings bave rmistances of 0-05 ,0-03 0 and 55 respectively. Find the Brmature current and L A 4 oele shunt gmerstor with wave-wound armature has 41 alots, nch having 12 conductors. Th muture resistance is 0-05 and shunt field resistance is 200 . The flux per poie in 25 mWh. Ifa lond ce of 10 is connected soros the armabure ferminals, calculate the voltage scross the lond w mrior is driven at 1000 rp.m 389-5 V pmented emf 464-5 A, 282-3 V
Define the working of the DC generator with the properly labelled diagrams.
4. List the different types of stray load losses in an inductionmotor.
For a dc generator, the current of the shunt winding is small as compared to armature current true False
In a long shunt DC generator, Shunt winding is parallel with the Series filed winding and Armature winding of the DC generator. Select one: True False
short shunt compound generator delivers a load current of 10A at 200V and has a shunt field resistance 200 ohms. The shunt field current of 2A. Then armature delivers a current of a.10A b.8A c.11A d.12A
Q/ dc shunt generator 4 pole with 500 condcutor , wave running at speed 1000 r.p.m the resistance of armature and field are 0.02 , 55 ohm and delivering load 43.12kwatt at terminal voltage 220 volt, the iron losses is 750 watt 1-Torque developed by the prime mover .........and The torque developed by the armature ........... when running at 1000 r.p.m * 2-The load current ,,,,,,,,,,,,when the speed drops to 800 r.p.m. if If is unchanged ? * 3-Output of the prime motor…….kwatt * 4-Mechanical , electrical and overall efficiency …….. * 5-Flux per pole is......... wb *