B/ Fill in the blanks: 1- In a three-phase induction motor iron losses in stator will be .. that in rotor. 2- In three-phase induction motors sometimes copper bars are placed deep in the rotor to.... 3- Blocked rotor test on induction motors is used to find out. B..., Rre, K. 4- The maximum torque in an induction motor depends onV..., ...and... ..... .....

B/ Fill in the blanks: 1- In a three-phase induction motor iron losses in stator will be .. that in rotor. 2- In three-phase induction motors sometimes copper bars are placed deep in the rotor to.... 3- Blocked rotor test on induction motors is used to find out. B..., Rre, K. 4- The maximum torque in an induction motor depends onV..., ...and... ..... .....

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

Similar questions

1.why the slip of induction motor is never zero, 2.what happens if the slip of induction motor is one, 3.what is the value of the slip for an induction motor at on load and full load
An 8-pole dc generator has a duplex lap wound armature with 64 coils and 16 turns per coil. The resistance of this winding is 0.015 ohms per turn. Find the armature resistance.
¸A 440-V 50-Hz, 50-hp, a three-phase induction motor is drawing 50 A at 0.75 PF lagging. The rotor copper losses are 500 W. The friction and windage losses are 400 W, the core losses are 1600 W, and the stray losses are 350 W, and the efficiency is 82%. Find: 1. The air-gap power. 2. The stator copper losses.
A three-phase, 460 V, 98hp 1,60 Hz, four-pole induction machine delivers rated output power at a slip of 0.05. Determine: (i) The synchonous speed. (V) speed at half Load (ii) The motor speed. (iii) The rotor frequency. (iv) The slip speed. ...A... -
a. Qualitatively describe the magnetic field set up in the air gap of a four-pole three-phase induction motor by the currents in the stator windings. b. Give an equation for the field intensity as a function of angular position around the gap and time, defining the terms in your equation.
a) Briefly explain basic operating principle of an induction motor.
1. A fundamental DC motor is shown below. VTerminal = 90V. The running current, I = 5A and the rotor resistance, R = 4 ohms. Answer the following: CEMF or E at the running condition = , Power delivered by the source at the running condition = Power converted to mechanical power at the running condition Power lost in heat by the rotor resistance = Show your work for each calculation. Suggest that you clearly mark the schematic. frut
(a) A standard 3-phase, 10-pole, squirrel-cage induction motor is rated at 460 V, 50 Hz. We want the motor to run at a no-load speed of about 300 r/min while maintaining the same flux in the air gap. Calculate the voltage and frequency to be applied to the stator.
List the different types of stray load losses in an induction motor.
1-What is the effect of load on the efficiency of an induction motor?
A series DC motor has a series-field winding of 25 turns per pole. Its armature resistance is 0.15 0. and its field resistance is 0.05 0. When the motor is rotating at 900 RPM, with a 380 V DC supply, its current is 142 A, and rotational losses of 4500 Watt. Find the copper losses and the efficiency of this motor. Answers: Pcu = Watt, and %n %.
I need the answer as soon as possible