Discuss by your own words (You can use Arabic) without copy – paste from internet the followingclaimed arguments:|Similar answers will be badly evaluated]1- The current drawn by a 3-ph synchronous motor decreases as the leading power factor of thismotor increases when this motor is used to improve the power factor in a certain factory.2- If the magnitude of the voltage between two points in a certain transmission line is equal, then nocurrent will pass between these two points.3- The power loss in a conductor that has large diameter with respect to another conductor increasesas its length increases.4- If the capacitance between two conductors of a three phase transmission line is 8 micofarad, thenthe capacitance of each conductor of the three conductors to the neutral is 4 microfarad.

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Discuss by your own words (You can use Arabic) without copy – paste from internet the following claimed arguments:|Similar answers will be badly evaluated] 1- The current drawn by a 3-ph synchronous motor decreases as the leading power factor of this motor increases when this motor is used to improve the power factor in a certain factory. If the omitudo of the uolt

Discuss by your own words (You can use Arabic) without copy – paste from internet the following claimed arguments:|Similar answers will be badly evaluated] 1- The current drawn by a 3-ph synchronous motor decreases as the leading power factor of this motor increases when this motor is used to improve the power factor in a certain factory. If the omitudo of the uolt

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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3. A 400V, 3¢, star connected synchronous motor has an armature resistance of 0.20 and synchronous reactance of 2 2 per phase. While driving a particular load, the motor takes 25A from the supply. Calculate the back emf induced in the motor if it is working with power factor of a) 0.8 Lagging b) 0.9 leading c) Unity
- What are the main parts of an single phase induction motor?Explain the function of each. - Explain the function of Ballast and Starter in the discharge lamp?! - Can we connect a 10A load to domestic socket outlet? Justify your answer. - Which type of MCB is used in motor control and why this type of MCB is chosen over other types?
7
A decrease in the field current of a synchronous motor results in: O A. Power factor of the machine will increase O B. Decreasing the induced voltage; motor will absorb more reactive power O C. No change in the induced voltage O D. Increasing the induced voltage; motor will absorb more reactive power O E. None of the other choices are correct
- Three phase induction motor has rating of 50 kW, 960 rpm, 400 V. 50 Hz, 6-pole. The motor parameters are Rs = 0.08 , R = 0.1 02, X, = X = 0.3 2 and the moment of inertia 10 kg m². It is required to stop the motor from its no load speed under reverse breaking operation. Find the required value of external resistance that need to put in rotor circuit such way that breaking will be achieved with minimum time. What is breaking time.
Differential compound motors are preferred to use for elevators True False
b) A 415V, 50HZ, 3-phase induction motor supplies its rated power to a constant load. The rated speed of the motor is 980 rpm. Identify the pole number of the motor and calculate the rate slip () (ii) Draw the circuits for the no-load and block-rotor tests and indicate the slip for each of the tests. (iii) If the supply voltage is changed to 332V and 40HZ, calculate the motor speed, slip frequency, and slip.
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