Find theflux per pole(B)-Indicate whether the following statements are [true) or (false) and correct the falsestatementsEguftaIf=t1- The armature voltage of d.c series generator is affected by field current2- It is possible to obtain speed of a d.c shunt motor above normal by armature voltagecontrolyif the supply frequency in a transformer is doubled .iron loss also doubled.4- The speed of d.c series motor is decreased if the armature current is decreased. F5- Two transformer are operating in parallel, their load sharing will denend upon per unitimpedance2866.624 263 + 7338-5.58 11410 marks)

As per bartleby guideline for more than three subpart only first three are to be answered please…

(B)-Indicate whether the following statements are [true] or [false) and correct the false statements Egufta fr 1- The armature voltage of d.c series generator is affected by field current 2- It is possible to obtain speed of a d.c shunt motor above normal by armature voltage control if the supply frequency in a transformer is doubled .iron loss also doubled. The speed of d.c series motor is decreased if the armatura ur

(B)-Indicate whether the following statements are [true] or [false) and correct the false statements Egufta fr 1- The armature voltage of d.c series generator is affected by field current 2- It is possible to obtain speed of a d.c shunt motor above normal by armature voltage control if the supply frequency in a transformer is doubled .iron loss also doubled. The speed of d.c series motor is decreased if the armatura ur

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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Q13-Explain briefly the following questions 1- What is the purpose of laminating the core in a transformer? 2- What two important effects are produced by armature reaction? 4- What are the differences between the components of a dc generator and a dc motor? 5-How to solve the Commutation Problem in d.c machines 6-List the various methods of flux control for d.c series motors, and draw a neat diagram of one method
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K-1)The speed of a 3-phase wound-rotor induction motor can be changed by varying the amount of resistance in the rotor circuit. a) true b) false K-2). Which of the following statements are true about a 3-phase synchronous motor? a) It is a constant speed motor even under varying loads. b) It runs at the same speed the magnetic field rotates on the stator. c) It can correct its own, and the supply line's power factor d) all of the above K-3. A) What determines the speed of a 3-phase synchronous motor? a) the number of poles b) the frequency of the supply c) both "a" and "b" d) neither "a" nor "b" K-3)B) From a technician's standpoint, which of the following is the most practical method of providing a wide range of speed control for a 3-phase synchronous motor? a) by changing the frequency b) by changing the number of poles c) both "a" and "b" d) neither "a" nor "b"
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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
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B)- Indicate whether the following statements are true or false and correct the false statements 508 1- In d.c. generator, the neutral plane shifts in opposite the direction of rotation 2-Inno-load test of single-phase transformer the oscilloscope will show that the phase shift between V& I is less than 90' and it is about (70° -80°) 3-The armature torque of the de shunt motor is proportional to field flux only 4-To solve the Commutation Problem in small machines, this can be achieved by increasing the pole pitch 140 12