Electrical Engineering MCQs

Page No. 170

The attraction capacity of electromagnet will increase if the_______________?


acore length increases i


bcore area increases


cflux density decreases


d flux density increases



The susceptibility of paramagnetic materials generally lies between____________?


aKT3 and 1CT6


b1CT3 and 1CT7


cKT4 and KT8


d10″2 and KT5


View Answer KT3 and 1CT6

Temporary magnets are used in______________?


aloud-speakers


bgenerators


cmotors


dall of the above


View Answer all of the above

For which of the following materials the net magnetic moment should be zero ?


aDiamagnetic materials


bFerrimagnetic materials


cAntiferromagnetic materials


d Antiferrimagnetic materials



Which of the following statements is correct ?


aThe conductivity of ferrites is better than ferromagnetic materials


bThe conductivity of ferromagnetic materials is better than ferrites


cThe conductivity of ferrites is very high


dThe conductivity of ferrites is same as that of ferromagnetic materials



Core of an electromagnet should have____________?


alow coercivity


bhigh susceptibility


cboth of the above


dnone of the above


View Answer both of the above

Main causes of noisy solenoid are______________?


astrong tendency of fan out of laminations at the end caused by repulsion among magnetic lines of force


buneven bearing surface, caused by dirt or uneven wear between moving and stationary parts


cboth of above


dnone of the above


View Answer both of above

Magnetism of a magnet can be destroyed by_____________?


aheating


bhammering


cby inductive action of another magnet


dby all above methods


View Answer by all above methods

Which of the following methods may be used to convert A.C. system to D.C ?


aRectifiers


b Motor converters


cMotor-generator sets


dAll of the above


View Answer All of the above

A synchronous converter can be started______________?


aby means of a small auxiliary motor


bfrom AC. side as induction motor


cfrom D.C. side as D.C. motor


dany of the above methods



Goto Page No.

Page 170 of 366

Alphabetical MCQs Categories

Here below You find all kind of categories of MCQs in alphabetical order.


"Comprehensive Collection of MCQs: Alphabetically Organized by Subject"

"Discover an extensive collection of multiple-choice questions (MCQs) neatly categorized by subject from A to Z. This resource is designed for anyone eager to explore various topics in a straightforward and organized manner. Whether you're a student preparing for exams, an educator seeking supplementary materials, or simply curious about different subjects, this compilation offers a convenient way to learn and assess your knowledge. With questions arranged alphabetically, navigation is effortless, allowing you to delve into subjects of interest at your own pace. Engage, learn, and expand your understanding with this accessible and comprehensive repository of MCQs!"


BolPakistan

bolpakistan.com.pk includes Job Mcqs and Pak Mcqs is the Top Largest Mcqs Forum in World, in which you can read Mcqs of All Subjects, PPSC test preparation, FPSC, NTS and PPSC PAST PAPERS, PPSC PAST MCQS. A Collection of Repeated MCQs for JOBs seekers.

Copyright © 2024, Designed & Developed by BolPakistan