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