Electrical Engineering MCQs

Page No. 212

If a cable of homogeneous insulation has a maximum stress of 10 kV/mm, then the dielectric strength of insulation should be_______________?


a5 kV/mm


b10 kV/mm


c15 kV/mm


d30 kV/mm


View Answer 10 kV/mm

In cables the charging current__________?


a lags the voltage by 90°


b leads the voltage by 90°


clags the voltage by 180°


d leads the voltage by 180°



Solid type cables are considered unreliable beyond 66 kV because___________?


a insulation may melt due to higher temperature


bskin effect dominates on the conductor


cof corona loss between conductor and sheath material


dthere is a danger of breakdown of insulation due to the presence of voids



A certain cable has an insulation of relative permittivity 4. If the insulation is replaced by one of relative permittivity 2, the capacitance of the cable will become_____________?


aone half


bdouble


cfour times


dnone of the above


View Answer one half

Pressure cables are generally not used beyond__________?


a11 kV


b 33 kV


c 66 kV


d132 kV


View Answer 66 kV

The relative permittivity of rubber is____________?


abetween 2 and 3


b between 5 and 6


c between 8 and 10


d between 12 and 14


View Answer between 2 and 3

The material for armouring on cable is usually__________?


asteel tape


b galvanised steel wire


c any of the above


dnone of the above


View Answer any of the above

Conduit pipes are normally used to protect _______ cables


a unsheathed cables


b armoured


c PVC sheathed cables


dall of the above


View Answer unsheathed cables

PVC stands for____________?


apolyvinyl chloride


b post varnish conductor


cpressed and varnished cloth


dpositive voltage conductor


View Answer polyvinyl chloride

In capacitance grading of cables we use a _______ dielectric?


acomposite


b porous


chomogeneous


d hygroscopic


View Answer hygroscopic

Goto Page No.

Page 212 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