Electrical Engineering MCQs

Page No. 146

In a domestic cake baking oven the temperature is controlled by________________?


a voltage variation

✖


bthermostat

✖


cauto-transformer

✖


dseries-parallel operation

✓



Due to which of the following reasons it is desirable to have short arc length ?


aTo achieve better heating

✖


bTo increase the life of roof refractory

✖


cTo have better stirring action

✖


dAll of the above

✓


View Answer All of the above

In an electric press mica is used_____________?


aas an insulator

✓


bas a device for power factor improvement

✖


c for dielectric heating

✖


d for induction heating

✖


View Answer as an insulator

By the use of which of the following, high frequency power supply for induction furnaces can be obtained ?


aCoreless transformers

✖


bCurrent transformers

✖


cMotor-generator set

✓


dMulti-phase transformer

✖


View Answer Motor-generator set

The temperature inside a furnace is usually measured by which of the following ?


aOptical pyrometer

✓


bMercury thermometer

✖


cAlcohol thermometer

✖


dAny of the above

✖


View Answer Optical pyrometer

Which of the following insulating materials was suitable for low temperature applications ?


aAsbestos paper

✖


bDiatomaceous earth

✓


c80 percent magnesia

✖


dCork

✖


View Answer Diatomaceous earth

The material of the heating element for a furnace should have___________?


alower melting point

✖


b higher temperature coefficient

✖


chigh specific resistance

✓


dall of the above

✖



In an electric room heat convector the method of heating used is______________?


aarc heating

✖


b resistance heating

✓


cinduction heating

✖


ddielectric heating

✖


View Answer resistance heating

Induction furnaces are employed for which of the following ?


aHeat treatment of castings

✓


b Heating of insulators

✖


c Melting aluminium

✖


dNone of the above

✖



Which of the following will happen if the thickness of refractory wall of furnace is increased ?


aHeat loss through furnace wall will increase

✖


bTemperature inside the furnace will fall

✖


cTemperature on the outer surface of furnace walls will drop

✓


dEnergy consumption will increase

✖



Goto Page No.

Page 146 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