Mechanical Engineering MCQs

Page No. 156

Cork is a good insulator because it has___________________?


afree electrons

✖


batoms colliding frequency

✖


clow density

✖


dporous body

✓


View Answer porous body

Metals are good conductors of heat because________________?


atheir atoms collide frequently

✓


btheir atoms-are relatively far apart

✖


cthey contain free electrons

✖


dthey have high density

✖



Temperature of steam at around 540°C can be measured by ____________________?


athermometer

✖


bradiatiouv pyrometer

✖


cthermistor

✖


dthermocouple

✓


View Answer thermocouple

Thermal conductivity of water in general with rise in temperature ____________________?


aincreases

✖


bdecreases

✖


cremains constant

✖


dmay increase or decrease depending on temperature

✓



Which of the following is a case of steady state heat transfer ___________________?


aI.C. engine

✖


bair preheaters

✖


cheating of building in winter

✖


dnone of the above

✓


View Answer none of the above

Which of the following is the case of heat transfer by radiation ___________________?


ablast furnace

✖


bheating of building

✖


ccooling of parts in furnace

✖


dheat received by a person from fireplace

✓



Heat flowing from one side to other depends directly on ___________________? Pick up the wrong case?


aface area

✖


btime

✖


cthickness

✓


dtemperature difference

✖


View Answer thickness

Sensible heat is the heat required to __________________?


achange vapour into liquid

✖


bchange liquid into vapour

✖


cincrease the temperature of a liquid of vapour

✓


dconvert water into steam and superheat it

✖



Thermal conductivity of solid metals with rise in temperature normally___________________?


aincreases

✖


bdecreases

✓


cremains constant

✖


dmay increase or decrease depending on temperature

✖


View Answer decreases

When heat is transferred from one particle of hot body to another by actual motion of the heated particles, it is referred to as heat transfer by ___________________?


aconduction

✓


bconvection

✖


cradiation

✖


dconduction and convection

✖


View Answer conduction

Goto Page No.

Page 156 of 190

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