Mechanical Engineering MCQs

Page No. 95

At low temperatures (say 75°C) the notched-bar impact value of steel____________________?


aincreases markedly


bdecreases markedly


cremains same


ddepends on heat treatment carried out


View Answer decreases markedly

For steel, the ultimate strength in shear as compared to ultimate strength in tension is ___________________?


asame


b1/2


c1/3


d2/3


View Answer 2/3

Resistance to fatigue of a material is measured by________________?


aYoung’s modulus


bcoefficient of elasticity


celastic limit


dendurance limit


View Answer endurance limit

The ratio of endurance limit in shear to the endurance limit in flexure is__________________________?


a0.33


b0.4


c0.5


d0.55


View Answer 0.55

Residual stress in materials_________________?


aacts when external load is applied


bbecomes zero when external load is removed


cis independent of external loads


dis always harmful



Cold working________________?


aincreases the fatigue strength


bdecreases the fatigue strength


chas no influence on fatigue strength


dalone has no influence on fatigue strength



In nitrated parts, the origins of the fatigue cracks will occur at__________________?


asurface


bjust below the surface


cwithin the core


dnone of the above


View Answer none of the above

Which process will increase the fatigue duration of parts ?


afinishing and polishing


bshot-peening


cdecarburisation


delectroplating


View Answer shot-peening

The building up of worn and uridersized parts, subjected to repeated loads by electroplating is_____________________?


abest method


bextremely hazardous


chas no effect as regards fatigue strength


dcheapest method


View Answer best method

Yield point in fatigue loading as compared to static loading is__________________?


asame


bhigher


clower


ddepends on other factors


View Answer lower

Goto Page No.

Page 95 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