Mechanical Engineering MCQs

Page No. 35

The presence of sulphur in pig iron makes__________________?


ait easily machinable


bit brittle


cit hard


dthe casting unsound


View Answer the casting unsound

Compressive strength of grey cast iron in tonnes/cm is of the order of___________________?


a3- 5


b5-7


c7-10


d10-15


View Answer 5-7

Cupola produces following material__________________?


acast iron


bpig iron


cwrought iron


dmalleable iron


View Answer cast iron

The following element can’t impart high strength at elevated temperature__________________?


amanganese


bmagnesium


cnickel


dsilicon


View Answer magnesium

White cast iron__________________?


acontains 1.7 to 3.5% carbon in free state and is obtained by the slow cooling of molten cast iron


bis also known as chilled cast iron and is obtained by cooling rapidly. It is almost unmachinable


cis produced by annealing process. It is soft, tough and easily machined metal


dis produced by small additions of magnesium (or creium) in the ladle. Graphite is in nodular or spheroidal form and is well dispersed throughout the material



Pipes for bicycle frames are made of___________________?


acold rolled steel


bhot rolled steel


cforged steel


dcast steel


View Answer cold rolled steel

Heavy duty leaf and coil spring* contain carbon of the following order ________________?


a0.2%


b0.5%


c0.8%


d1.0%


View Answer 1.0%

Drop forging dies contain carbon of the order of_________________?


a0.1 to 0.2%


b0.25 to 0.5%


c0.6 to 0.7%


d0.7 to 0.9%


View Answer 0.6 to 0.7%

The tensile strength of wrought iron is maximum _________________?


aalong the lines of slag distribution


bperpendicular to lines of slag distribution


cuniform in all directions


dunpredictable



Preheating is essential in welding ___________________?


acast iron


bhigh speed steel


call non-ferrous materials


dall of the above


View Answer cast iron

Goto Page No.

Page 35 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