Mechanical Engineering MCQs

Page No. 19

On Mollier chart, free expansion, or throttling process from high pressure to atmosphere is represented by_______________?


ahorizontal straight line

✓


bvertical straight line

✖


cstraight inclined line

✖


dcurved line

✖



A wet vapour can be completely specified by__________________?


apressure only

✖


btemperature only

✖


cdryness fraction only

✖


dpressure and dryness fraction

✓



The specific heat of superheated steam in kcal/kg is generally of the order of___________________?


a0.1

✖


b0.3

✖


c0.5

✓


d0.8

✖


View Answer 0.5

One kg of steam sample contains 0.8 kg dry steam; it’s dryness fraction is__________________?


a0.2

✖


b0.8

✓


c1.0

✖


d0.6

✖


View Answer 0.8

Sublimation region is the region where__________________?


asolid and vapour phases are in equi-librium

✓


bsolid and liquid phases are in equilibrium

✖


cliquid and vapour phases are in equilibrium

✖


dsolid, liquid and vapour phases are in equilibrium

✖



The equivalent evaporation of a boiler is a measure to compare _________________?


athe given boiler with the model

✖


bthe two different boilers of the same make

✖


ctwo different makes of boilers operat¬ing under the same operating conditions

✖


dany type of boilers operating under any conditions

✓



Equivalent evaporation is the amount of water evaporated in a boiler from and at ____________________?


a0°C

✖


b100°C

✓


csaturation temperature at given pressure

✖


droom temperature

✖


View Answer 100°C

1 kg.m is equal to_________________?


a9.81 Joules

✓


bAll Joules

✖


c427 Joules

✖


d102 Joules

✖


View Answer 9.81 Joules

Coke is produced by__________________?


apulverising coal in inert atmosphere

✖


bheating wood in a limited supply of air at temperatures below 300GC

✖


cstrongly heating coal continuously for about 48 hours in the absence of air in a closed vessel

✓


dbinding the pulverised coal into brick-etts

✖



The critical pressure at which latent heat of vaporisation is zero is________________?


a225.65 kgf/cm2

✓


b273 kgf/cm2

✖


c100 kgf/cm2

✖


d1 kgf/cm2

✖


View Answer 225.65 kgf/cm2

Goto Page No.

Page 19 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