Mechanical Engineering MCQs

Page No. 10

Boiler stays are used to___________________?


aprevent flat surfaces under pressure from tearing apart


btake care of failure in shear


ctake care of failure in compression


dprovide support for boiler



Which type of boiler can meet rapid changes of load____________________?


avertical fire tube type


bhorizontal fire tube type


chorizontal water tube type


dforced circulation type



It is required to produce large amount of steam at low pressure. Which boiler should be used ?


apulverised fuel fired boiler


bcochran boiler


clancashire boiler


dbabcock and wilcox boiler


View Answer lancashire boiler

Steam in water tube boiler as compared to fire tube boiler_________________?


acan be raised rapidly


bis raisd at slower rate


cis raised at same rate


dcould be raised at fast/slow rate depending on design


View Answer can be raised rapidly

In accelerated circulation type boiler________________?


aheating takes place at bottom and the water supplied at bottom gets converted into the mixture of stdam bubbles and hot water which rise to durm


bwater is supplied in drum and through downcomers” located in atmospheric conditon it passes to the water wall and rises to durm in the from of mixture of water and steam


cfeed pump is employed to supplement natural circulation in water wall type furnace


dwater is converted into steam in one pass without any recirculation



In forced recirculation type boiler__________________?


aheating takes place at bottom and the water supplied at bottom gets converted into the mixture of steam bubbles and hot water which rise to drum


bwater is supplied in drum and through down-comers located in atmospheric condition it passes to the water wall and rises to drum in the form of mixture of water and steam


cfeed pump is employed to supplement natural circulation in water wall type furnace


dwater is converted into steam in one pass without any recirculation



Fusible plug for boilers is made of fusible metal containing tin, lead, and___________________?


abismuth


bcopper


caluminium


dnickel


View Answer bismuth

Pick up the wrong statement about water tube boiler in comparison to fire tube boilers ______________________?


aformer generates steam at high pressure


bformer occupies less space for same power


crate of steam flow is more in former case


dchances of explosion are less in former case



A fusible plug is fitted in small boilers in order to ___________________?


aavoid excessive build up of pressure


bavoid explosion


cextinguish fire if water level in the boiler falls below alarming limit


dcontrol steam dome



Thermal efficiency of well maintained boiler will be of the order___________________?


a20%


b40%


c50%


d90%


View Answer 90%

Goto Page No.

Page 10 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