Mechanical Engineering MCQs

Page No. 170

For small discharge at high pressure, following pump is preferred_____________________?


acentrifugal


baxial flow


cmixed flow


dreciprocating


View Answer reciprocating

Low specific speed of a pump implies it is____________________?


acentrifugal pump


bmixed flow pump


caxial flow pump


dany one of the above


View Answer centrifugal pump

In a centrifugal pump, the liquid enters the pump__________________?


aat the top


bat the bottom


cat the center


dfrom sides


View Answer at the center

In centrifugal pumps, maximum efficiency is obtained when the blades are_________________?


astraight


bbent forward


cbent backward


dradial


View Answer bent backward

The optimum value of vane exit angle for a centrifugal pump impeller is_________________?


a10-15°


b20-25°


c30-40°


d50-60°


View Answer 20-25°

If a pump is handling water and is discharging a certain flow Q at a constant total dynamic head requiring a definite B.H.P., the same pump when handling a liquid of specific gravity 0.75 and viscosity nearly same as of water would discharge_____________________?


asame quantity of liquid


b0.75 Q


cQ/0.75


d1.5 Q



When a piping system is made up primarily of friction head and very little of vertical lift, then pump characteristics should be__________________?


ahorizontal


bnearly horizontal


csteep


dfirst rise and then fall


View Answer nearly horizontal

The efficiency of a centrifugal pump is maximum when its blades are__________________?


astraight


bbent forward


cbent backward


dbent forward first and then backward


View Answer bent backward

Reciprocating pumps are no more to be seen in industrial applications (in comparison to centrifugal pumps) because of____________________?


ahigh initial and maintenance cost


blower discharge


clower speed of operation


dnecessity of air vessel



In a centrifugal pump casing, the flow of water leaving the_______________?


aradial


bcentrifugal


crectilinear


dvortex


View Answer vortex

Goto Page No.

Page 170 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