Mechanical Engineering MCQs

Page No. 24

In an immersed body, centre of pressure is __________________?


aat the centre of gravity


babove the centre of gravity


cbelow be centre of gravity


dcould be above or below e.g. depend¬ing on density of body and liquid



Gradually varied flow is__________________?


asteady uniform


bnon-steady non-uniform


cnon-steady uniform


dsteady non-uniform


View Answer steady non-uniform

The flow which neglects changes in a transverse direction is known as_________________?


aone dimensional flow


buniform flow


csteady flow


dturbulent flow


View Answer one dimensional flow

A piece of wood having weight 5 kg floats in water with 60% of its volume under the liquid. The specific gravity of wood is _________________?


a0.83


b0.6


c0.4


d0.3


View Answer 0.6

Uniform flow occurs when_____________________?


athe direction and magnitude of the velocity at all points are identical


bthe velocity of successive fluid paiticles, at any point, is the same at successive periods of time


cthe magnitude and direction of the velocity do not change from point to point in the fluid


dthe fluid particles move in plane or parallel planes and the streamline pat-terns are identical in each pleasure



At the center line of a pipe flowing under pressure where the velocity gradient is zero, the shear stress will be_________________?


aminimum


bmaximum


czero


dcould be any value


View Answer could be any value

Two pipe systems can be said to be equivalent, when the following quantities are same__________________?


afriction loss and flow


blength and diameter


cflow and length


dfriction factor and diameter



For similarity, in addition to models being geometrically similar to prototype, the following in both cases should also be equal____________________?


aratio of inertial force to force due to viscosity


bratio of inertial force to force due to gravitation


cratio of inertial force to force due to surface tension


dall the four ratios of inertial force to force due to viscosity, gravitation, sur-face tension, and elasticity



Cavitation will begin when__________________?


athe pressure at any location reaches an absolute pressure equal to the saturated vapour pressure of the liquid


bpressure becomes more than critical pressure


cflow is increased


dpressure is increased



A hydraulic press has a ram of 15 cm diameter and plunger of 1.5 cm. It is required to lift a weight of 1 tonne. The force required on plunger is equal to_________________?


a10 kg


b100 kg


c1000 kg


d1 kg


View Answer 10 kg

Goto Page No.

Page 24 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