Mechanical Engineering MCQs

Page No. 166

Low specific speed of turbine implies it is__________________?


apropeller turbine

✖


bFrancis turbine

✖


cimpulse turbine

✓


dany one of the above

✖


View Answer impulse turbine

Runaway speed of a hydraulic turbine is_________________?


afull load speed

✖


bthe speed at which turbine runner will be damaged

✖


cthe speed if the turbine runner is allowed to revolve freely without load and with the wicket gates wide open

✓


dthe speed corresponding to maximum overload permissible

✖



Medium specific speea of turbine implies it is___________________?


apropeller turbine

✖


bFrancis turbine

✓


cimpulse turbine

✖


dany one of the above

✖


View Answer Francis turbine

The specific speed of turbine is defined as the speed of a unit___________________?


aof such a size that it delivers unit dis-charge at unit head

✖


bof such a size that it delivers unit dis-charge at unit power

✖


cof such a size that it requires unit power per unit head

✖


dof such a size that it produces unit horse power with unit head

✓



A turbine pump is basically a centrifugal pump equipped additionally with_________________?


aadjustable blades

✖


bbackward curved blades

✖


cvaned diffusion casing

✓


dinlet guide blades

✖



In reaction turbine, draft tube is used_____________________?


ato transport water downstream without eddies

✖


bto convert the kinetic energy to flow energy by a gradual expansion of the flow cross-section

✓


cfor safety of turbine

✖


dto increase flow rate

✖



Impulse turbine is generally fitted______________________?


aat the level of tail race

✖


blittle above the tail race

✓


cslightly below the tail race

✖


dabout 2.5 m above the tail race to avoid cavitation

✖



Francis turbine is best suited for_____________________?


amedium head application from 24 to 180 m

✓


blow head installation up to 30 m

✖


chigh head installation above 180 m

✖


dall types of heads

✖



Francis, Kaplan and propeller turbines fall under the category of___________________?


aImpulse turbines

✖


bReaction turbines

✓


cAxial flow turbines

✖


dMixed flow turbines

✖


View Answer Reaction turbines

The discharge through a reaction turbine with increase in unit speed____________________?


aincreases

✖


bdecreases

✓


cremains unaffected

✖


dfirst increases and then decreases

✖


View Answer decreases

Goto Page No.

Page 166 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