Hydraulics and Fluid Mechanics MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Hydraulics and Fluid Mechanics, a fundamental topic in the field of Mechanical Engineering. Whether you're preparing for competitive exams, honing your problem-solving skills, or simply looking to enhance your abilities in this field, our Hydraulics and Fluid Mechanics MCQs are designed to help you grasp the core concepts and excel in solving problems.

In this section, you'll find a wide range of Hydraulics and Fluid Mechanics mcq questions that explore various aspects of Hydraulics and Fluid Mechanics problems. Each MCQ is crafted to challenge your understanding of Hydraulics and Fluid Mechanics principles, enabling you to refine your problem-solving techniques. Whether you're a student aiming to ace Mechanical Engineering tests, a job seeker preparing for interviews, or someone simply interested in sharpening their skills, our Hydraulics and Fluid Mechanics MCQs are your pathway to success in mastering this essential Mechanical Engineering topic.

Note: Each of the following question comes with multiple answer choices. Select the most appropriate option and test your understanding of Hydraulics and Fluid Mechanics. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

So, are you ready to put your Hydraulics and Fluid Mechanics knowledge to the test? Let's get started with our carefully curated MCQs!

Hydraulics and Fluid Mechanics MCQs | Page 14 of 39

Q131.
A piezometer tube is used only for measuring
Discuss
Answer: (c).moderate pressure
Q132.
The flow in a pipe is turbulent when Reynold number is
Discuss
Answer: (c).more than 2800
Q133.
When a tank containing liquid moves with an acceleration in the horizontal direction, then the free surface of the liquid
Discuss
Answer: (c).falls on the front end
Q134.
The most economical section of a rectangular channel is one which has hydraulic mean depth or hydraulic radius equal to
Discuss
Answer: (a).half the depth
Q135.
The ratio of velocity of fluid in an undisturbed stream to the velocity of sound wave is known as Mach number.
Discuss
Answer: (a).Yes
Q136.
The length AB of a pipe ABC in which the liquid is flowing has diameter (d1) and is suddenly contracted to diameter (d2) at B which is constant for the length BC. The loss of head due to sudden contraction, assuming coefficient of contraction as 0.62, is
Discuss
Answer: (d).0.375 v₂²/2g
Q137.
All the gases are considered to have compressible flow and all the liquids are considered to have incompressible flow.
Discuss
Answer: (a).Correct
Q138.
When a cylindrical vessel containing liquid is revolved, the surface of the liquid takes the shape of
Discuss
Answer: (b).a paraboloid
Q139.
When an internal mouthpiece is running free, the discharge through the mouthpiece is (where a = Area of mouthpiece, and H = Height of liquid above the mouthpiece)
Discuss
Answer: (a).0.5 a. √2gH
Q140.
A flow through an expanding tube at increasing rate is called unsteady non-uniform flow.
Discuss
Answer: (a).Yes