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 16 of 39

Q151.
A flow is called hyper-sonic, if the Mach number is
Discuss
Answer: (d).none of these
Q152.
The power absorbed (in watts) in overcoming the viscous resistance of a footstep bearing is
Discuss
Answer: (b).μ π³ N² R⁴ /1800 t
Discuss
Answer: (b).directly proportional to the depth of liquid from the surface
Q154.
If the depth of water in an open channel is greater than the critical depth, the flow is called
Discuss
Answer: (c).tranquil flow
Q155.
A submerged body is said to be in a stable equilibrium, if its centre of gravity __________ the centre of buoyancy.
Discuss
Answer: (b).lies below
Q156.
The critical depth for a channel is given by (where q = Unit discharge (discharge per unit width) through the channel)
Discuss
Answer: (b).(q²/g)1/3
Q157.
The liquid used in manometers should have
Discuss
Answer: (d).high surface tension
Discuss
Answer: (a).area of flow and wetted perimeter
Q159.
The imaginary line drawn in the fluid in such a way that the tangent to any point gives the direction of motion at that point, is known as
Discuss
Answer: (b).stream line
Q160.
A hemispherical tank of radius (R) has an orifice of cross-sectional area (a) at its bottom and is full of liquid. The time required to empty the tank completely is
Discuss
Answer: (c).14π R5/2/15Cd × a √(2g)