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 22 of 39

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Q211.
The torque required to overcome viscous resistance of a footstep bearing is (where ฮผ = Viscosity of the oil, N = Speed of the shaft, R = Radius of the shaft, and t = Thickness of the oil film)
Discuss
Answer: (d).ฮผฯ€²NRโด/60t
Discuss
Answer: (a).actual velocity of jet at vena contracta to the theoretical velocity
Q213.
The mass of 2.5 m³ of a certain liquid is 2 tonnes. Its mass density is
Discuss
Answer: (d).800 kg/m³
Q214.
The dynamic viscosity of the liquid __________ with rise in temperature.
Discuss
Answer: (c).decreases
Q215.
When a vertical wall is subjected to pressures due to liquid on both sides, the resultant pressure is the __________ of the two pressures.
Discuss
Answer: (b).difference
Q216.
The increase in pressure at the outer edge of a drum of radius (r) completely filled up with liquid of density (ฯ) and rotating at (ฯ‰) rad/s is
Discuss
Answer: (c).ฯ ฯ‰² r2/2
Q217.
When the Mach number is between __________ the flow is called super-sonic flow.
Discuss
Answer: (d).1 and 6
Q218.
A glass tube of small diameter (d) is dipped in fluid. The height of rise or fall in the tube given by (where w = Specific weight of liquid, ฮฑ = Angle of contact of the liquid surface, and ฯƒ = Surface tension)
Discuss
Answer: (c).4ฯƒ cosฮฑ/wd
Q219.
An internal mouthpiece is said to be running free if the length of the mouthpiece is __________ the diameter of the orifice.
Discuss
Answer: (c).less than three times
Discuss
Answer: (b).directly proportional to H^3/2