Hydraulic Machines MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Hydraulic Machines, 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 Hydraulic Machines 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 Hydraulic Machines mcq questions that explore various aspects of Hydraulic Machines problems. Each MCQ is crafted to challenge your understanding of Hydraulic Machines 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 Hydraulic Machines 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 Hydraulic Machines. 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 Hydraulic Machines knowledge to the test? Let's get started with our carefully curated MCQs!

Hydraulic Machines MCQs | Page 8 of 17

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Q71.
The force exerted (in newton) by a jetof water impinging normally on a fixed plate is (where w = Specific weight of water in N/m³, a = Cross-sectional area of jet in m², and V = Velocity of jet in m/s)
Discuss
Answer: (d).waV² / g
Q72.
A Pelton wheel develops 1750 kW under a head of 100 metres while running at 200 r.p.m. and discharging 2500 litres of water per second. The unit discharge of wheel is
Discuss
Answer: (a).0.25 m³/s
Discuss
Answer: (c).directly proportional to N²
Q74.
The power developed by a turbine is (where H = Head of water under which the turbine is working)
Discuss
Answer: (c).directly proportional to H^3/2
Q75.
If V1 and V2 are the velocities of water at inlet and outlet of the draft tube respectively, then the efficiency of a draft tube is
Discuss
Answer: (b).(V­1² - V2²) / V1²
Q76.
A jet of water enters and leaves a fixed curved vane tangentially. The force of jet along perpendicular to the vane is zero.
Discuss
Answer: (b).False
Q77.
In a mixed flow centrifugal pump, the flow through the impeller is a combination of radial and axial flows.
Discuss
Answer: (a).Correct
Discuss
Answer: (a).tangential flow impulse turbine
Q79.
The discharge through a reaction turbine __________ with the increase in unit speed.
Discuss
Answer: (c).decreases
Q80.
In a mixed flow reaction turbine, the flow of water is partly radial and partly axial.
Discuss
Answer: (a).Correct