MCQ Questions Mechanical Engineering Hydraulic Machines

Hydraulic Machines-4

MCQ Questions Mechanical Engineering Hydraulic Machines

Take a look at these MCQ Questions Hydraulic Machines for engineering interview questions and our tips on how to answer them. If you’re applying for an engineering internship, graduate scheme or entry-level job, you’ll face at least one interview as part of an engineering employer’s recruitment process. You may be interviewed by one or more members of the HR team, senior members of the engineering team you’d be joining or a mixture of both. In this section we will study MCQ Questions Mechanical Engineering Hydraulic Machines. 
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MCQ Questions Mechanical Engineering Hydraulic Machines - Set - 4

Question 1: 

Francis, Kaplan and propeller turbines fall under the category of
(a) Impulse turbines
(b) Reaction turbines
(c) Axial flow turbines
(d) Mixed flow turbines

Correct Answer – (B)

Question 2 : 

The flow rate in gear pump
(a) increases with increase in pressure
(b) decreases with increase in pressure
(c) more or less remains constant with in-crease in pressure
(d) unpredictable

Correct Answer – (C)

Question 3 : 

Guide angle as per the aerofoil theory of Kaplan turbine blade design is defined as the angle between
(a) lift and resultant force
(b) drag and resultant force
(c) lift and tangential force
(d) lift and drag

Correct Answer – (A)

Question 4 : 

Casting of a centrifugal pump is designed so as to minimize
(a) friction loss
(b) cavitation
(c) static head
(d) loss of kinetic energy

Correct Answer – (D)

Question 5 : 

The specific speed of turbine is defined as the speed of a unit
(a) of such a size that it delivers unit dis-charge at unit head
(b) of such a size that it delivers unit dis-charge at unit power
(c) of such a size that it requires unit power per unit head
(d) of such a size that it produces unit horse power with unit head

Correct Answer – (D)

MCQ Questions Mechanical Engineering Hydraulic Machines

Question 6: 

Impulse turbine is generally fitted
(a) at the level of tail race
(b) little above the tail race
(c) slightly below the tail race
(d) about 2.5 m above the tail race to avoid cavitation

Correct Answer – (D)

Question 7: 

Francis turbine is best suited for
(a) medium head application from 24 to 180 m
(b) low head installation up to 30 m
(c) high head installation above 180 m
(d) all types of heads

Correct Answer – (A)

Question 8: 

In reaction turbine, draft tube is used
(a) to transport water downstream without eddies
(b) to convert the kinetic energy to flow energy by a gradual expansion of the flow cross-section
(c) for safety of turbine
(d) to increase flow rate

Correct Answer – (B)

Question 9: 

A turbine pump is basically a centrifugal pump equipped additionally with
(a) adjustable blades
(b) backward curved blades
(c) vaned diffusion casing
(d) inlet guide blades

Correct Answer – (C)

Question 10: 

High specific speed of turbine implies it is
(a) propeller turbine
(b) Francis turbine
(c) impulse turbine
(d) any one of the above

Correct Answer – (A)

MCQ Questions Mechanical Engineering Hydraulic Machines
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