Fluid Mechanics and Hydraulic Machines (3141906) MCQs

MCQs of Hydraulic Machines

Showing 21 to 30 out of 31 Questions
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21.
In a hydraulic crane, _____ is the component mainly responsible for lifting.
(a) boom
(b) counter-weights
(c) jib
(d) rotex gear
Answer:

Option (a)

22.
______ is attached to the fixed cylindrical chamber which moves in the upward or downward direction.
(a) Jigger
(b) Sliding ram
(c) Crown
(d) Pulley
Answer:

Option (b)

23.
A hydraulic coupling belongs to the category of
(a) power absorbing machines
(b) power developing machines
(c) energy transfer machines
(d) energy generating machines
Answer:

Option (c)

24.
The hydraulic coupling works on the principle of
(a) Newton's law
(b) Pascal's law
(c) change in the velocity of the fluid
(d) none of the above
Answer:

Option (c)

25.
Which of the following hydraulic machine is used in diesel locomotives?
(a) Fluid coupling
(b) Fluid torque converter
(c) Hydraulic intensifier
(d) Hydraulic accumulator
Answer:

Option (b)

26.
Which one of the followings is a wrong statement?
(a) The hydraulic press works on the principle of Pascal's law of transmission of fluid pressure.
(b) In a hydraulic torque converter, the input torque is equal to the output torque.
(c) In a hydraulic coupling, there is no direct contact between the driving and driven parts.
(d) The torque converter is more economical than the fluid coupling at low-speed ratios.
Answer:

Option (b)

27.
Which of the following hydraulic unit is used for transmitting increased or decreased torque to the driven shaft?
(a) Hydraulic ram
(b) Hydraulic intensifier
(c) Hydraulic torque convertor
(d) Hydraulic accumulator
Answer:

Option (c)

28.
The efficiency of hydraulic coupling is about
(a) 50%
(b) 75%
(c) 85%
(d) 98%
Answer:

Option (d)

29.
The efficiency of the hydraulic torque converter is about
(a) 50%
(b) 75%
(c) 85%
(d) 98%
Answer:

Option (c)

30.
An airlift pump is a device used
(a) to lift large quantities of water to smaller heights from small quantities of water available at greater heights
(b) to compress air by utilizing hydraulic power
(c) to lift large quantities of water at sub-atmospheric pressure
(d) to lift water from a deep well by utilizing the energy of compressed air
Answer:

Option (d)

Showing 21 to 30 out of 31 Questions
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