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Mechanical Engineering Exam  >  Mechanical Engineering Tests  >  Test: Hydraulic Pump - 2 - Mechanical Engineering MCQ

Test: Hydraulic Pump - 2 - Mechanical Engineering MCQ


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10 Questions MCQ Test - Test: Hydraulic Pump - 2

Test: Hydraulic Pump - 2 for Mechanical Engineering 2024 is part of Mechanical Engineering preparation. The Test: Hydraulic Pump - 2 questions and answers have been prepared according to the Mechanical Engineering exam syllabus.The Test: Hydraulic Pump - 2 MCQs are made for Mechanical Engineering 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Hydraulic Pump - 2 below.
Solutions of Test: Hydraulic Pump - 2 questions in English are available as part of our course for Mechanical Engineering & Test: Hydraulic Pump - 2 solutions in Hindi for Mechanical Engineering course. Download more important topics, notes, lectures and mock test series for Mechanical Engineering Exam by signing up for free. Attempt Test: Hydraulic Pump - 2 | 10 questions in 30 minutes | Mock test for Mechanical Engineering preparation | Free important questions MCQ to study for Mechanical Engineering Exam | Download free PDF with solutions
Test: Hydraulic Pump - 2 - Question 1
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If two pumps identical in all respects and each capable of delivering a discharge Q against a head H are connected in series, the resulting discharge is

Detailed Solution for Test: Hydraulic Pump - 2 - Question 1

Test: Hydraulic Pump - 2 - Question 2
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Cavitation parameter a defined in terms of NPSH (net positive suction head) and net head H as, σ =

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Test: Hydraulic Pump - 2 - Question 3
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In a pump installation the local atmospheric pressure is 10 m of water, vapour pressure head is 0.4 m (abs), height of the pump above sump water level is 5 m. For a head loss in the suction side of 0.6 m, the NPSH is

Detailed Solution for Test: Hydraulic Pump - 2 - Question 3


Zs = elevation of pump above the liquid surface in the sump. If the pump is set below the liquid level in the sump then Zs would be negative.

Test: Hydraulic Pump - 2 - Question 4
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Water is to be lifted by a net head of 184 m. Identical pumps with specific speed of 30 and rotative of 1500 rpm capable of discharging 200 L/s are available. The number of pumps required is [Take 1843/4 = 50]
Detailed Solution for Test: Hydraulic Pump - 2 - Question 4


∴ Q = 1000 L/s
Number of pumps = 1000/200 = 5

Test: Hydraulic Pump - 2 - Question 5
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Water is pumped through a pipeline to a hieght of 10 m at the rate of 0.1 m3/s. Frictional and other minor losses are 5 m. Pumping power required, in kW is
Detailed Solution for Test: Hydraulic Pump - 2 - Question 5

Total manometric head,
H = 10 + 5 = 15 m
Pumping power,
P = g Q H = 9:81 x 0.1 x 15
= 14.715 kW

Test: Hydraulic Pump - 2 - Question 6
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In a reciprocating pump without air vessel, the friction head in the delivery pipe is maximum at the crank angle θ =
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hfs is maximum at 

Test: Hydraulic Pump - 2 - Question 7
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The indicator diagram of a reciprocating pump is a plot of
Test: Hydraulic Pump - 2 - Question 8
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Actual indicator diagram for a single stage "reciprocating pump is represented by
Test: Hydraulic Pump - 2 - Question 9
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An air vessel in the delivery side of a reciprocating pump
Detailed Solution for Test: Hydraulic Pump - 2 - Question 9

Function ofair vessel fitted on delivery side:
(i) Almost constant delivery discharge is obtained.
(ii) Reduction in friction loss and hence saving in power.

Test: Hydraulic Pump - 2 - Question 10
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Which one of the following is not a positive displacement pump?
Detailed Solution for Test: Hydraulic Pump - 2 - Question 10


Note that centrifugal pump is not positive displacement pump. It is a rotodynamic or dynamic pressure pump.

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