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Mechanical Engineering Exam  >  Mechanical Engineering Tests  >  Topicwise Question Bank for Mechanical Engineering  >  Test: Hydraulic Pump - 2 - Mechanical Engineering MCQ

Test: Hydraulic Pump - 2 - Mechanical Engineering MCQ


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10 Questions MCQ Test Topicwise Question Bank for Mechanical Engineering - Test: Hydraulic Pump - 2

Test: Hydraulic Pump - 2 for Mechanical Engineering 2024 is part of Topicwise Question Bank for 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 Topicwise Question Bank for Mechanical Engineering for Mechanical Engineering & Test: Hydraulic Pump - 2 solutions in Hindi for Topicwise Question Bank 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 Topicwise Question Bank for Mechanical Engineering 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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