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ISRO ME Quiz 1 : Fluid Mechanics

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Question 1

For flow through a horizontal pipe, the pressure gradient

in the flow direction is

Question 2

In centrifuge pumps, maximum efficiency is obtained when the blades are __________.

Question 3

A piece weighing 3 kg in air was found to weigh 2.5 kg when submerged in water. Its specific gravity is _________.

Question 4

Across a normal shock

Question 5

For a reciprocating water pump having cylinder diameter d and crank radius r, If W is the weight of water lifted, the coefficient of discharge is

Question 6

A 70 kg person walks on snow with a total foot implint area of 500 cm² . What pressure does he exert on snow ?

Question 7

If in a pump, the discharge is halved, then assuming that the speed remains unchanged, what would be the ratio of the heads H₁/H₂?

Question 8

Match List-I (Losses) with List-II (Parameters responsible) and select the correct answer using the codes given below the lists:
List-I
A. Leakage loss
B. Friction loss
C. Entrance loss
List-II
1) Zero at design point
2) Proportional to head
3) Proportional to half of relative velocity square

Question 9

Which one of the following statements is correct for the velocity potential?

Question 10

Jet pumps are often used in process industry for their

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ESE & GATE ME Fluid Mechanics & Machinery

Jul 2ESE & GATE ME