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SSC JE:Fluid Mechanics & Machinery Quiz 8

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Question 1

An increase in pressure of a liquid from 7.5MPa to 15MPa results into 0.2% decrease in its volume. Determine the coefficient of compressibility of liquiD.

Question 2

A jet of water with area 20

and velocity of 20 m/s strikes centre of a hemispherical vane. The vane moves at a velocity of 10 m/s in the direction of jet. The force exerted on the vane is:

Question 3

Which of the following pressure gauge is generally used for the calibration of other pressure measuring gauges ______.

Question 4

Water enters a pipe with sharp edge entrance with a velocity of 5m/s. The diameter of the pipe is 2cm. Determine the loss of head at the entrance of the pipe.

Question 5

Cavitation parameter is defined by

Question 6

For a fully developed flow of water in a pipe having diameter 10 cm, velocity 0.2 m/s and kinematic viscosity 10^-4 m²/s, the value of darcy friction coefficient is

Question 7

For a body which is floating on water, condition for stable equilibrium of the body
given G –centre of gravity
B – centre of buoyancy

Question 8

Which one of the following is impulse turbine?

Question 9

The velocity distribution in a turbulent boundary layer is given by u/U =(y/δ)^1/6. The displacement thickness (δ^*) __________.

Question 10

In a smooth pipe of uniform diameter 25cm, pressure of 50 kPa was observed at section 1 which was at elevation 10m and another section 2, elevation 12 m, the pressure was 20kPa and the velocity in was 1.25m/s. The fluid in the pipe is water. Which of the following statements is true?

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