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GATE CE: Hydraulics Champion Quiz 1

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Question 1

For the stability of a floating body, under the influence of gravity alone, which of the following is TRUE?

Question 2

Which is the correct equation of head loss in a pipe?

Question 3

For a fully developed flow or water in a pipe having diameter 10 cm, velocity 0.1 m/s and kinematic viscosity $Description: D:\GradeStack Courses\GATE Tests (Sent by Ravi)\GATE-ME-2014-Set-1_files\image146.png$ , the value of Darcy friction factor is ____

Question 4

The head loss in a sudden expansion from 6 cm diameter pipe to 12 cm diameter pipe in terms of velocity V₁ in the smaller diameter pipe is _________.

Question 5

A ship’s model with scale 1:100, has a wave resistance of 10 N at its design speed. What is the corresponding proptotype wave resistance in KN ?

Question 6

The loss A 1 : 25 model of a naval ship is towed at a velocity of 1.2 m/s to determine each of the two components of the total drag that may be experienced by the prototype. The wave making drag of the model is duly estimated to be 0.37 kgf. What would be the wave making drag on the prototype ship?

Question 7

Three identical pipes of length L, diameter d and friction factor are connected in parallel between two reservoirs. What is the size of a pipe of length L and of the same friction factor f equivalent to the above pipe?

Question 8

A wooden rectangular block with one face horizontally in liquid has a density of 450 kg/m³. Find the percentage of block which is not submerged in liquid. Assume the specific gravity of fluid as 0.6.

Question 9

A 2.50 m diameter plate is immersed in fluid having density of 800 kg/m³ What will be the force exerted on a face due to fluid pressure, if the depth of the circular plate are 2.50 m and 1.50 m.

Question 10

In order to estimate the energy loss in a pipeline of 1 m diameter through which kerosene of specific gravity 0.80 and dynamic viscosity 0.02 poise is to be transported at the rate of 2 m³/s, model tests were conducted on a 0.1 m diameter pipe using water at 20 °C. If the absolute viscosity of water at 20 °C is 1.00 X 10^-2 poise, then the discharge required for the model pipe would be

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ESE & GATE CE Fluid Mechanics

Jul 8ESE & GATE CE