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UPPSC AE (CE) Quiz 39

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Question 1

If only gravity and inertia dominates, then what will be the expression for discharge ratio in model similarity?

Question 2

A harbor model has a horizontal scale of 1/50 and a vertical scale of 1/60. The interval between successive high tides in the model will be nearly? Assume t_p = 12 hours.

Question 3

A ship model of scale 1:100 has a wave resistance of 1 kg at its design speed. The corresponding wave resistance in prototype will be?

Question 4

Dynamic similarly exists when the model and the prototype have the same-

Question 5

A 1: 25 model of a naval ship having a submerged area of 6 m² and length 10 m has a total drag of 35 N when towed through water at a velocity of 2.0 m/s. Use relation

for skin resistance. The value of

is given by

The total drag on prototype when moving at corresponding speed is ______kN.
[Take kinematic viscosity of water (or sea water) as 0.01 stokes and the specific weight of sea water as 1000 kg/m³]

Question 6

Match List-I with List – II and choose the correct option using the codes given below :

Question 7

The discharge through a weir is 1.62 m³/s. Find the discharge through the model of the weir, if the horizontal dimension of prototype is 60 times the horizontal dimension of the model and vertical dimension of prototype is 9 times the vertical dimension of the model:

Question 8

Which of the following statements is NOT correct

Question 9

A model having scale ratio of 1 : 40 is built for a rectangular weir over the river. The average depth of water in the river is 3.5 m. If the force acting on the model was calculated to be 3.0 N, the force acting on the prototype would be:

Question 10

The flow in a river is 1800 cumecs. A distorted model is built with horizontal scale of 1/100 and vertical scale of 1/25.The flow rate in the model should be

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May 12AE & JE Exams