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GATE 2019: Fluid Mechanics Quiz 13 (App update required to attempt this test)
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Question 1
Which of the following is not correctly matched dimension?
Question 2
The dimensionless number which becomes significant when Inertial and Surface Tension Forces tend to dominate is
Question 3
In a model test of spillway, the discharge and the velocity of flow over the model were 2 m3/s and 1.5 m/s respectively. The discharge over the prototype which is 36 times the model size will be ____ m3/s.
Question 4
A phenomenon is modeled using n dimensional variables with k primary dimensions. The number of non-dimensional variables is
Question 5
The drag of a sonar transducer is to be predicted, based on wind tunnel test data. The prototype, a 0.3 m diameter sphere is to be towed at 2.57 m/s in sea-water at 4.50C. the model is 152 mm in diameter. For sea-water at 4.50C,
.
For air at STP,
The required test speed in air will be
.
For air at STP,
The required test speed in air will be
Question 6
A 1 : 10 spilway model has a discharge of 1.5 m3/s. if a flood phenomenon takes 15 hours to occur in the prototype. The time it will take in the model is ________ hours.
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