ISRO Scientist or Engineer Mechanical 2007

Instructions

For the following questions answer them individually

Question 11

If the governing equation fora flow field is given by $$\triangledown^2\phi = 0$$ and the velocity is given by

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Question 12

With rise in temperature thermal conductivity of air

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Question 13

In a reversible adiabatic process, the ratio of $$\frac{T_1}{T_2}$$ is equal to

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Question 14

Chances of occurrenceof cavitation are high if the

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Question 15

The general equation of continuity for three-dimensional flow of a incompressible fluid for steady flow is

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Question 16

A liquid compressedin cylinder has a volume of 0.04 m$$^3$$ at 50 kg/cm$$^2$$ and a volume of 0.039 m$$^3$$ at 150 kg/cm$$^2$$. The bulk modulus of liquid is

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Question 17

The buoyancy depends on

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Question 18

A fluid jet discharging from a 100 mm diameter orifice has a diameter of 80 mmat its vena contracta. The coefficient of contraction is

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Question 19

If a jet of water of area ā€˜Aā€™ strikes with velocity ā€˜Vā€™ a series of flat plates mounted on a wheel of mean diameter D rotating at N rpm, then force exerted will be equal to

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Question 20

The maximum height of a siphon for a fluid of specific gravity $$\rho$$ under atmospheric conditions is

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