Mechanical Engineering · all questions

Hydraulics And Fluid Mechanics
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Q401

Stoke is the unit of

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Q402

The value of the coefficient of compressibility for water at ordinary pressure and temperature in kg/cm is equal to

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Q403

Head developed by a centrifugal pump depends on

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Q404

If the atmospheric pressure on the surface of an oil tank (sp. gr. 0.8) is 0.2 kg/cm", the pressure at a depth of 50 m below the oil surface will be

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Q405

The pressure in the air space above an oil (sp. gr. 0.8) surface in a tank is 0.1 kg/cm". The pressure at 2.5 m below the oil surface will be

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Q406

If cohesion between molecules of a fluid is greater than adhesion between fluid and glass, then the free level of fluid in a dipped glass tube will be

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Q407

Hydraulic accumulator is used for

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Q408

A model of torpedo is tested in a towing tank at a velocity of 25 m/sec. The prototype is expected to attain a velocity of 5 m/sec. What model scale has been used?

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Q409

In axial flow fans and turbines, fluid enters and leaves as follows

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Q410

During the opening of a valve in a pipe line, the flow is

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Q411

The meatcentric height of a ship is 0.6 m and the radius of gyration is 4 m. The time of rolling of a ship is

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Q412

When a cylindrical vessel of radius (r) containing liquid is revolved about its vertical axis

ω

rad/s, then depth of parabola which the liquid assumes is

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Q413

The body will sink down if the force of buoyancy is __________ the weight of the liquid displaced.

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Q414

The body will float if the force of buoyancy is __________ the weight of the liquid displaced.

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Q415

The total pressure on an immersed surface inclined at an angle

θ

with the liquid surface is

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Q416

The property of a liquid which offers resistance to the movement of one layer of liquid over another adjacent layer of liquid, is called

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Q417

Liquids

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Q418

The discharge through a channel of rectangular section will be maximum, if

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Q419

A balloon lifting in air follows the following principle

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Q420

A weir, generally, used as a spillway of a dam is

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