Mechanical Engineering · all questions

Hydraulics And Fluid Mechanics
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Q661

A hydraulic press has a ram of 15 cm diameter and plunger of 1.5 cm. It is required to lift a weight of 1 tonne. The force required on plunger is equal to

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Q662

Specific weight of water in S.I. units is equal to

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Q663

The specific weight of water in S.I. units is taken as

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Q664

A flow is called super-sonic if the

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Q665

One liter of water occupies a volume of

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Q666

The variation in the volume of a liquid with the variation of pressure is called its

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Q667

The unit of surface tension is

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Q668

Unit of surface tension is

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Q669

Hydrometer is used to determine

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Q670

The units of dynamic or absolute viscosity are

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Q671

In a short cylindrical external mouthpiece, the vena contracta occurs at a distance __________ the diameter of the orifice from the outlet of orifice.

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Q672

The total pressure on the top of a closed cylindrical vessel of radius (r) completely filled up with liquid of specific weight (w) and rotating at (

ω

) rad/s about its vertical axis, is

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Q673

Which of the following instrument can be used for measuring speed of a submarine moving in deep sea?

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Q674

A pressure of 25 m of head of water is equal to

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Q675

In a centrifugal pump casing, the flow of water leaving the

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Q676

According to fan laws, for the fans having constant wheel diameters, the power demand varies

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Q677

The number of buckets on the periphery of a Pelton wheel is given by

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Q678

The pressure at a point in a fluid will not be same in all the directions when the fluid is

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Q679

When a body is placed over a liquid, it will sink down if

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Q680

The kinematic viscosity of an oil (in stokes) whose specific gravity is 0.95 and viscosity 0.011 poise, is

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