Mechanical Engineering · all questions

Hydraulics And Fluid Mechanics
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Q161

Which of the following statement is wrong?

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Q162

Which of the following statement is wrong?

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Q163

An open vessel of water is accelerated up an inclined plane. The free water surface will

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Q164

Newton's law of viscosity is a relationship between

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Q165

The rise of liquid along the walls of a revolving cylinder about the initial level is _________ the depression of the liquid at the axis of rotation.

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Q166

Mercury is often used in barometer because

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Q167

A compound pipe is required to be replaced by a new pipe. The two pipes are said to be equivalent, if

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Q168

For a floating body to be in equilibrium

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Q169

The specific speed of a hydraulic turbine depends upon

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Q170

The runaway speed of a hydraulic turbine is the speed

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Q171

Specific speed for reaction turbines ranges from

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Q172

Resultant pressure of the liquid in the case of an immersed body acts through

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Q173

Buoyant force is

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Q174

The ratio of the inertia force to the elastic force is called

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Q175

The most economical section of a rectangular channel is one which has hydraulic mean depth or hydraulic radius equal to

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Q176

Specific weight of sea water is more that of pure water because it contains

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Q177

The gross or total head of the turbine is the ___________ of the water levels at the head race and tail race.

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Q178

In order to avoid cavitation in centrifugal pumps

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Q179

The Francis formula for the discharge over Cipoletti weir is

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Q180

The velocity through a channel of circular section will be maximum when the depth of water is __________ the diameter of the circular channel.

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