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Engineering
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ME Set-3
Fluid Mechanics
99

Fluid Mechanics MCQ with Answers

99) Mercury is often used in barometer because

(a) it is the best liquid

(b) the height of barometer will be less

(c) its vapour pressure is so low that it may be neglected

both (b) and (c)

Answer is:

both (b) and (c)

Fluid Mechanics MCQ with Answers

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Related Fluid Mechanics MCQ with Answers

100) Barometer is used to measure

pressure in pipes, channels etc.

atmospheric pressure

very low pressure

difference of pressure between two points

Answer is:

atmospheric pressure

Explanation:

Atmospheric pressure: The atmospheric air exerts a normal pressure upon all surfaces with which it is in contact and it is known as atmospheric pressure. Atmospheric pressure is also known as barometric pressure. Barometer is used to measure atmospheric pressure.

Barometer is used to measure

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

Venturimeter

Orifice plate

hot wire anemometer

pitot tube.

Answer is:

pitot tube.

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

102) Which of the following instrument can be used for measuring speed of an aeroplane

Venturimeter

pitot tube

hot wire anemometer

rotameter

Answer is:

pitot tube

Which of the following instrument can be used for measuring speed of an aeroplane

103) Piezometer is used to measure

pressure in pipe, channels etc.

atmospheric pressure

very low pressures

difference of pressure between two points

Answer is:

very low pressures

Fluid Mechanics MCQ with Answers

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