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Engineering
Mechanical
ME Set-1
Hydraulics and fluid mechanics
120

Hydraulics and fluid mechanics MCQ with Answers

120) When the coefficient of discharge (C_d) is 0.623, then the general equation for discharge over a rectangular weir is

1.84(L - 0.1nH)H^3/2

1.84(L - nH)H²

1.84(L - 0.1nH)H^5/2

1.84(L - nH)H³

Answer is:

1.84(L - 0.1nH)H^3/2

Hydraulics and fluid mechanics MCQ with Answers

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Related Hydraulics and fluid mechanics MCQ with Answers

121) The total energy line lies over the centre line of the pipe by an amount equal to

pressure head

velocity head

pressure head + velocity head

pressure head - velocity head

Answer is:

pressure head + velocity head

122) A piezometer tube is used only for measuring

low pressure

high pressure

moderate pressure

vacuum pressure

Answer is:

moderate pressure

123) The flow in a pipe is turbulent when Reynold number is

less than 2000

between 2000 and 2800

more than 2800

none of these

Answer is:

more than 2800

124) When a tank containing liquid moves with an acceleration in the horizontal direction, then the free surface of the liquid

remains horizontal

becomes curved

falls on the front end

falls on the back end

Answer is:

falls on the front end

Hydraulics and fluid mechanics MCQ with Answers

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