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Fluid Mechanics and Hydraulic Machines MCQs: 221 Questions & Answers in Engineering

221 Fluid Mechanics and Hydraulic Machines MCQs in Engineering with answers & explanations. Page 8. Practice objective questions for competitive exams, inter… Use the answer toggle below to show or hide all solutions, tap an option to check one question, or open a question for its own page.

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Fluid Mechanics and Hydraulic Machines MCQs: 221 Questions & Answers in Engineering

In which of the following measuring devices Bernoulli’s equation is used:

The co-efficient of discharge of an orificemeter is ......that of a venturimeter.

The piezometric head is the summation of :

The total-energy-line in pipe flow is a graphical representation of the Bernoulli’s equation and represents the sum of velocity head, pressure head and the elevation head above:

The total energy represented by the Bernoulli’s equation (p/ρg +V2/2g +z) has the units:

The Bernoulli’s equation written in the conventional form p/ρg + V2/2g + z = constant total energy per unit of certain quantity. Identify this quantity from the choices given below:

A venturimeter is used for measuring:

The laminar/viscous flow is characterized by Reynolds number which is

The laminar flow is characterized by

In case of laminar flow, the loss of pressure head is proportional to

The pressure gradient in the direction of flow is equal to the shear gradient in the direction

…... studied the laminar flow through a circular tube experimentally

…... is the most commonly used equation for the velocity distribution for laminar flow through pipes.

In laminar flow the pressure drop per unit length of pipe (∆p/L) is given as

The K.E. correction factor a for a circular pipe is equal to

The momentum correction factor b for a circular pipe is to equal to

For viscous flow the co-efficient of friction is given by

In case of viscous flow through circular pipes

The maximum velocity in a circular pipe when flow is laminar occurs at

The flow is said to be turbulent when Reynolds number is

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