Fluid Mechanics MCQ Questions & Answers

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Each section contains 100 MCQs on Fluid Mechanics .

Quicksand is an example of a __________ fluid.

A) Bingham plastic B) Dilatent C) Newtonion D) Pseudoplastic

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

Drag is the force component exerted on an immersed object,

A) Passing the centroid of the body at 60°to the direction of motion B) The component being parallel to theflow direction C) The component being normal to the flow direction D) None of these

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

In case of a pipe exit fitted with a nozzle, the

A) Conversion of kinetic head to pressure head is facilitated B) Conversion of pressure head to kinetic head is facilitated C) Power transmitted through the nozzle is maximum, when the head lost due to friction in the pipe is equal to one third of the total supply head D) Both B and C

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

Reynolds number is the ratio of

A) Viscous forces to gravity forces B) Inertial forces to viscous forces C) Viscous forces to inertial forces D) Inertial forces to gravity forces

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

The valve used for very remote and accurate control of fluid is a __________ valve.

A) Needle B) Globe C) Gate D) Butterfly

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

The terminal velocity of a particle moving through a fluid varies as d_pⁿ. What is the value of 'n' for Newton's law regime?

A) 0.5 B) 1 C) 1.5 D) 3

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

Absolute viscosity of a fluid is a function of the __________ of the fluid.

A) Motion B) Pressure & temperature C) Shearing stress D) Both B & C

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

A free jet of water of cross-sectional area 0.01 m² and a velocity of 20 m/s strikes a plate and then flows in a plane parallel to the plate as shown in the figure below. The horizontal component of the force on the support is

A) 200 N B) 400 N C) 2000 N D) 4000 N

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

Which of the following relationship is valid for the equilibrium position of the float in a rotameter? (where, D_f = Drag force on the float B_f = Buoyant force on the float W_f = Weight of the float)

A) D_f + B_f = W_f B) D_f = B_f + W_f C) D_f + B_f + W_f = 0 D) None of these

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

With increasing flow rate, the hydraulic efficiency of a centrifugal pump

A) Monotonically decreases B) Decreases and then increases C) Remains constant D) Increases and then decreases

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

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Fluid Mechanics MCQ Questions & Answers | Chemical Engineering