Mechanical Engineering

Question: A moving fluid mass may be brought to a static equilibrium position, by aplying an imaginary inertia force of the same magnitude as that of the accelerating force but in the opposite direction. This statement is called
[A].

Pascal’s law

[B].

Archimede’s principle

[C].

D-Alembert’s principle

[D].

none of these

Answer: Option C

Explanation:

No answer description available for this question.

Question: Laminar flow __________ place at very low velocities.
[A].

takes

[B].

does not take

Answer: Option A

Explanation:

No answer description available for this question.

Question: A flow in which __________ force is dominating over the viscosity is called turbulent flow.
[A].

elastic

[B].

surface tension

[C].

viscous

[D].

inertia

Answer: Option D

Explanation:

No answer description available for this question.

Question: A flow in which the viscosity of fluid is dominating over the inertia force is called
[A].

steady flow

[B].

unsteady flow

[C].

laminar flow

[D].

turbulent flow

Answer: Option C

Explanation:

No answer description available for this question.

Question: An ideal fluid is frictionless and incompressible.
[A].

Correct

[B].

Incorrect

Answer: Option A

Explanation:

No answer description available for this question.

Question: A fluid which obeys the Newton’s law of viscosity is termed as
[A].

real fluid

[B].

ideal fluid

[C].

newtonian fluid

[D].

non-newtonian fluid

Answer: Option C

Explanation:

No answer description available for this question.

Question: A fluid whose viscosity changes with the rate of deformation or shear strain is known as non-newtonian fluid.
[A].

True

[B].

False

Answer: Option A

Explanation:

No answer description available for this question.

Question: A fluid whose viscosity does not change with the rate of deformation or shear strain is known as
[A].

real fluid

[B].

ideal fluid

[C].

newtonian fluid

[D].

non-newtonian fluid

Answer: Option C

Explanation:

No answer description available for this question.

Question: A fluid having no viscosity is known as
[A].

real fluid

[B].

ideal fluid

[C].

newtonian fluid

[D].

non-newtonian fluid

Answer: Option B

Explanation:

No answer description available for this question.

Question: One stoke is equal to
[A].

10-2 m2/s

[B].

10-3 m2/s

[C].

10-4 m2/s

[D].

10-6 m2/s

Answer: Option C

Explanation:

No answer description available for this question.