CHEMICAL ENGINEERING

Question: A hydraulic accumulator comprises of
[A].

a storage device and a control valve.

[B].

a cylinder and a plunger.

[C].

two pistons and two cylinders.

[D].

a storage tank and a ram pump.

Answer: Option B

Explanation:

No answer description available for this question.

Question: If ‘x’ is the depth of flow in an open channel of large width, then the hydraulic radius is equal to
[A].

x

[B].

x/2

[C].

x/3

[D].

2x/3

Answer: Option A

Explanation:

No answer description available for this question.

Question: Choking in case of pipe flow means that a
[A].

specified mass flow rate can not be achieved.

[B].

valve is closed in the line.

[C].

restriction in flow cross-section area occurs.

[D].

none of these.

Answer: Option A

Explanation:

No answer description available for this question.

Question: Capacity of a hydraulic accumulator is defined in terms of maximum
[A].

amount of energy stored.

[B].

flow rate through accumulator.

[C].

rate of falling of ram.

[D].

volume available in the cylinder.

Answer: Option A

Explanation:

No answer description available for this question.

Question: A stream line is
[A].

fixed in space in steady flow.

[B].

always the path of particle.

[C].

drawn normal to the velocity vector at every point.

[D].

a line connecting the mid points of flow cross-section.

Answer: Option A

Explanation:

No answer description available for this question.

Question: An equipotential line is __________ to the velocity vector at every point.
[A].

normal

[B].

abnormal

[C].

tangential

[D].

none of these

Answer: Option A

Explanation:

No answer description available for this question.

Question: For steady ideal fluid flow, the Bernoulli’s equation states that the
[A].

velocity is constant along a stream line.

[B].

energy is constant throughout the fluid

[C].

energy is constant along a stream line, but may vary across stream lines

[D].

none of these

Answer: Option C

Explanation:

No answer description available for this question.

Question: During ageing of fluid carrying pipes, the
[A].

pipe becomes smoother with use.

[B].

friction factor increases linearly with time.

[C].

absolute roughness decreases with time.

[D].

absolute roughness increases linearly with time.

Answer: Option D

Explanation:

No answer description available for this question.

Question: The blades of a centrifugal impeller are said to be curved forward, if the __________ of the motion of impeller blades.
[A].

inlet tip of a blade curves in a direction opposite to that

[B].

outlet tip of a blade curves in a direction opposite to that

[C].

inlet tip of a blade is towards the direction

[D].

outlet tip of a blade is towards the direction

Answer: Option D

Explanation:

No answer description available for this question.

Question: A mixed flow centrifugal pump
[A].

employs such an impeller, through which the flow is a combination of radial & axial flow.

[B].

mixes the two fluids before pumping them.

[C].

pumps the two fluids separately and then mixes them.

[D].

employs impellers in both the radial & axial directions.

Answer: Option A

Explanation:

No answer description available for this question.