CHEMICAL ENGINEERING | Chemical Engineering Thermodynamics

In an irreversible process

Byadmin August 8, 2022

Question: In an irreversible process
[A].

Tds = dE – dW = 0

[B].

dE – dW – Tds = 0

[C].

Tds – dE + dW< 0

[D].

Tds – dT + dW< 0

Answer: Option C

Explanation:

No answer description available for this question.

CHEMICAL ENGINEERING | Fluid Mechanics

Cd, Cc and Cv are related (for flow through an orifice) as (where, Cd = discharge co-efficientCc = co-efficient of contractionCv = co-efficient of velocity)

Question: Cd, Cc and Cv are related (for flow through an orifice) as (where, Cd = discharge co-efficientCc = co-efficient of contractionCv = co-efficient of velocity)
[A].

Cd = Cc/Cv
[B].
Cd = Cc.Cv
[C].
Cd = Cv/cc
[D].
none of these

Answer: Option B

Explanation:

No answer description available for this question.

Read More Cd, Cc and Cv are related (for flow through an orifice) as (where, Cd = discharge co-efficientCc = co-efficient of contractionCv = co-efficient of velocity)
CHEMICAL ENGINEERING | Heat Transfer

A steel sphere of radius 0.1 m at 400°K is immersed in an oil at 300°K. If the centre of the sphere reaches 350°K in 20 minutes, how long will it take for a 0.05 m radius steel sphere to reach the same temperature (at the centre) under identical conditions ? Assume that the conductive heat transfer co-efficient is infinitely large.

Question: A steel sphere of radius 0.1 m at 400°K is immersed in an oil at 300°K. If the centre of the sphere reaches 350°K in 20 minutes, how long will it take for a 0.05 m radius steel sphere to reach the same temperature (at the centre) under identical conditions ? Assume that the conductive heat transfer co-efficient is infinitely large.
[A].

5 minutes
[B].
10 minutes
[C].
20 minutes
[D].
40 minutes

Answer: Option A

Explanation:

No answer description available for this question.

Read More A steel sphere of radius 0.1 m at 400°K is immersed in an oil at 300°K. If the centre of the sphere reaches 350°K in 20 minutes, how long will it take for a 0.05 m radius steel sphere to reach the same temperature (at the centre) under identical conditions ? Assume that the conductive heat transfer co-efficient is infinitely large.
CHEMICAL ENGINEERING | Chemical Engineering Basics

The hydraulic radius of a circular pipe of diameter ‘d’ flowing full is

Question: The hydraulic radius of a circular pipe of diameter ‘d’ flowing full is
[A].

d/4
[B].
d/2
[C].
2d/3
[D].
d/3

Answer: Option A

Explanation:

No answer description available for this question.

Read More The hydraulic radius of a circular pipe of diameter ‘d’ flowing full is
CHEMICAL ENGINEERING | Chemical Engineering Thermodynamics

In a working refrigerator, the value of COP is always

Question: In a working refrigerator, the value of COP is always
[A].

0
[B].
< 0
[C].
< 1
[D].
> 1

Answer: Option D

Explanation:

No answer description available for this question.

Read More In a working refrigerator, the value of COP is always
CHEMICAL ENGINEERING | Fluid Mechanics

__________ flow means the flow of incompressible fluid with no shear.

Question: __________ flow means the flow of incompressible fluid with no shear.
[A].

Potential
[B].
Streamline
[C].
Creep
[D].
Boundary layer

Answer: Option A

Explanation:

No answer description available for this question.

Read More __________ flow means the flow of incompressible fluid with no shear.
CHEMICAL ENGINEERING | Heat Transfer

__________ heat exchanger is the most suitable, when the temperature of shell side fluid is much higher than that of tube side.

Question: __________ heat exchanger is the most suitable, when the temperature of shell side fluid is much higher than that of tube side.
[A].

Single pass, fixed tube sheet
[B].
U-tube
[C].
Three pass, fixed tube sheet
[D].
none of these

Answer: Option B

Explanation:

No answer description available for this question.

Read More __________ heat exchanger is the most suitable, when the temperature of shell side fluid is much higher than that of tube side.

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