GATE CH topic:process-engineering PYQs & Answers — Page 9

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Questions 81–90 of 650. Imported answers require independent review unless marked reviewed.

Topic practice 650 questionsPage 9 of 65

The boundary of a system does not allow exchange of either mass or energy (in the form of heat and/or work) with the surroundings. The system is termed

Your answerChoose one option.

Isolated

Open

Adiabatic

Closed

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In industrial heat exchanger design, the overall heat transfer coefficient

is estimated from the equation

where

and

are the convective heat transfer coefficients on the inner and outer side of the tube, respectively. This is valid for (i) tube of (ii) thermal conductivity.

Which one of the following is the CORRECT option to fill in the gaps (i) and (ii)?

Your answerChoose one option.

(i) thick-walled, (ii) high

(i) thin-walled, (ii) high

(i) thin-walled, (ii) low

(i) thick-walled, (ii) low

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The sum of the components of the force due to pressure and shear at the solid-fluid boundary of a solid body in the direction normal to the flow is

Your answerChoose one option.

Drag

Friction

Lift

Buoyancy

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Choose the CORRECT option for pathlines, streaklines and streamlines for a STEADY flow field.

Your answerChoose one option.

All three lines are identical

Only pathlines and streaklines are identical

Only pathlines and streamlines are identical

Only streamlines and streaklines are identical

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Choose the CORRECT ordering of the diameter

of the different types of pores in a solid catalyst.

Your answerChoose one option.

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Schmidt number is defined as

Your answerChoose one option.

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is the mass transfer coefficient and

is the molecular diffusivity, which one of the following statements is NOT CORRECT with respect to mass transfer theories?

Your answerChoose one option.

For Film theory,

For Penetration theory,

For Surface Renewal theory,

For Boundary Layer theory,

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Choose the CORRECT statement that describes the dependence of the variance (

) of the residence time distribution (RTD) with respect to the number of tanks (

) in the Tanks-in-Series model of non-ideal reactors.

Your answerChoose one option.

monotonically increases with

first increases and then decreases with

first decreases and then increases with

monotonically decreases with

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The vortex shedding meter is primarily used for measuring

Your answerChoose one option.

Fluid Flow Rate

Liquid Level

Fluid Temperature

Fluid Pressure

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Choose the transfer function that best fits the output response to a unit step input change shown in the figure

Diagram for Chemical Engineering question 25

Your answerChoose one option.

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GATE CH topic:process-engineering PYQs

Question 16

Question 17

Question 18

Question 19

Question 20

Question 21

Question 22

Question 23

Question 24

Question 25