Engineering Sciences
GATE XE topic:engineering PYQs
Build your understanding with focused practice from past exam papers.
Questions 151–160 of 1772. Imported answers require independent review unless marked reviewed.
Question 151
Open questionXE-GNAT2 marksNeeds review
Hot oil is being cooled in a countercurrent, double-pipe heat exchanger from 410 K to 340 K by chilled water entering at 290 K and exiting the exchanger at 330 K. The Log Mean Temperature Difference (LMTD) for this heat transfer is ________ K. (Round off to one decimal place)
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Open questionXE-GNAT2 marksNeeds review
A cold-storage room has a double-layered wall. The inner layer is 10 cm thick, made of fiber insulation board (k = 0.048 W m⁻¹ K⁻¹), and the outer layer is 15 cm thick, made of concrete (k = 0.762 W m⁻¹ K⁻¹). The surface temperature of the wall inside the cold room is 260 K and the ambient temperature outside is 300 K. The steady state heat flux into the cold room is __________ W/m². (Round off to two decimal places)
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 153
Open questionXE-GNAT2 marksNeeds review
A tubular centrifuge separates 5 micron particles of density 1500 kg/m³ from a slurry. The slurry is fed at a volumetric flow rate of 0.5 m³/s. The equivalent clarification area of the centrifuge is ______ m². (Answer in integer)
Assume g = 10 m/s² and for water, density = 1000 kg/m³, coefficient of viscosity (μ) = 10⁻³ Pa-s
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 154
Open questionXE-HMCQ1 markNeeds review
Which of the following is TRUE for the ‘summer solstice’ in the Northern Hemisphere?
Your answerChoose one option.
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 155
Open questionXE-HMCQ1 markNeeds review
Which of the following options are parts of the atmospheric boundary layer?
Your answerChoose one option.
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 156
Open questionXE-HMCQ1 markNeeds review
What is the approximate value of annual-mean pH of seawater at the surface in the northern Indian Ocean?
Your answerChoose one option.
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 157
Open questionXE-HMCQ1 markNeeds review
Which of the following weather systems has the shortest duration of lifecycle?
Your answerChoose one option.
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 158
Open questionXE-HMSQ1 markNeeds review
Which of the following statements based on the given figure is / are TRUE with respect to the upwelling process in the ocean?
Your answerSelect all correct options. You can choose more than one.
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 159
Open questionXE-HNAT1 markNeeds review
In a stable atmosphere, the change in pressure (in kilo Pascal) at a height of 100 m from the mean sea level is _____. (rounded off to three decimal places)
[Density of air is
and acceleration due to gravity is
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 160
Open questionXE-HNAT1 markNeeds review
If 20 wave crests pass a fixed point in an interval of 5 minutes, then the frequency of the wave (in Hertz) is ______. (rounded off to three decimal places)
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