Engineering Sciences
GATE XE year:2020 PYQs
Build your understanding with focused practice from past exam papers.
Questions 151–160 of 175. Imported answers require independent review unless marked reviewed.
Question 20
Open questionXE-GNAT2 marksNeeds review
A hammer mill, operating at a feed rate of 108 ton h⁻¹, consumes 10 kW power for reducing size of wheat grain from 3.2 mm to 1.25 mm. If Bond’s law holds good, the feed rate (round off to 2 decimal places) for reducing the size of the wheat grain to 0.75 mm at the same power consumption level is ______ ton h⁻¹.
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 21
Open questionXE-GNAT2 marksNeeds review
During spray drying of a milk sample, inlet and outlet temperatures are maintained at 132 °C and 80 °C, respectively. If the ambient temperature is 29 °C, the thermal efficiency (round off to 2 decimal places) of the dryer will be ______ %.
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 22
Open questionXE-GNAT2 marksNeeds review
An orange juice flowing at 0.80 kg s⁻¹ enters a counter current double pipe heat exchanger at 20 °C and leaves at 72 °C. Inlet and outlet temperatures of the hot water used as heating medium in the exchanger are 81 °C and 74 °C, respectively. The specific heat of the orange juice is 3.74 kJ kg⁻¹ K⁻¹ and overall heat transfer coefficient is 492 W m⁻² K⁻¹. The heat transfer surface area (round off to 2 decimal places) will be ______ m².
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 1
Open questionXE-HMCQ1 markNeeds review
In the northern hemisphere, the flow in the middle depths of the ocean is geostrophic. As we go down from that level and start approaching the bottom of the ocean, the flow deflects to the left of the geostrophic current because
Your answerChoose one option.
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 2
Open questionXE-HMCQ1 markNeeds review
Which one of the following is the definition of a monsoon?
Your answerChoose one option.
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 3
Open questionXE-HMCQ1 markNeeds review
Anthropogenic emission of ______ is the main contributor to the ongoing ocean acidification.
Your answerChoose one option.
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 4
Open questionXE-HMCQ1 markNeeds review
What are phytoplankton?
Your answerChoose one option.
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 5
Open questionXE-HMCQ1 markNeeds review
Consider the two atmospheric virtual temperature profiles observed in Delhi given in Figures (i) and (ii) below.
At what times of the day are you most likely to see such profiles?
Your answerChoose one option.
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 6
Open questionXE-HMCQ1 markNeeds review
A south-easterly wind is blowing towards which direction?
Your answerChoose one option.
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 7
Open questionXE-HNAT1 markNeeds review
Consider a dry parcel at 30 °C in an isothermal environment at 25 °C. The parcel rises adiabatically by 1 km. Assuming g = 10 m s⁻² and air density = 1 kg m⁻³, the buoyancy force at the new location (rounded off to 2 decimal places) is ______ m s⁻².
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer