Questions 171–180 of 1772. Imported answers require independent review unless marked reviewed.

Topic practice 1772 questionsPage 18 of 178

Question 171

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For an incompressible fluid, the velocity components (u, v, and w) are given as:





The value of b is ______________. (Answer in integer)

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Question 172

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A steady westerly wind is blowing over the ocean surface at a latitude of 30°N and exerting a wind stress of 0.8

.
The magnitude of net volume transport (in

) per unit width is _____. (rounded off to three decimal places)
[Density of seawater is 1025

, angular velocity of the Earth is

.]

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Question 173

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In a free atmosphere without friction, if the pressure increases by one kilo Pascal eastward across a distance of 200 km, the magnitude of geostrophic flow (in

) is _____. (rounded off to two decimal places)
[Density of air is 1.029

and the Coriolis parameter is

.]

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Question 174

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Using the dispersion relation for deep water small amplitude wave, the wavelength (in m) for a 20 second gravity wave is _____. (Answer in integer)
[Take acceleration due to gravity as 9.81

]

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Question 175

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A two-layered fluid system in an estuarine environment has a total water depth of 10 m. The difference in densities between the two layers is 15

and thickness of the less dense upper layer is 3 m.
If complete mixing occurs in 3 hours, then intensity (in

) of mixing process is __________. (rounded off to three decimal places)
[Acceleration due to gravity is 9.81

]

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Question 176

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The luminous efficacy of an electric light bulb is measured in which one of the following units?
Your answerChoose one option.

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Question 177

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Which one of the following biomass treatment processes occurs in an oxygen limited condition approximately between 450 °C and 600 °C, and produces biochar and bio-oil as primary products?
Your answerChoose one option.

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Question 178

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For a fixed thermal output, which one of the following is the major advantage offered by a concentrated collector over a flat plate collector?
Your answerChoose one option.

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Question 179

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A part of the blowdown energy losses in a boiler can be recovered by which one of the following ways?
Your answerChoose one option.

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Question 180

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Which of the following is/are greenhouse gas(es), as identified by the Intergovernmental Panel on Climate Change (IPCC)?
Your answerSelect all correct options. You can choose more than one.

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