GATE XE Food Engineering PYQs & Answers

Questions 1–10 of 60. Imported answers require independent review unless marked reviewed.

Which one of the following statements is true for a high-pressure homogenizer?

Your answerChoose one option.

Homogenization takes place only due to uniform mixing of solid and liquid

Solid particles in the suspension are disintegrated due to the high shear rate exerted by the liquid

High pressure steam is injected to dissolve the solids

Solid particles in the suspension are compressed into a cake under high pressure

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Water is flowing at 100 litres/min through a pipe with a diameter of 5 cm. Assume the coefficient of viscosity of water to be 0.001 Pa.s and the density to be 1000 kg/m

. The Reynolds number for this flow is ________ (Round off to nearest integer)

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A wet solid, fed to a dryer at a rate of 5 kg/s, is dried using hot air. In this process its moisture content is reduced from 25% to 15%. The rate of moisture removal is ______ kg/s. (Round off to two decimal places)

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For a given temperature difference between the top and bottom surfaces of a flat metal plate, Fourier’s law of heat conduction implies that

Your answerSelect all correct options. You can choose more than one.

temperature gradient increases with increase in heat transfer area

heat flux is proportional to the thermal conductivity of the metal

heat flux increases with increase in thickness of the metal plate

temperature gradient decreases with increase in thickness of the metal plate

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During constant pressure cake filtration, for an incompressible cake deposited uniformly over a constant filter surface area,

Your answerSelect all correct options. You can choose more than one.

the cake resistance remains constant

the cake resistance increases in proportion to the cake thickness

the filtration rate remains constant

the filtration rate decreases with time

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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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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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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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The true density and bulk density of wheat grains are 1280 kg/m³ and 740 kg/m³, respectively. The porosity of the grains is _____. (rounded off to 2 decimal places)

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Potato slices weighing 50 kg is dried from 60% moisture content (wet basis) to 5% moisture content (dry basis). The amount of dried potato slices obtained (in kg) is _____. (Answer in integer)

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GATE XE Food Engineering PYQs

How to practice Food Engineering

Question 136

Question 139

Question 140

Question 147

Question 150

Question 151

Question 152

Question 153

Question 139

Question 140