Engineering Sciences
GATE XE year:2019 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 shallow-bed horizontal belt type solvent extractor is operating on 0.3 mm thick soybean flakes with 0.5 m bed depth and a forward speed of 0.8 m min⁻¹ with miscella flux rate of 0.25 m min⁻¹. If porosity of the flakes is 60%, the distance between washing nozzle and miscella collecting receptacle (cm) is ____________ (round off to 1 decimal place).
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An extruded snack food is packed in a barrier film having water vapour transmission rate of 0.02 mL m⁻² day⁻¹. Pack surface area is 0.0012 m² per gram of dry food solids, EMC of the food is 6% (d.b.), initial moisture content is 2% (d.b.), critical moisture content is 5% (d.b.) and slope of moisture sorption isotherm is 3.4% (d.b.) per unit water activity (aᵥ). Sealed pack is stored at 30 °C. Assume that the vapor pressure of water at 30 °C is 31.7 torr. Time required for the food to reach the critical moisture content (days) is ________ (round off to 1 decimal place).
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Freezing of 100 mm spherical meat ball with 60% moisture at 35 °C is being done in an air blast freezer maintained at -45 °C. Given, latent heat of fusion for water is 333.2 kJ kg⁻¹, thermal conductivity of meat is 1.5 W m⁻¹ °C⁻¹, convective heat transfer coefficient is 40 W m⁻² °C⁻¹, density of frozen meat is 980 kg m⁻³ and initial freezing temperature of meat ball is -10 °C. Using Plank’s equation, freezing time (h) is ____________ (round off to 2 decimal places).
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In the equatorial belt, the Madden-Julian Oscillation (MJO) propagates
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Potential temperature increases with height in an atmosphere. Upon adiabatic vertical displacement, a parcel of dry air is
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Oxygen minimum zones in the ocean are formed in the layers where
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Water level in an estuary rises and falls in response to tidal forces. Assume that the only tidal period in an estuary is 12 hours. The speed of the ebb current in that estuary would be maximum
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The most abundant ions in seawater are
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Which among the following statements is true with respect to the axis of the Indian monsoon trough
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A student considered the following possibilities regarding trade wind inversion:
(P) Zonal component of wind is westerly
(Q) Zonal component of wind is easterly
(R) Meridional component of wind is poleward
(S) Meridional component of wind is equatorward
The only combination of correct statements is
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