Engineering Sciences
GATE XE exam:gate PYQs
Build your understanding with focused practice from past exam papers.
Questions 131–140 of 1772. Imported answers require independent review unless marked reviewed.
Question 131
Open questionXE-FNAT2 marksNeeds review
A single-screw extruder is operated at 12 rpm under open discharge condition (i.e., without a die).
The screw has a diameter of 10 cm, a distance of 2.5 cm between the adjacent flights, a gap of 0.25 cm between the screw and the inner wall of the barrel, and a helix angle (i.e., angle between the flights and the plane perpendicular to the screw axis) of 8°.
If the flow of the molten polymer in the metering zone through the extruder is assumed isothermal, Newtonian and incompressible, the volumetric flow rate of the polymer melt is ______________ cm
/min (rounded off to the nearest integer).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 132
Open questionXE-GMCQ1 markNeeds review
Ergotism is caused by ingestion of grains infected with
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 133
Open questionXE-GMCQ1 markNeeds review
Match the bacteria in Column I with their respective characteristic features in Column II.
Column I: (P) E. coli; (Q) B. subtilis; (R) S. aureus; (S) L. monocytogenes.
Column II: (1) Gram-positive, round-shaped and non-spore formers; (2) Gram-negative, rod-shaped and non-spore formers; (3) Gram-positive, rod-shaped and spore formers; (4) Gram-positive, rod-shaped and non-spore formers.
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 134
Open questionXE-GMCQ1 markNeeds review
Carmine, a food colorant, is derived from
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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 135
Open questionXE-GMCQ1 markNeeds review
Which one of the following carbohydrates is NOT a storage polysaccharide?
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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 136
Open questionXE-GMCQ1 markNeeds review
Which one of the following statements is true for a high-pressure homogenizer?
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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 137
Open questionXE-GMCQ1 markNeeds review
Coconut oil contains a small fraction of unsaturated fatty acids, but still has a low melting point due to the presence of
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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 138
Open questionXE-GMSQ1 markNeeds review
Which of the following amines, produced as a result of protein degradation, is/are foul smelling?
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 139
Open questionXE-GNAT1 markNeeds review
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)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 140
Open questionXE-GNAT1 markNeeds review
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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