Engineering Sciences
GATE XE year:2021 PYQs
Build your understanding with focused practice from past exam papers.
Questions 41–50 of 175. Imported answers require independent review unless marked reviewed.
Question 20
Open questionXE-BNAT2 marksNeeds review
Water discharges from a cylindrical tank through an orifice, as shown in the figure. The flow is considered frictionless. Initially, the water level in the tank was
m. The diameter of the tank is
m, while the diameter of the jet is
cm, and the acceleration due to gravity is
m/s
. The time taken (in seconds, up to one decimal place) for the water level in the tank to come down to
m is ______. 
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Open questionXE-BNAT2 marksNeeds review
Water discharges steadily from a large reservoir through a long pipe, as shown in the figure. The Darcy friction factor in the pipe is 0.02. The pipe diameter is 20 cm and the discharge of water is 360 m
/h. Water level in the reservoir is 10 m and acceleration due to gravity
m/s
. If minor losses are negligible, the length
(in meters, up to one decimal place) of the pipe is ______. 
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Open questionXE-BNAT2 marksNeeds review
Water is flowing with a flow rate
in a horizontal circular pipe. Due to the low pressure created at the venturi section (Section-1 in the figure), water from a reservoir is drawn upward using a connecting pipe as shown in the figure. Take acceleration due to gravity
m/s
. The flow rate
m
/s,
cm, and
cm. The maximum height (
, in meters, up to one decimal place) of the venturi from the reservoir just sufficient to raise the liquid up to Section-1 is ____________. 
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Open questionXE-CMCQ1 markNeeds review
Condition to be satisfied for
and
phases to be in equilibrium in a two-component (A and B) system at constant temperature and pressure is (Given:
is the chemical potential)Your answerChoose one option.
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Amino acids react to form peptides and proteins. This process is known as
Your answerChoose one option.
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The most favoured slip system in face centered cubic metal is
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The dielectric constant of a material at ultraviolet frequencies is mainly due to
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Match the different transformations/reactions in Column I with the most suitable information in Column II.
Column I
(P) Eutectoid reaction
(Q) Martensitic transformation
(R) Precipitation reaction
Column II
(1) involves no diffusion
(2) one solid phase transforms into two solid phases
(3) occurs in supersaturated solutions
Your answerChoose one option.
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In scanning electron microscopy, the resolution of backscattered electron (BSE) image is poorer compared to that of secondary electron (SE) image, because
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Which of the following deposition conditions favor the formation of larger grains in thin film?
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