Engineering Sciences
GATE XE kind:question PYQs
Build your understanding with focused practice from past exam papers.
Questions 1271–1280 of 1772. Imported answers require independent review unless marked reviewed.
Question 3
Open questionXE-BMCQ1 markNeeds review
In which one of the following devices the difference between static and total pressure is used to determine the flow velocity?
Your answerChoose one option.
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A golf ball is dimpled to make the flow turbulent and consequently to reduce the drag. Turbulent flow reduces the drag on the golf ball because
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Open questionXE-BMCQ1 markNeeds review
For a steady laminar incompressible boundary layer flow over a sharp-edged flat plate at zero incidence,
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Open questionXE-BMCQ1 markNeeds review
The power input
to a centrifugal pump is a function of the volume flow rate
, impeller diameter
, rotational speed
, fluid density
, dynamic viscosity
, and surface roughness
. To carry out a dimensional analysis using Buckingham’s
theorem, which one of the following sets can be taken as the set of repeating variables?Your answerChoose one option.
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Open questionXE-BNAT1 markNeeds review
Consider the two-dimensional laminar flow of water (
) between two infinitely long parallel plates
apart as shown in the figure below. The velocity profile at any location is given by
where
is in m. The magnitude of shear stress (in
, rounded off to 2 decimal places) acting on the bottom plate is ________ 
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Open questionXE-BNAT1 markNeeds review
The maximum velocity in a fully developed laminar incompressible flow through a circular pipe of constant cross-sectional area is
. The average velocity (in m/s) of the flow is ________Log in to check the answer
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Open questionXE-BNAT1 markNeeds review
The theoretical discharge for the flow through an orificemeter is
. If the measured discharge in an experiment is
, then the discharge coefficient (rounded off to one decimal place) is ________Log in to check the answer
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Open questionXE-BMCQ2 marksNeeds review
Consider the flow between two infinitely long parallel plates of large width separated by a distance
. The upper plate is moving with a constant velocity
while the lower plate is stationary. The volumetric flow rate per unit width of the plate isYour answerChoose one option.
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Open questionXE-BMCQ2 marksNeeds review
The velocity field in Cartesian coordinates in a two-dimensional steady incompressible flow of a fluid with density
is
. Assuming no body and line forces, the magnitude of pressure gradient
at point
isYour answerChoose one option.
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Open questionXE-BMCQ2 marksNeeds review
A two-dimensional velocity field in Cartesian coordinates is defined by
. This flow isYour answerChoose one option.
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