Mechanical Engineering
GATE ME exam:gate PYQs
Build your understanding with focused practice from past exam papers.
Questions 31–40 of 1040. Imported answers require independent review unless marked reviewed.
Question 31
Open questionMEMCQ1 markNeeds review
Which one of the following options is NOT an error associated with Stereolithography (STL) file in additive manufacturing?
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Open questionMEMCQ1 markNeeds review
A work piece is to be firmly held in a fixture. It is to be machined by using a plain slab milling cutter as shown in the figure below. Which one of the following options is the most suitable value of height H of the fixture in mm?

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A two-dimensional surface profile is obtained over a sampling length by using a contact type stylus profilometer as shown in the figure below. A line AA parallel to the general lay of the trace is considered. The true heights from AA to the peaks and valleys (in μm) in the trace are also shown in the figure (not to scale). The ten-point height average in μm is

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Open questionMENAT1 markNeeds review
A steel plate having yield strength of 550 MPa, is subjected to biaxial state of stress as
and
. Using distortion energy theory and considering the factor of safety as 2, the permissible value of
that can be applied to the plate is ______ MPa (rounded off to 1 decimal place).Log in to check the answer
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Open questionMENAT1 markNeeds review
A sphere of radius 5 mm is initially in equilibrium at 400 °C in a furnace. It is suddenly removed from the furnace and dipped in a well-stirred water bath at 20 °C, with a convection heat transfer coefficient of 500 W/(m²K). For the given range of temperatures, the thermophysical properties of the material of the sphere are: density
kg/m³, thermal conductivity
W/(mK), and specific heat
J/(kg K). Neglecting radiation heat transfer, the time required for the centre of the sphere to cool from 400 °C to 50 °C is ______ seconds (rounded off to 2 decimal places).Log in to check the answer
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Open questionMEMCQ2 marksNeeds review
If
, where
, then which one of the following statements is correct?Your answerChoose one option.
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Consider the following differential equation
If
, then the solution of the differential equation isYour answerChoose one option.
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Open questionMEMCQ2 marksNeeds review
Let
be a function of
defined for all positive values of
. The Laplace transform of
denoted by
, provided that the integral exists where
is a parameter which may be a real or complex number.The Laplace transform of
isYour answerChoose one option.
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A student council of 10 members consists of two students from engineering school, three students from science school and five students from arts school. The university administration selects three students from the council at random. What is the chance that out of the selected students, two belong to the same school and the third belongs to different school?
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Open questionMEMCQ2 marksNeeds review
A cantilever beam of length
is subjected to a concentrated load
and a moment
as shown in the figure below. Neglecting the mass of the beam, which one of the following options is the correct representation of shear force diagram (SFD) and bending moment diagram (BMD)? 
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