Mechanical Engineering
2018 · Paper 2
Take it one question at a time. Try an answer, then check your understanding.
Complete GATE ME 2018 Paper 2 overview, original pages and practice · Timed previous-paper practice
Questions 31–33 of 65. Imported answers require review unless explicitly marked reviewed.
Question 21
Open questionMENAT1 markNeeds review
Fatigue life of a material for a fully reversed loading condition is estimated from
where
is the stress amplitude in MPa and
is the failure life in cycles. The maximum allowable stress amplitude (in MPa) for a life of
cycles under the same loading condition is ______ (correct to two decimal places).Log in to check the answer
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The viscous laminar flow of air over a flat plate results in the formation of a boundary layer. The boundary layer thickness at the end of the plate of length L is
. When the plate length is increased to twice its original length, the percentage change in laminar boundary layer thickness at the end of the plate (with respect to
) is ________ (correct to two decimal places).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 23
Open questionMENAT1 markNeeds review
An engine operates on the reversible cycle as shown in the figure. The work output from the engine (in kJ/cycle) is ______ (correct to two decimal places).
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