Aerospace Engineering
2020 · Paper 1
Take it one question at a time. Try an answer, then check your understanding.
Complete GATE AE 2020 Paper 1 overview, original pages and practice · Timed previous-paper practice
Questions 61–63 of 65. Imported answers require review unless explicitly marked reviewed.
Question 51
Open questionAENAT2 marksNeeds review
A critically damped single degree of freedom spring-mass-damper system used in a door closing mechanism becomes overdamped due to softening of the spring with extended use. If the new damping ratio (
) for overdamped condition is 1.2, the ratio of the original spring stiffness to the new spring stiffness (
), assuming that the other parameters remain unchanged, is ______ (round off to two decimal places).Log in to check the answer
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Open questionAENAT2 marksNeeds review
The two masses of the two degree of freedom system shown in the figure are given initial displacements of 2 cm (
) and 1.24 cm (
). The system starts to vibrate in the first mode. The first mode shape of this system is
, where
______ (round off to two decimal places).
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Open questionAENAT2 marksNeeds review
As shown in the figure, a beam of length 1 m is rigidly supported at one end and simply supported at the other. Under the action of a uniformly distributed load of 10 N/m, the magnitude of the normal reaction force at the simply supported end is ______ N (round off to two decimal places).
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