Applied mechanics
Previous year question paper with solutions for Applied mechanics Dec-2018
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Question paper 1
SECTION-A
Q1. Fill in the blanks.
a. Weight is a ______ quantity
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Read moreb. The forces passing through the same point are called ______ force.
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Read morec. The angle of friction is always ________ then 900
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Read mored. The _______ effect of the force is called moment.
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Read moree. The efficiency of a screw jack may be increased by ______ its pitch.
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Read moref. C.G. is a term used for the bodies having _______ Only.
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Read moreg. Axis passing through the centroid of the plane lamina is called _____ axis.
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Read moreh. Rolling friction is always _______ then sliding friction.
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Read morei. In an ideal machine, velocity ratio = ________
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Read morej. Coefficient of friction is = ________/_______
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Read morek. The unit of moment in SI system is ________
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Read morel. A couple cannot be replaced by a _________ Force.
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Read morem. A machine is said to be irreversible if its efficiency is ________ then 50%.
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Read moren. One kilogram force is equal to _______ N
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Read moreo. Efficiency ________ as the load decreases.
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Read moreSECTION-B
Q2. Attempt any five questions.
i. Differentiate between center of gravity and centroid.
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ii. Explain the concept of rigid body and free body diagram.
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Read moreiii. Define Triangle Law of forces and Lami`s theorem.
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iv. Where the C.G. does lies of sphere, circular cone, and right circular cylinder?
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v. What do mean by moment center and moment arm and moment of a couple?
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vi. Define friction. Give merits and demerits of friction.
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vii. Establish a relation between efficiency, mechanical advantage and velocity ratio of a machine.
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SECTION-C
Q3. Attempt any three questions.
a. Find the magnitude and direction of the resultant of the following force system.
i. 30 N due north.
ii. 35 N due north-west.
iii. 15 N due east.
iv. 16 N due 450 west of south
v. 32 N due 750 North West
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b. An electric light fixture weighing 50N hangs from a point c, by two strings AC and BC. The string Ac is inclined at 600 to horizontal and BC at 450 to the vertical. Determine the forces in string AC and BC.
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Read morec. What do you mean by force? Explain Force system.
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Read mored. Derive an equation for equilibrium of a body lying on a rough inclined plane when the motion is in downward direction and force is acting parallel to the plane.
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