most expected questions in Engg mechanics

MOST EXPECTED QUESTIONS IN ENGG MECHANICS
State and prove perpendicular axis theorem for moment of inertia.
State and prove parallel axis theorem
Derive expression for centroid of triangular area of base (B) and height (H)
State laws of static and dynamic friction
Define the terms centroid and moment of inertia
Define the trems centroid and moment of inertia
Write short notes on
Radius of gyration
Product of inertia
Define angle of friction and angle of repose and prove that fro limiting condition both are equal.
Prepare numericals for CG and MI, for shapes as asked in las year’s papers.

Discuss advantages of method of sections for analysis of trusses. Write steps for solving trusses by method of sections.
What is meant by principle of virtual work.
State Assumptions made in analysis of a plane truss

Explain
Law of machine
Self locking machine
Velocity ratio
Explain with sketches simple and compound gear trains
Define and differentiate between initial tension and centrifugal tension in a belt drive
Find condition of irreversibility of a machine
Enumerate merits of rope drive over belt drive
Enumerate the advantages of gear drives over belt and rope drives
Explain the law of machine
Prove that the condition for self locking machine is that its efficiency is less than 50%
Prepare numericals for Belt drive, all types as asked in lasy year’s papers ( keep special watch on unit conversions and formulas to be used)
Prove relation ship T1/T2 = eμθ

Deduce relationship between SF and BM.
Prepare BM and SF numericals specially for Overhang cases and simply supported cases

State and explain principle of moments
Same material is also available on http://www.studypages.blogspot.com/State and prove Varignon’s theorem. Explain its application in non concurrent forces