Previous year question paper for AM (Diploma Electronics and Communication Engineering 1st-2nd)

Applied Mechanics

Previous year question paper with solutions for Applied Mechanics from 2014 to 2018

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1. Introduction (04hrs)

1.1 Concept of engineering mechanics definition of mechanics, statics, dynamics,

application of engineering mechanics in practical fields. Definition of Applied


1.2 Definition, basic quantities and derived quantities of basic units and derived units

1.3 Different systems of units (FPS, CGS, MKS and SI) and their conversion from

one to another for density, force, pressure, work, power, velocity, acceleration

1.4 Concept of rigid body, scalar and vector quantities

2. Laws of forces (09 hrs)

2.1 Definition of force, measurement of force in SI units, its representation, types of

force: Point force/concentrated force & Uniformly distributed force, effects of

force, characteristics of a force

2.2 Different force systems (coplanar and non-coplanar), principle of transmissibility

of forces, law of super-position

2.3 Composition and resolution of coplanar concurrent forces, resultant force, method

of composition of forces, laws of forces, triangle law of forces, polygon law of

forces - graphically, analytically, resolution of forces, resolving a force into two

rectangular components

2.4 Free body diagram

2.5 Equilibrant force and its determination

2.6 Lami's theorem (concept only)

[Simple problems on above topics]

3. Moment (09 hrs)

3.1 Concept of moment

3.2 Moment of a force and units of moment

3.3 Varignon's theorem (definition only)

3.4 Principle of moment and its applications (Levers – simple and compound, steel

yard, safety valve, reaction at support)

3.5 Parallel forces (like and unlike parallel force), calculating their resultant

3.6 Concept of couple, its properties and effects


3.7 General conditions of equilibrium of bodies under coplanar forces

3.8 Position of resultant force by moment

4. Friction (06 hrs)

4.1 Definition and concept of friction, types of friction, force of friction

4.2 Laws of static friction, coefficient of friction, angle of friction, angle of repose,

cone of friction

4.3 Equilibrium of a body lying on a horizontal plane, equilibrium of a body lying on

a rough inclined plane.

5. Centre of Gravity (08 hrs)

5.1 Concept, definition of centroid of plain figures and centre of gravity of

symmetrical solid bodies

5.2 Determination of centroid of plain and composite lamina using moment method

only, centroid of bodies with removed portion

5.3 Determination of center of gravity of solid bodies - cone, cylinder, hemisphere

and sphere; composite bodies and bodies with portion removed

[Simple problems on the above topics]

6. Simple Machines (06 hrs)

6.1 Definition of effort, velocity ratio, mechanical advantage and efficiency of a

machine and their relationship, law of machines

6.2 Simple and compound machine (Examples)

6.3 Definition of ideal machine, reversible and self locking machine

6.4 Effort lost in friction, Load lost in friction, determination of maximum

mechanical advantage and maximum efficiency

6.5 System of pulleys (first, second, third system of pulleys), determination of

velocity ratio, mechanical advantage and efficiency

6.6 Working principle and application of wheel and axle, Weston’s Differential

Pulley Block, simple screw jack, worm and worm wheel, single and double winch

crab. Expression for their velocity ratio and field of their application

[Simple problems on the above topics]

7. Torsion (06 hrs)

7.1 Torsion in shafts/bars

7.2 Modulus of rigidity

7.3 Torsional Equation (simple numerical problems)

7.4 Power Transmission in shafts (simple numerical problems)