All Materials regarding to B.tech R-20 in Mechanical Engineering in 2nd Year 2nd Semester with unit wise for Every Subjects are available.
👇👇Scroll Down for Important Questions and Topics Unit Wise 👇👇
| Mech 2-2 TE-1 | ||
|---|---|---|
| S.No | Chapters / Units | Download Link |
| 1 | Unit 1 | Download |
| 2 | Unit 2 | Download |
| 3 | Unit 3 | Download |
| 4 | Unit 4 | Download |
| 5 | Unit 5 | Download |
Mech 2-2 TE-1 Important Topics Questions
UNIT – I
MECHANISMS : Elements or Links – Classification – Rigid Link, flexible and fluid link – Types
of kinematic pairs – sliding, turning, rolling, screw and spherical pairs – lower and higher pairs –
closed and open pairs – constrained motion – completely, partially or successfully constrained and
incompletely constrained.
Grashoff’slaw , Degrees of freedom ,Kutzbachcriterian for planar mechanisms, Mechanism and
machines – classification of machines – kinematic chain – inversion of mechanism – inversions of
quadric cycle chain – single and double slider crankchains.
UNIT – II
LOWER PAIR MECHANISM: Exact and approximate copiers and generated types –
Peaucellier, Hart and Scott Russul – Grasshopper – Watt T. Chebicheff and Robert Mechanisms
and straight line motion, Pantograph.
Conditions for correct steering – Davis Steering gear, Ackermans steering gear – velocity ratio;
Hooke’s Joint: Single and double – Universal coupling–application–problems.
UNIT – III
KINEMATICS: Velocity and acceleration – Motion of a link in machine – Determination of
Velocity and acceleration diagrams – Graphical method – Application of relative velocity method
four bar chain. Velocity and acceleration analysis of for a given mechanism, Klein’s construction,
determination of Coriolis component of acceleration.
PLANE MOTION OF BODY: Instantaneous center of rotation, centroids and axodes – relative
motion between two bodies – Three centres in line theorem – Graphical determination of
instantaneous centre, diagrams for simple mechanisms and determination of angular velocity of
points and links.
UNIT – IV
CAMS: Definitions of cam and followers – their uses – Types of followers and cams –
Terminology – Types of follower motion: Uniform velocity, Simple harmonic motion and uniform
acceleration and retardation. Maximum velocity and maximum acceleration during outward and
return strokes in the above 3cases.
Analysis of motion of followers: Roller follower – circular cam with straight, concave and convex
flanks.
BELT DRIVES: Introduction, Belt and rope drives, selection of belt drive- types of belt drives,V-
belts, materials used for belt and rope drives, velocity ratio of belt drives, slip of belt, creep of belt,
tensions for flat belt drive, angle of contact, centrifugal tension, maximum tension of belt, Chains-
length, angular speed ratio, classification of chains.
UNIT – V
GEARS: Higher pairs, friction wheels and toothed gears–types – law of gearing, condition for
constant velocity ratio for transmission of motion, Form of teeth: cycloidal and involute profiles.
Velocity of sliding – phenomena of interferences – Methods of interference. Condition for
minimum number of teeth to avoid interference, expressions for arc of contact and path of contact
– Introduction to Helical, Bevel and worm gearing.
GEAR TRAINS: Introduction to gear Trains, Train value, Types – Simple and reverted wheel
train – Epicyclic gear Train. Methods of finding train value or velocity ratio – Epicyclic gear
trains. Selection of gear box-Differential gear for an automobile.
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