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 DOM | ||
|---|---|---|
| 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 DOM Important Topics Questions
UNIT – I
FRICTION: Inclined plane, friction of screw and nuts, pivot and collar, uniform pressure,
uniform wear, friction circle and friction axis: lubricated surfaces, boundary friction, film
lubrication.
CLUTCHES: Friction clutches- single disc or plate clutch, multiple disc clutch, cone clutch,
centrifugal clutch.
BRAKES AND DYNAMOMETERS: Simple block brakes, internal expanding brake, band
brake of vehicle. General description and operation of dynamometers: Prony, Rope brake,
Epicyclic, Bevis Gibson and belt transmission,
UNIT – II
STATIC AND DYNAMIC FORCE ANALYSIS: Dynamic force analysis of four bar
mechanism and slider crank mechanism, inertia torque, angular velocity and acceleration of
connecting rod, crank effort TURNING MOMENT DIAGRAMS: Turning moment diagrams
– fluctuation of energy – fly wheels and their design.
UNIT-III
PRECESSION: Gyroscopes, effect of precession motion on the stability of moving vehicles
such as motor car, motor cycle, aero planes and ships.
GOVERNERS: Watt, porter and proell governors, spring loaded governors – Hartnell and Hartung
with auxiliary springs. sensitiveness, isochronism and hunting.
UNIT – IV
BALANCING: Balancing of rotating masses single and multiple – single and different planes,
use analytical and graphical methods. Primary, secondary, and higher balancing of reciprocating
masses. analytical and graphical methods, unbalanced forces and couples – examination of “V”
multi cylinder in line and radial engines for primary and secondary balancing, locomotive
balancing, hammer blow, swaying couple, variation of tractive effort.
UNIT – V
VIBRATIONS: Free Vibration of spring mass system –Natural frequency-types of damping –
damped free vibration, Simple problems on forced damped vibration, vibration isolation and
transmissibility transverse loads, vibrations of beams with concentrated and distributed loads.
Dunkerly’s methods, Raleigh’s method, whirling of shafts, critical speeds, torsional vibrations,
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