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U n i t - 1
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.
U n i t - 2
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.
U n i t - 3
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.
U n i t - 4
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.
U n i t - 5
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 – Two and three rotor systems.