Differentiate between disc brake and internally expanding brake.
2016 WINTER
Define the following terms as applied to cam with neat sketch.
(1) Pitch circle- Circle drawn from centre of cam through pitch points.
(2) Pressure angle- Angle between direction of follower motion and normal to pitch curve.
(3) Stroke- Maximum travel of follower from its lowest position to top most position.
(4) Module –(Gears) – Ratio of pitch circle diameter in mm to No. of teeth on gear.
In a band and block brake shown in Fig.......
Draw profile of cam to raise the valve with S.H.M. through 5cm..........
In a slider crank mechanism the length of crank and connecting rod are 100mm ..........
Explain the process of balancing of single rotating mass by a single mass rotating in the same plane.
m = Mass attached to shafts,
r = Distance of CG from axis of rotation.
Consider mass ‘m’ is attached to rotating shaft at a radius are then the centrifugal force exerted by mass ‘M’ on the shaft is
Fc = Mw2R Where,
W = Angular velocity of shaft
R = Distance of CG from axis of rotation
M = Mass attached to shaft.
Explain the working of internal expanding shoe brake with the help of neat sketch.
Discuss the working of Rope brake dynamometer with the help of a neat sketch.
Distinguish between flywheel and governor.
Describe with neat sketch the working of Oldham’s coupling.
Pages
