Problem : A vertical shaft 150 mm in diameter and rotating at 100 rpm rests on a flat end footstep bearing. The shaft carries.....
tom
Explain the working of rope brake dynamometer with neat sketch.
What are the types of kinematic pair ? Give its examples. .............MSBTE TOM SUMMER 2016 Q 2 b
Draw a labeled sketch of quick return mechanism of shaper and explain its working....
Quick return mechanism
What is centrifugal tension ? State its formula. Explain its effect on power transmitted by a belt drive
Give detailed classification of followers.
Procedure for balancing single rotating mass when its balancing mass is rotating in same plane:
Formulae to calculate the length of open belt drive and length of Cross belt drive
Formulae to calculate the length of open belt drive :
A Single slider crank mechanism:
Given: Crank AB = 20 mm = 0.02 m, C. R. BC = 80 mm = 0.08 m
N = 1000 rpm, ωBA= 2πN/60 = 2π x 1000/60 = 104.7 rad/sec
VBA = ωBA x AB = 104.7 x 0.02 = 2.09 m/s
From velocty diagram: Velocity of C w.r.t. B -
VCB = vector cb = 1.15 m/s
Angular velocity of Connecting rod ‘BC’ ωCB = VCB / CB = 1.15/0.08 = 14.375 rad /sec
Velocity of slider ‘C’
VC= vector ac = 2 m/sec
Space diagram 01 Mark, Velocity Diagram 02 marks , Calculations 01 Mark
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