Minimum number of teeth for involute rack and pinion arrangement for pressure angle of 20° is
A. 10
B. 20
C. 30
D. 34
Answer: Option A
This Question Belongs to Mechanical Engineering >> Theory Of Machine
Join The Discussion
Comments ( 5 )
Related Questions on Theory of Machine
In considering friction of a V-thread, the virtual coefficient of friction (μ1) is given by
A. μ1 = μsinβ
B. μ1 = μcosβ
C. $${\mu _1} = \frac{\mu }{{\sin \beta }}$$
D. $${\mu _1} = \frac{\mu }{{\cos \beta }}$$
The lower pairs are _________ pairs.
A. Self-closed
B. Force-closed
C. Friction closed
D. None of these
In a coupling rod of a locomotive, each of the four pairs is a ________ pair.
A. Sliding
B. Turning
C. Rolling
D. Screw
A kinematic chain is known as a mechanism when
A. None of the links is fixed
B. One of the links is fixed
C. Two of the links are fixed
D. None of these
Wrong
Min no of teeth =(2*addenda)/sin^2¢
For 14.5 degree full depth=32
For 20 degree full depth=18
For 20 degree stub =14
B. 20
The minimum number of teeth on the pinion in order to avoid interference for 14.50 full depth involute are 32 and for 200 full depth involute teeth are 18. Explanation: Interference occurs when the number of teeth on the smaller of the two meshing gears is less than a required minimum.
17 likho b....