CIRCULAR PITCH BE INCREASED WHICH OF THESE ARE EFFECTIVE IN AVOIDIN...
5. Circular pitch be increased
Which of these are effective in avoiding interference?
(a) 1, 2 and 3
(b) 2, 3, 4 and 5
(c) 1, 4 and 5
(d) 3, 4 and 5
IES-21Ans. (b)
IES-22. An external gear with 60 teeth meshes with a pinion of 20 teeth, module
being 6 mm. What is the centre distance in mm?
[IES-2009]
(a) 120 (b) 180
(c) 240 (d) 300
IES-22Ans. (c)
Centre distance in mm
m
T
T
(
)
=
+
1
2
2
6
60 20
=
240 mm
IES-23. Assertion
(A): An involute rack with 20° pressure angle meshes with a pinion of