721.

18.

29.

80.

81.

82.

Which of the following is not a commaon section of V belts?
ஙா (2) ©
© E യു ^

A rack is a gear of infinite :

(^) श्लो (2) Module
(C) Diameter (D) Number of teeth _
‏سه» 0 قب‎
The circular pitch of a toothed wheel with 24 teeth and a module of 4.25 mm is :
(ಕ) 1.35 mm (B) 4.26 mm
0( 667 ‏سد‎ -(D) 13.35 ‏سد‎
‎The maximum efficiency of a worm and worm wheel system in terms of friction angle ® is :
(ಗಿ) 1 - ९०8 (1 + 008 0 (0) 1 - क्षप 2/1 + ०8 के
(0) 1 - 1 + शण फ (D) ‘1-tan ®/1+ tan &

In a multiple 01180 ഖി, nl and n2 are the number of dises on the driving and driven shafts
respectively. Then the number of pairs of contact surface is :

(ಯ) nl+n2 (B) nl+n2-1
{C) nl-n2 (D) None

The type of brakes commonly used in automobiles is :
(A) Shoe brake (0) Band brake
{C) Band and Block brake (D) None

A reverted gear train is one in which the output and input shaft :
(ക) Rotate in opposite directions (B) Are coaxial
(£) Are at right angles to each other (D) None

20° gears have a module pitch of 40 mm. The number of teeth on the gear is 40. If addendum
is equal to one module what is the radius of addendum cirele :

(ಗ) 36 mm (B) 42mm
(©) 56 mm (D) 94mm

When two spur gears having involute profiles on their teeth engage the line of action is
tangential to :

(५) Pitch circle (8) Dedundum circle
(0 Addendum ലയി (D) Base circle

3/2014 12 A