78.

80.

81.

83.

The carburising

(ಸಿ)
(8)
ய
(0)

3! 1083001 ೧೯೧೦೮೨೨ 1 used for

softening the metal
hardening the outer surface of steel component while the core remain smooth

refining

1e grain structure

relieving the internal stres:

Guide ways of lathe beds are hardened by

(ಗಿ)
(€)

carburising (8) cyaniding
nitriding യു. 4

me hardening

The tooth profile most commonly used in gear drives for power transmission is

(A)
(2)

‎an involute‏ )8( لداعي د
‎an ellipse (D) a parabola‏

‎Quick return mechanism is an inversion of

‎(^)
‎0)

‎four har chain (B) single slider crank chain

‎double slider crank chain (D) crossed slider crank chail

‎The direction of linear velocity of any point on a link with respect to another point on the same link is

‎(A)
‎(B)
‎(^)
‎(0)

‎parallel to the link je

‎

‎पि

‎perpendicular to the link joining the po;

‎

‎at 45” w the link joining the point
none of these

‎The curve traced by the end of a thread as it is unwound from a stationary cylinder is known as

‎(A)
‎(त)

‎The power transmitted by a belt is maximum wher

‎(A)
‎<)

‎circle (8) வலயம்‌
epicycloid (D) involute

‎

‎the maximum tension in the belt(T) is equal to
‏٦7‎ (೫) 270
31௦ (ப) 415

‎Where Te=Centrifugal Tension

‎The velocity ratio of two pulleys connected by an open belt യ

‎(A)
‎(8)
‎(೮)
‎(D)

‎093/2017

‎

‎ടട belt is
directly proportional to the diameters

‎inversely proportional to the diameters

‎directly proportional to the square of the diameters

‎inversely proportional to the square of the diameters

‎12 ¢

‎