Theory of Machine
The two links OA and OB are connected by a pin joint at O. If the link OA turns with angular velocity ω₁ rad/s in the clockwise direction and the link OB turns with angular velocity ω₂ rad/s in the clockwise direction, then the rubbing velocity at the pin joint O is (where r = Radius of the pin at O)

(ω₁ - ω₂)r
(ω₁ - ω₂)2r
ω₁.ω₂.r
(ω₁ + ω₂)r

ANSWER DOWNLOAD EXAMIANS APP

Theory of Machine
The relation l = (2/3).(j + 2) apply only to kinematic chains in which lower pairs are used. This may be used to kinematic chains in which higher pairs are used, but each higher pair may be taken as equivalent to

Any one of these
Two lower pairs and two additional links
One lower pair and two additional links
Two lower pairs and one additional link

ANSWER DOWNLOAD EXAMIANS APP

Theory of Machine
Angle of action of cam is defined as the angle

Moved by the cam from beginning of ascent to the termination of descent
Through which the cam rotates during the period in which the follower remains in the highest position
Moved by the cam from the instant the follower begins to rise, till it reaches its highest position
Of rotation of the cam for a definite displacement of the follower

ANSWER DOWNLOAD EXAMIANS APP

Theory of Machine
In elliptical trammels

Three pairs turning and one pair sliding
All four pairs are turning
One pair turning and three pairs sliding
Two pairs turning and two pairs sliding

ANSWER DOWNLOAD EXAMIANS APP
MORE MCQ ON Theory of Machine