Theory of Machine
The two elements of a pair are said to form a higher pair, when they

Have a surface contact when in motion
Have a line or point contact when in motion
Permit relative motion
Are kept in contact by the action of external forces, when in motion

ANSWER DOWNLOAD EXAMIANS APP

Theory of Machine
Which of the following statement is correct for involute gears?

The pressure angle is constant throughout the teeth engagement.
The interference is inherently absent.
A convex flank is always in contact with concave flank.
The variation in centre distance of shafts increases radial force.

ANSWER DOWNLOAD EXAMIANS APP

Theory of Machine
In a circular arc cam with roller follower, the acceleration in any position of the lift will depend only upon

Total lift, total angle of lift, minimum radius of cam and cam speed
Total lift, centre of gravity of the cam and cam speed
Radius of circular arc, cam speed, location of centre of circular arc and roller diameter
Mass of cam follower linkage, spring stiffness and cam speed

ANSWER DOWNLOAD EXAMIANS APP

Theory of Machine
In a cone pulley, if the sum of radii of the pulleys on the driving and driven shafts is constant, then

The drive is recommended depending upon the torque transmitted
Both open belt drive and crossed belt drive is recommended
Crossed belt drive is recommended
Open belt drive is recommended

ANSWER DOWNLOAD EXAMIANS APP

Theory of Machine
Two pulleys of radii r₁ and r₂ and at distance x apart are connected by means of an open belt drive. The length of the belt is

π (r₁ + r₂) + (r₁ + r₂)²/x + 2x
π (r₁ + r₂) + (r₁ - r₂)²/x + 2x
π (r₁ - r₂) + (r₁ - r₂)²/x + 2x
π (r₁ - r₂) + (r₁ + r₂)²/x + 2x

ANSWER DOWNLOAD EXAMIANS APP