Theory of Machine The frictional torque transmitted in a flat collar bearing, considering uniform pressure, is (where r₁ and r₂ = External and internal radii of collar respectively)

(1/2). μ W (r₁ + r₂)
(2/3). μ W (r₁ + r₂)
(2/3). μ W [(r₁³ - r₂³)/(r₁² - r₂²)]
(1/2). μ W [(r₁³ - r₂³)/(r₁² - r₂²)]

Theory of Machine A chain comprises of 5 links having 5 joints. Is it kinematic chain?

Data are insufficient to determine it
Yes
It is a marginal case
No

Theory of Machine An exact straight line motion mechanism is a

Peaucellier's mechanism
Hart's mechanism
Scott-Russell's mechanism
All of these

Theory of Machine If the rotating mass of a rim type flywheel is distributed on another rim type flywheel whose mean radius is half the mean radius of the former, then energy stored in the latter at the same speed will be

One fourth of the first one
Same as the first one
One and a half times the first one
Four times the first one

40°
10°
30°
20°

Theory of Machine The component of the acceleration, perpendicular to the velocity of the particle, at the given instant is called

Tangential component
None of these