Theory of Machine
Which of the below are inversions of slider crank mechanism? 1. Oscillating cylinder engine mechanism 2. Toggle mechanism 3. Radial cylinder engine mechanism 4. Quick return mechanism

1, 2 and 4
2, 3 and 4
1, 3 and 4
1, 2 and 3

ANSWER DOWNLOAD EXAMIANS APP

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

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

ANSWER DOWNLOAD EXAMIANS APP