Stable
Isochronous
Unstable
None of these

P = W tan(φ - α)
P = W tan(α - φ)
P = W cos(α + φ)
P = W tan(α + φ)

Theory of Machine V-belts are usually used for

Long drives
None of these
Long and short drives
Short drives

Theory of Machine In elliptical trammels

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

Theory of Machine The natural frequency of free longitudinal vibrations is equal to (where m = Mass of the body, s = Stiffness of the body, and δ = Static deflection of the body)

Any one of the listed here
1/2π × √(g/δ)
1/2π × √(s/m)
0.4985/√δ

Theory of Machine In a four-bar chain it is required to give an oscillatory motion to the follower for a continuous rotation of the crank. For the lengths of 50 mm of crank and 70 mm of the follower, determine theoretical maximum length of coupler. The distance between fixed pivots of crank and followers is

45 mm
Slightly less than 95 mm
Slightly more than 95 mm
95 mm