THEORY OF MACHINE QUIZ

Tension on slack side of belt

Radius of pulley

Tension on tight side of belt

All of these

Balancing partially reciprocating masses

Balancing partially revolving masses

All of these

Best balancing of engines

α = 90° + φ

α = 45° - φ/2

α = 45° + φ/2

α = 90° - φ

The centre of the disc has zero acceleration

The point on the disc making contact with the plane surface has zero acceleration

The centre of the disc has centrifugal acceleration

All points of the disc have the same velocity

Joining the corresponding points

Not possible to determine with these data

At 45° to line as per (A)

Perpendicular to line as per (A)

Oscillate with constant amplitude

Oscillate with increasing time period

Oscillate with decreasing amplitude

Return to equilibrium position without oscillation

Mechanical pair

Rolling pair

Closed pair

Open pair

(2/3) μ W R cosecα

(1/2) μ W R cosecα

(3/4) μ W R cosecα

μ W R cosecα

2π. √(g/l)

(1/2π). √(g/l)

(1/2π). √(l/g)

2π. √(l/g)

Motion of a square bar in a square hole

Motion of a piston in the cylinder of a steam engine

Motion of a shaft with collars at each end in a circular hole

All of these