In increasing velocity ratio

In decreasing the slip of the belt

For automatic adjustment of belt position so that belt runs centrally

Increase belt and pulley life

**The acceleration of the particle moving with simple harmonic motion is _________ at the mean position.****The two elements of a pair are said to form a _________ when they permit relative motion between them.****The method of direct and reverse cranks is used in engines for****In a turning moment diagram, the variations of energy above and below the mean resisting torque line…****Creep in belt drive is due to****The relation between number of pairs (p) forming a kinematic chain and the number of links (l) is****Which of the following disciplines provides study of the relative motion between the parts of a machine…****Which of the following is an open pair?****Klein's construction gives a graphic construction for****The frictional torque transmitted in a flat pivot bearing, considering uniform wear, is (where μ…****The frictional torque transmitted in a conical pivot bearing, considering uniform pressure, is (where…****Which is the false statement about the properties of instantaneous centre?****Frequency of vibrations is usually expressed in****Angle of descent of cam is defined as the angle****The amplitude of vibration is always __________ the radius of the circle.****A simple spring-mass vibrating system has a natural frequency of fn. If the spring stiffness is halved…****A system in dynamic balance implies that****Which of the following property of the instantaneous centre is correct?****The frictional torque transmitted in a conical pivot bearing, considering uniform wear, is****The secondary unbalanced force is __________ the primary unbalanced force.****The frictional torque transmitted in a truncated conical pivot bearing, considering uniform pressure,…****The equation of motion for a single degree of freedom system with viscous damping is 4(dx²/dt²)…****The two elements of a pair are said to form a higher pair, when they****Torsional vibrations are said to occur when the particles of a body moves****Rectilinear motion of piston is converted into rotary by****If the pressure angle is __________, a reciprocating follower will jam in its bearings.****The sense of Coriolis component is such that it****The efficiency of a screw jack is maximum, when (where α = Helix angle, and φ = Angle of friction)****Cylindrical cams can be classified as****The axis of precession is __________ to the plane in which the axis of spin is going to rotate.**