For crank shaft bearings, the ratio of the length of the journal to its diameter is less than unity.

 
In order to determine the stresses in a thin cylinder due to an internal pressure, it is assumed that

 
In a V-belt drive, the belt makes contact at the bottom of the groove of the pulley.

A wood-ruff key is

For a shaft diameter of 100 mm, the number of bolts in a flange coupling should be

A circular shaft can transmit a torque of 5 kN-m. If the torque is
reduced to 4 kN-m, then the maximum value of bending moment that can be
applied to the shaft is

The design of pin of a rocker arm of an I.C. engine is based on

The helix angle for single helical gears ranges from

The property of a material which enables it to be drawn into wires with the application of a tensile force, is called

The initial
tension (in newtons) in a bolt used for making a fluid tight joint like
steam engine cover joints, is calculated by the relation (where d = Nominal diameter of bolt in mm)