In a helical gear, the helix angle for a single helical gear ranges from _______.

In a screw thread, the nominal diameter represents the _________.

A feather key permits _____________.

Which one is used for obtaining constant velocity ratios?

The value of the included angle for a V-belt is _________.

_________ is used only for the transmission of bending moment.

____________ are used to connect two non-parallel or intersecting shafts which are coplanar in nature.

Calculate the solid length of a spring, given that the number of coils in the spring is 10 and the diameter of the spring wire is 2 millimeters.

__________ is fixed at one end and free at the other end.

Which bearing is a hydrodynamic lubricated bearing?

Calculate the bending stress induced in the shank of the bolt, given that the length of the bolt is 10 millimeters, Young's modulus of material of bolt is 2 x 105 newtons per square millimeter and the difference in height between the extreme corners of the nut is 3 millimeters.