A $${20^ \circ }$$ full depth involute spur pinion of $$4mm$$ module and $$21$$ teeth is to transmit $$15kW$$ at $$960rpm.$$ Its face width is $$25mm.$$

The tangential force transmitted (in N) is

The minimum shear strain in orthogonal turning with a cutting tool of zero rake angle is

Two streams of liquid metal, which are not hot enough to fuse properly, result into a casting defect known as

Match the following