b/L

b/2 L

1 - 2 b.L

1 - b/L

Gerber relation

Soderberg relation

Good man relation

none of these

The distance from a point on one thread to the corresponding point on the next thread is called pitch

The distance which a screw thread advances axially in one rotation of the nut is called lead

In single start threads, lead is equal to pitch

all of the above

Agree

Disagree

low coefficient of friction

better heat dissipation

smaller space consideration

all of these