Question

If more than one thread is cut in one lead distance of a screw, it is known as

(a) depth of thread

(b) single threaded screw

(c) multi threaded screw

(d) none of the mentioned

This question was posed to me by my school teacher while I was bunking the class.

Question is from Friction of a Body Lying on a Rough Inclined Plane topic in division Friction of Machine Kinematics

Answer 1

The correct answer is (c) multi threaded screw

To elaborate: If more than one thread is cut in one lead distance of a screw, it is known as multi-threaded screw e.g. in a double threaded screw, two threads are cut in one lead length. In such cases, all the threads run independently along the length of the rod.