1. Briefly discuss the principle on which a screw jack works and state its applications. 2. Explain the following terms: (i) Lead (ii) Pitch (iii) Lead angle 3. What is belt friction? State its...

1. Briefly discuss the principle on which a screw jack works and state its applications.

2. Explain the following terms:

(i) Lead

(ii) Pitch

(iii) Lead angle

3. What is belt friction? State its applications.

4. Determine an expression for the ratio of belt tensions in a flat belt drive.

5. Describe the wedge briefly and state its significance.

6. State the applications of a band brake in engineering.