Mechanical Engineering Answers

5. Why should acetylene gas cylinders used for gas welding be erected in upright position?

5. Why should acetylene gas cylinders used for gas welding be erected in upright position?

7. Is the procurement of third party insurance necessary to be incorporated in contract for construction works?

9. The insurance policy of insurance companies has changed recently. What is the major change?

A spring of free length 240 mm is 200 mm long when carrying a compressive load of 50 N. When fully compressed, the spring is 110 mm long. Calculate the spring rate and the work done in compressing the spring from 175 mm long to 120 mm in length. 

In your own words, explain the difference between an adjusting difference and timing difference and provide an example of each

there are required 124 ft-lb of work to compress a spring from its free length y1 to that of y2= 2.5 in; the constant scale is K=100 lbf/in. Find the free lenght

7. In prestressing work, if more than one wire or strand is included in the same duct, why should all wires/strands be stressed at the same time?

9. How to determine the size of elastomeric bearings?