Question 1:
Describe the five factors formulated by the pugsley for safety factor.
Question 2:
How does notch sensitivity affect fatigue failure compared to other factors?
Question 3:
Illustrate out the term tolerance zone. Explain with neat sketch.
Question 4:
What do you mean by the term surface roughness index?
Question 5:
Illustrate out the term piston slap.
Question 6:
Compute piston pin diameter with I/d ratio of 1.1. The limiting bearing pressure is the 30MPa. The load acting on piston pin is 45 kN.
Question 7:
Compute the cap bolt size subjected to preload of 7 kN and internal force of the 18kN. Yield stress is 400 MPa, endurance stress is 100 MPa and factor of safety is 2.
Question 8:
Illustrate out the term firing order. Mention its significance.
Question 9:
Which valve is bigger in size? Give explanation for.