Suppose a conventional water bottle cap is made with a single-start thread of 0.125 in pitch. Further suppose that the lid must be rotated 2.75 times to com- pletely close the bottle, requiring the typical use to re-clutch the lid approximately 4 times to screw the lid shut. If the lid is re-designed with exactly the same pitch, but three starts, rather than one, how many times must the lid be rotated to completely close the bottle?

When at a point two solid phase changes to one solid phase on cooling then it is known as a) eutectoid point b) eutectic point c) peritectic point d) peritectoid point

What precautions should you take to prevent injuries when dealing with heavy loads?

Afour cylinder four-stroke in-line engine has a stroke of 160mm, connecting rod length of 150mm, a reciprocating mass of 3kg and its firing order is 1-3-4-2. the spacing between cylinders is 100mm. i. show that the engine is in balance with regard to the primary inertia forces and primary 3. a and secondary inertia couples. li determine the out of balance secondary inertia force ii. propose ways of balancing this out of balance force and discuss the challenges that will arise