A rod made of 60-40 brass is sliding over unlubricated hardened tool steel with a load of 320 N. The hardness of brass is 520 MN/m2. The wear co-efficient is 10-3. Find: a. The distance traveled to produce a wear of volume of 0.01 mm3 by the adhesive wear of the brass rod. b. The distance traveled, if additional load of 0.0069 kN is applied and a wear volume 7 mm3

If a particle moves along a path such that r : (3 sin t) m and ? : 2t rad, where t is in seconds. what is the particle's acceleration in m/s in 4 seconds? a)- 16.43 b)- 16.29 c)- 15.21 d)- 13.79

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

Most leaks in reciprocating air compressors can be detected and minimized by: (clo4) a)-detecting leakage areas using ultrasonic acoustic detector. b)-tightening joints and connections c)-replacing faulty equipment d)-all of the given options