Using the psychrometric chart, calculate the following:
1. The absolute humidity of air that has RH=40% and a dry bulb temperature 60oC.
2. The wet bulb temperature under these conditions.
3. The RH of air having a wet bulb temperature 44oC and a dry bulb
Temperature 70oC.
4. The dew point of air cooled adiabatically from RH 30% and a dry bulb
Temperature 50oC.
5. The change in RH of air with a wet bulb temperature 38oC, heated from 50oC to
86oC (dry bulb temperatures).

On a average work day more than work place firs are reorted

Ariver flows from north to south at 8 km/h. a boat is to cross this river from west to east at a speed of 20 km/h (speed of the boat with respect to the earth/ground). at what angle (in degrees) must the boat be pointed upstream such that it will proceed directly across the river (hint: find the speed of the boat with respect to water/river)? a 288 b. 21.8 c. 326 d. 30.2

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