Outdoor air enters an ac unit at 10℃ and 35 % relative humidity at a steady rate of 17 m3⁄ and it leaves at 25℃ and 65 % relative humidity. the outdoor air is first heated to 22℃ in the heating section and then humidified by the injection of hot steam in the humidifying section. assuming the entire process takes place at a pressure of 1 , determine (a) the rate of heat supply in the heating section and (b) the mass flow rate of steam required in the humidifying section.

Two technicians are discussing the intake air temperature (iat) sensor. technician a says that the computer uses the iat sensor as a backup to the engine coolant temperature (ect) sensor. technician b says that the powertrain control module (pcm) will subtract the calculated amount of fuel if the air measures hot. who is correct

The mass flow rate of the fluid remains constant in all steady flow process. a)- true b)- false

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