One of the best ways to find a vacuum leak on a speed-density fuel-injection system is to read the intake air controller (LAC) count, or percentage, with a scan tool. Normal IAC percentage is usually 15 to 25. A reading of less than indicates vacuum leak.
O A.5
OB. 10
O C.25
O D. 15

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

Fluids at rest possess no flow energy. a)- true b)- false

Along 8-cm diameter steam pipe whose external surface temperature is 900c connects two buildings. the pipe is exposed to ambient air at 70c with a wind speed of 50 km/hr blowing across the pipe. determine the heat loss from the pipe per unit length. (b) air at 500c enters a section of a rectangular duct (15 cm x 20 cm) at an average velocity of 7 m/s. if the walls of the duct are maintained at 100c. a) the length of the tube for an exit temperature of the air to be 40 0c. b)the rate of heat transfer from the air. c) the fan power needed to overcome the pressure drop in this section of the duct.