technician A says that the fuel tank cap has a valve to prevent pressure build up in the tank. Technician B says that the cap has a valve to prevent vacuum build up in the tank. Who is right?

Engineering Utilities Please answer in paragraph form. UPVOTE will be given.  Discuss/Explain the principle of compressed air system.

If the wt% Ethanol is 27% what is the specific gravity?

The mass flow rate is   , the volume flow rate is   , density is , and the specific volume is . What is (are) the correct expression (s) below?_________     A.     B.     C.     D.

INTRODUCTION ABOUT VALVE SYSTEM IN INTERNAL COMBUSTION ENGINE

Briefly describe a combination-dependent leak.

How does an injector-type mixing chamber work?

Which of the following statement about carbon dioxide is not true? a. CO2 , levels are highest when the air fuel ratio is slightly leaner than stoichiometric. b. The production CO2  , is directly related to the amount of fuel consumed; therfore, more fuel efficient engines produce less CO2 c. To reduce CO2 , levels in the exhaust, engineers are working hard    to decrease fuel consumption to keep CO2  low. d. The concern for CO2 emissions is on of the primary reasons for the delayed use of alternative fuels for automobiles.

c) exhaust Q2.A/ Explain the operation and benefits of AMT. Q2.B/ Explain the cylinder deactivation and how it's done. Q3.A/ What is the VEL system and How it's work? Q3.B/ Explain the Kinetic Energy Recovery System (KERS). Q4.A/ What is "Over-boosting"? What is the risks of it? 01 B/Engine Downsizing is very famous in modern engines ... Expand. علم