A 1000 cubic centimeter spark ignition 4 stroke spark ignition engine with a compression ratio of 10 produces 100 kilowatt of power at 2000 rpm at wide open throttle. Calculate the engine's indicated thermal efficiency. Take all properties at standard atmospheric conditions. Assume K=1.36, 3 decimal places.

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

Which of the following refers to refers to how well the control system responds to sudden changes in the system. a)-transient regulation b)- distributed regulation c)-constant regulation d)-steady-state regulation

The characteristic roots of a dynamic system are: 1.7920 1.8160 i, -1.7920 1.8160 i, -0.4160 what is the order of this system? what are the settling time and damping ratio of the system?