The stress components at a given point in an engineering component are estimated to be xx= 4.1 ksi, yy= 0 ksi, zz= 0.9 ksi, xy= −3.1ksi, yz= 1.2 ksi, xz= 0 ksi. Estimate the factor of safety against yielding using Von Mises theory if the uniaxial yield stress of the material is SY = 17.2 ksi.

Heat is added to a piston-cylinder device filled with 2 kg of air to raise its temperature 400 c from an initial temperature of t1 27 cand pressure of pi 1 mpa. the process is isobaric process. find a)-the final pressure p2 b)-the heat transfer to the air.

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 temperature of air decreases as it is compressed by an adiabatic compressor. a)- true b)- false