Given vs(t) = [5cos 1000t + 4cos2000t + 3cos 4000t] V is the input of the system below. A 10V DC signal is added to vs(t) using a summing circuit and this DC offset signal is the input to a multiplier that multiplies the signal and a high frequency sinusoidal signal cos(100,000t) V. Plot the power spectrum of vout(t) in dBW.

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

Thermal stresses are developed in a metal when its a) initial temperature is changed b) final temperature is changed c) density is changed d) thermal deformation is prevented e) expansion is prevented f) contraction is prevented