Fie mecanismul din figura de mai jos alcătuit din doua bare articulate și un disc. Cunoscandu-se viteza unghiulară a barei OA, dimensiunile barelor și raza discului, se cere sa se determine centrele instantanee de rotație, vitezele unghiulare, viteza punctului B, viteza minima atinsa de bara, viteza maxima de pe disc. Se cunosc OA=AB=2R alfa=45 grade

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

Aloaded platform of total mass 500 kg is supported by a dashpot and by a set of springs of effective stiffness 72 kn/m. it is observed that when the platform is depressed through a distance x = 12.5 cm below its equilibrium position and then released without any initial velocity; it reaches its equilibrium position in the shortest possible time without overshoot. find the position and velocity of the loaded platform 0.10 sec. after its release. if a further load of 400 kg is added to the platform, find, i) the frequency of damped vibrations, and i) the amplitude of vibration after 2 complete oscillations, given that the initial amplitude is 15 cm.