En la figura se representa un tren de engranajes. El engranaje del eje motriz A, tiene 18 dientes. En el eje intermedio B hay montado un engranaje doble de 45 y 18 dientes. En el eje de salida C hay un engranaje de 58 dientes. a) Si el eje motriz gira a 1000 rpm, ¿a qué velocidad gira el eje de salida? b) ¿Cuántas vueltas da el eje C por cada 100 vueltas del eje A

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.

Give heat transfer applications for the following, (i) gas turbines (propulsion) ) gas turbines (power generation). (iii) steam turbines. (iv) combined heat and power (chp). (v) automotive engines

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