Design three widlar current sources, each having a 100-μa reference current: one with a current transfer ratio of 0.8, one with a ratio of 0.10, and one with a ratio of 0.01, all assuming high β. for each, find the output resistance, and contrast it with ro of the basic unity-ratio source that is providing the desired current and for which re = 0. use β=[infinity]and va = 50 v.

Two flowing streams of argon gas are adiabatically mixed to form a single flow/stream. one stream is 1.5 kg/s at 400 kpa and 200 c while the second stream is 2kg/s at 500 kpa and 100 ? . it is stated that the exit state of the mixed single flow of argon gas is 150 c and 300 kpa. assuming there is no work output or input during the mixing process, does this process violate either the first or the second law or both? explain and state all your assumptions.

An electrical motor raises a 50kg load at a construct velencity .calculate the power of the motor, if it takes 40sec to raise the load through a height of 24m(take g =9.8n/g)

Coiled springs ought to be very strong and stiff. si3n4 is a strong, stiff material. would you select this material for a spring? explain.