Asource follower is required to connect a high-resistance source to a load whose resistance is nominally 2 k but can be as low as 1.5 k and as high as 5 k. what is the maximum output resistance that the source follower must have if the output voltage is to remain within ±10% of nominal value? if the mosfet has kn = 2.5 ma/v2 , at what current id must it be biased? at what overdrive voltage is the mosfet operating?

The higher the astm grain-size number, the coarser the grain is. a)-true b)-false

Acarnot refrigerator operates in a room in which the temperature is 21°c and of power when operating. if the food compartment of the refrigerator is consumes 3 kw to be maintained at 2°c, determine (a) the coefficient of performance of the cycle and (b) the rate of heat removal from the food compartment. refrigerator cycle that has a higher coefficient of performance than that of the discussed (e) is it possible to develop a carn ot refrigerator, operating between the same temperature limits? explain

Air (c-1.006 kj/kg. k, r-0.287 kj/kg. k) enters a nozzle steadily at 280 kpa and 77°c with a velocity of 50 m/s and exits at 85 kpa and 320 m/s. the heat losses from the nozzle to the surrounding medium at 20°c are estimated to be 3.2 kj/kg. determine (a) the exit temperature and (b) the total entropy change for this process. solve this problem using constant specific heats.