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The temperature inside a Carnot refrigerator is maintained at 5 degrees C by rejecting heat to the surrounings at an ambient temperature of 27 degrees C. The inside temperature now decreases to -13 degrees C with the ambient temperature remaining constant at 27 degrees C. Determine the percent increase in work input for the same quantity of heat, Q sub L, removed.
water enters a steam generator as compressed liquid at 100 c 6mpa and exits as superheated vapor at 500 c 6mpa constant
What is the difference between sensor less ECS and sensor end ECS. Can a motor with a sensor less ECS be programmed into a controller and be programmed autonomously?
1. what is meant by toughness? how does it differ from strength?2. why is there a transition from ductile to brittle
Water is being pumped from a large lake to a reservoir 30 m above at a rate of 5x10-3 m3/s by a 12 kW (shaft) pump. If the irreversible head loss of the piping system is 8m, determine the mechanical efficiency of the pump.
calculate the escape speed from the earth for a 4800 kg spacecraft and determine the kinetic energy it must have at the
a rigid 2-ft3 vessel contains water originally at 150of and 5.07 percent quality. the water is then heated until its
a cantilevered steel pipe tower 80 m tall is being considered for a new wind turbine. the weight of the turbine is 3400
1. half a mole of a monoatomic ideal gas is initially at 1000 k and a pressure of 20 bar. it is expanded adiabatically
air is compressed in a standard compressor. its intital state is 100 kpa at 17 c and its final state is 600 kpa and 57
A first class lever in static equilibruim has a 50 lb resistance force and 15 lb effort force. The lever's effort force is located 4 ft from the fulcrum. What is the actual mechanical advantage of the system?
a boy places his glass marbles in an oven at 200degreec. the diameter of the marbles is 15 mm. after a while he takes
it is highly desirable to make benzene from ethane from shale gas in a continious vapor-phase reaction3c2h6 --gt c6h6
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