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1 a heat engine operating on the carnot cycle has an efficiency of 65 the waste heat from the cycle is rejected to the
a 20ft long beam has a support reaction at each end and a 12ft long uniformly distributed load of 20lbft starting on
one half of a mole of air is taken through the following processes in a closed piston-cylinder arrangement from the
a certain power station produces an electrical output of 700 mw operating at 42 efficiency this plant uses a
on the alien planet there are 2916 goobs in a second there are 1222 liters per mabbox if one of the alien engineers
you arrived on an alien planet and are tasked with finding conversions between earth units and alien units you found
if 1 cubic foot is equal to 283168 liters and there are 60 seconds in a minute if a flow rate is 3 cubic feet per
a disc with radius r rotates at an angular speed of near a surface that is fixed the space between the disc and
consider a mixture of saturated liquid water and saturated steam at 2 bar and x 095 that is compressed adiabatically
an inventor claims to have developed a heat pump that produces a 200kw heating effect for a 20 degree celsius heated
1kg of a gas in a piston-cylinder assembly undergoes a carnot power cycle for which the isothermal expansion occurs at
consider a system consisting of liquid water initially at t1 318 k p1 35 bar undergoing a process to a final state at
consider a refrigerant 22 at 0oc that is going through a phase change from the saturated liquid to saturated vapor
using the appropriate table determine the change in specific entropy between the two specified states in btulbor show
using the appropriate table determine the indicated property in each case locate the state on sketches of the t-v and
in the preparation of he ch4 is removed but the gas composition contains a variation of co and co2 content the
in coal gasifiers refractories and metals must withstand the coalair or coaloxygen combusting atmospheres the zr-nb-ti
we wish to design an automatic speed control for an automobile assume that1 the car has a mass m of 1000 kg2 the
your company is considering creating an alumina coating by immersing an fe-si alloy into an al melt withdrawing the
describe what a riser is in the context of sand casting what are its main functions in light of chvorinovs rule what
a mold has a downsprue of length 60 in the cross-sectional area at the bottom of the sprue is 045 in2 the sprue leads
in the casting of steel under certain mold conditions the mold constant in chvorinovs rule is known to be 40 mincm2
a temperature measuring device with a time constant of 015 s outputs a voltage that is linearly proportional to
an inventor claims to have developed a power cycle operating between hot and cold reservoirs at 1175k and 295k
a 92 aluminium 8 copper alloy casting is made in a sand mold using a sand core that weighs 20 kg determine the buoyancy