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The temperature of argon at the outlet is 20oC. Determine the outlet pressure of air and the specific work produced by this turbine.
Consider X = Norm(5,7), Y = Norm(5,7) and Z = Norm(1,9) and assume X,Y and Z are independent. Find and sketch the probability density function of the random variable T = X-Y+Z
Nitrogen at 900kPa and 300oC is expanded adiabatically and reversibly in a closed system to 100kPa. Determine the minimum nitrogen temperature after the expansion.
Pure ethane at 400 degrees C is fed to the reactor, which operates isothermally at 100% ethane conversion. Calculate the required heat transfer to or from the reactor (state which it is) in kJ.
As the load on the motor is increased, the developed torque increases to 50 Ib-ft. Find the armature current required to produce the increased torque.
A 230-V shunt motor develops a torque of 40 Ib-ft when the armature current is 11 A. Find the torque developed when the current increase to 22 A and the field flux remains constant.
If the maximum torsional shear stress is limited to 10KSI, determine the minimum outer radius to the neares 1/8 in. Show all steps and calculations.
A 180-lb man and a 120-lb woman stand side by side at the same end of a 300-lb boat. Determine the velocity of the boat after they have both dived, if (a) the woman dives first, (b) the man dives firs
How larger surface edge crack can the advanced ceramics tolerate than the conventional ceramics for the same applies load?
In a spring mass system a 1kg block is dropped from a height of 1 meter on top of a spring with a spring constant (k) vlaue of 100N/m. Find the comression of the spring when the block is brought to
One structure is made from a Si3N4 plate which has a plane strain fracture toughness of 3.6. Calculate the maximum external crack that the ceramic structure can withstand. Assume Y=1.
It is highly desirable to make benzene from ethane (from shale gas) in a continious vapor-phase reaction. Calculate the required heat transfer to or from the reactor (state which it is) in kJ.
The thermal conductivities of cast iron and enamel are 50 and 1.05w/mk respectively. Calculate the resistance to the heat transfer for unit area, and the rate of heat transfer per unit area.
Steam having a mass of 3kg and initially at 2.5MPa and 350°C has 2460kJ of heat removed at constant temperature until the quality is 90%. Determine the pressure when dry saturated steam exists.
If the cooling water enters at a temperature of 20 degree C and exits at a temperature of 25 degree C and has a mass flow rate of 1 kg/s, determine the minimum power input of the compressor.
If the power output of the turbine is 2 MW, determine a) the isentropic efficiency of the turbine and b) the mass flow rate of the steam flowing through the turbine.
For the same power as in part (a), what is the maximum outside summer temperature for which the house can be maintained at 25 degrees celsius?
Saturated liquid leaves the heat exchanger at -10C with h = 185 kJ/kg, and the fluid leaves the compressor with h = 405 kJ/kg. Determine the ratio of the mass flow rates for the two cycles.
Determine the angular velocity (theta dot) of the combined body just after impact. Why is linear momentum of the system not conserved?
Investigate the time t required for the crate to come to rest and the corresponding distance x traveled if (a) theta=15 degrees and (b) theta= 30 degrees. Mk= 0.40.
Explain how multiple depths can be produced by chemical machining; also mention the relationship between width and depth in chemical machining.
Determine the time required from the beginning of the first hole to the completion of the last hole, assuming the most efficient drilling sequence will be used to accomplish the job.
You are blanking a square using a straight edge punch. If the punch is angled to be at a shear angle of 10 degrees, how much would the force be decreased?
Pool Ball B is to be shot into the side pocket D by banking it off the cushion at C. Specify the location x of the cushion impact for coefficient of restitution (a) e=1 and (b) e=0.8.
A gate is 0.5 m wide and 0.6 m tall and is hinged at the bottom. On one side the gate holds back a 0.5 m deep body of water. What jet speed V is required to hold the gate vertical?