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1. Air ( γ=1.4 ) flows isentropically through a convergent-divergent nozzle from a reservoir at 400 K. If it is desired to discharge the flow at Ma=2 and 101 kPa,
(a) What should be the pressure at the upstream reservoir?
(b) What would be the pressure at the throat?
(c) What should be the ratio of the discharge area to the throat area?
(d) If the diameter of the nozzle at the throat is 2 cm. What is the mass flow rate of air?
(e) At what temperature will the air exit the nozzle?
2. Ethylene gas is to be delivered through a 6-in Schedule 80 pipe for a distance of 5 miles at a mass flow rate of 1 kg/s. The delivery pressure at the discharge must be 15 psig. The flow can be considered isothermal at 60 degrees F. Assuming ideal gas behavior, what should be the inlet pressure?
For the purpose of comparison, obtain the corresponding SOP circuit, and comment on the number of gates needed.
What other disease also increases the fitness of individuals with the mutations against the same environmental condition
Determine the pinch temperature and the minimum utility requirements for the process set out below. Take the minimum approach temperature as 15 °C. Devise a heat-exchanger network to achieve maximum energy recovery.
A certain ideal rocket with a nozzle area ratio of 2.3 and a throat area of 5 in. 2 delivers gases at k = 1.30 and R = 66 ft-lbf/lbm-? R at a chamber pressure of 300 psia and a constant chamber temperature of 5300? R against a back atmospheric pre..
If this machine is operated from a 440-V dc supply, determine the speed at which this motor will run and the current taken from the supply, assuming no mechanical load, no friction and wind age losses, and that the field current is maintained at 4..
Compute the increase in temperature and entropy if saturated liquid water at 10 kPa is pumped to a pressure of 9.0 MPa, if the pump is 75% efficient (where 100% efficiency would be reversible). You may use constant values and at these conditions.
Assuming that the flux corresponding to a current of 25 A is 40% of that corresponding to a current of 100 A, determine the motor speed at a line current of 25 A at 250 V.
It is 53.66% C and 4.09% H by mass. A titration required 18.02 mL of 0.0406 MNaOH to neutralize 0.3602 g carminic acid. Assuming that there is only one acidic hydrogen per molecule, what is the molecular formula of carminic acid?
Steam flows in a long, noninsulated pipe under a constant pressure of 2 bar. At the inlet of the pipe the temperature is 300 °C. Due to losses to the surroundings, the temperature at the exit of the pipe is 60 °C. Assume the surroundings to be at ..
How much transmit power is required (disregarding power losses at transmitter and receiver ends) for a maximum BER of 10-5, when using:a. Coherently detected BPSKb. By how much must transmit power be increased to maintain the maximum BER of 10-5 if t..
Consider the operation of a dc shunt motor that is affected by the following changes in its operating conditions. Explain the corresponding approximate changes in the armature current and speed of the machine for each change in operating condition..
Methyl ethyl ketone (MEK) is manufactured by the dehydrogenation of 2-butanol using a shell and tube type reactor. Flue gases are used for heating and pass though the tubes. The flue gases will contain traces of sulfur dioxide.
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