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1. Explain why the bulk temperature defined by Eq. 7.7-3 is equal to T∞.
2. Air at atmospheric pressure and 90°F flows past a flat plate maintained at 600°F. The plate is 3 ft long and the air velocity is 105 ft/sec. Find the heat transferred from the plate, per foot of width.
3. Water at 100°F flows at a velocity of 14 ft/sec past a steam-heated tube 1 in. in diameter. If the outside surface of the tube is 187°F, find the heat transfer per unit length of tube.
The pressure at section (2) shown in Fig. P8.73 is not to fall below 60 psi when the flowrate from the tank varies from 0 to 1.0 cfs and the branch line is shut off.
air at 80 kpa 300 k and 250 ms enters a diffuser at a rate of 2.5 kgs and leaves at 315 k. the exit area of the
Superheated steam at 400°C and saturated water with a quality of 40% enter a mixing chamber at a pressure of 100 kPa. What is the required ratio of mass flow rate of superheated steam to mass flow rater of saturated water if at the exit to the mixing..
the fatigue data for a brass alloy are given as followsstress amplitude mpa -----------------cycles to failure310
State the name and purpose of the components shown in the circuit diagram.
a person pushes a car from rest adn accelerates to 4kmh in 5 seconds. the veolicty stays constant for 1km the first 500
Principles of Engineering Economic Analysis-Time value of money-use of gradient factor is expected
A magnetic pickup is used to detect the shaft speed of a turbocharger. A standard hexagonal nut is used to excite the pickup. If the shaft is turning at 50,000 rpm, how many positive impulses will be counted per second?
A cylindrical pressure vessel, with a diameter of 40cm and a wall thickness of 10mm is made of steel (isotropic, with Young's modulus = 200GPa; Poisson's ratio = 0.28) and is pressurized to 20MPa. The longitudinal and hoop stresses in the wall, σl an..
Determine also the weight of the rim of a rim-type steel flywheel of 250 mm mean diameter for the same allowable fluctuation in speed.
Schematically draw the evolution of the microstructure of Fe-C alloy as T decreases from 1000C to 500C, with the following composition (wt % of C)
two cars simultaneosly enter an intersection with 35 degrees between their headings. the car on the left weighs 5000
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