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Determine its fracture angle if the material is ductile and fracture occurs, Neglect any discontinuity associated with the end closure.
What is the cruise altitude associated with the cruise speed? What is the drag coefficent assuming the maximum speed is for the same cruise speed.
Calculate the applied torque T in N-m-rad. Calculate the power transmitted through the shaft P in HP for the given rpm.
Knowing the coefficient of static friction between the vase and the cart is (us = .4), determine the maximum force (F) that can be applied if the vase is not to slide or tip.
The following locations from the leading edge of the plate: 0.1m and 0.3m. If the plate is 0.3m long and 0.3m wide, find the heat transfer rate and the drag forces associated with one side.
Viscosity of air at 300K is 18.537x10^-6 Pa-s and at 250K is 16.03x10^-6 Pa-s. What is the wind tunnel speed required for the Reynolds number of the model to match that of the full size aircraft?
Determine the support reactions at D. Determine the forces supported by all members. (forces on every two-force member and all forces on every joint).
The tubes are connected at the ends to form a composite shaft. The shaft is subjected to a torque of 12 kN m. Determine The maximum shearing stress in each material. The angle of twist in a 2 m leng
Determine the maximum shearing stress in the shaft at the rated load. The magnitude of the angle of twist in the shaft at the rated load.
Some heat is transferred to the surrounding atmosphere at 5C. Calculate, per kilogram of air passing through the turbine: - The heat transfer - The entropy change of the universe
The air does work in the amount of 30 kJ/kg and 14 kJ/kg of heat is removed from the air during the expansion. The initial volume is 0.00878 m3. Calculate the entropy change of the air per kilogram.
A Carnot refrigerator removes 16 000 kJ/min from a cold storage room at - 20C. Heat is discharged to the atmosphere at 20C. Determine the power required.
Determine (a) The mass flow rate ratio of air to steam, (b) The required rate of heat input in the combustion chamber, and (c) The thermal efficiency of the combined cycle.
Determine for the cycle (a) The rate of heat transfer to the working fluid passing through the steam generator, in kJ per kg of steam flowing (b) The thermal efficiency.
Saturated liquid exits the condenser at 6 kPa and the isentropic pump efficiency is 82%. (a) For T=580 degrees celcius, determine the turbine exit quality and the cylce thermal efficiency.
The readings of the testing machine indicates that the bar broke under an applied force of 2122 N. What is the flexural strength, in MPa, of the alumina bar?
Find the maximum altitude attained by the rocket. Ignore air friction. A force balance on the rocket yields the ordinary differential equation m(t)dVdt- b vd = -m(t)g , m(t) = m0 - b*t.
Calculate a) the fraction of the flow entering the separator that must be bled off b) the refrigeration capacity (assuming a condenser flow rate of 1 kg/sec) c) the coefficient of performance of the
If the air pressure and temperature at the start of the compression strike are 90 kPa and 25 degC find: the temperatures and pressures at each phase of the cycle; its thermal efficiency; and its net
Are the magnitudes of the steam flow rates through the high and low pressure turbines chosen with the turbine sizes/costs in mind, as in regenerative cycles?
If the condenser pressure is 50 kPa and the net power output is to be 60 MWatts, at what boiler pressure must the cycle operate?
Calculate the thermal efficiency of the cycle (a) if processes in turbine and compressor are ideal and (b) if the isentropic efficiencies of the turbine and compressor are 0.75 and 0.65, respectivel
Calculate (a) the compression ratio, (b) the cut-off ratio, (c) the heat input per cycle, (d) the heat rejected per cycle, (e) the net work output per cycle and (f) the thermal efficiency of the cyc
Also calculate the thermal efficiency and mean effective pressure for this cycle. Use constant specific heats at room temperature.
Assume that convective heat transfer coefficient between the dew and the air to be h=35 W/m^2-K, estimate the air temperature at which ice will begin to form (neglect heat loss/gain into the ground)