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What is the specific enthalpy at the turbine entrance? (in BTU/lbm) What is the quality at the turbine exhaust? How much heat is added in the boiler?
What is the quality at the turbine exhaust? How much heat is added in the boiler? How much heat is transferred in the condenser? How What is the cycle thermal efficiency of this cycle?
A gas turbine operating on an ideal Brayton cycle has a pressure ratio of 7. Determine the gas temperatures at the turbine and compressor inlets, the back work ratio, and the thermal efficiency.
An ideal Diesel cycle has r=23 and r_c=1.86. Determine the specific net-work (i.e. net-work per unit mass flow) in terms of the initial temperature of the cycle.
Gorilla Glass is the trademark for a glass sheet manufactured by Corning. Explain key feature(s) of this glass and how they can be achieved in terms of process and the resulting structure.
Calculate the moisture content of the emerging chips and determine whether the design specification of less than 15% H2O has been achieved.
A converging-diverging nozzle, with Ae/At 5 1.633, is designed to operate with atmospheric pressure at the exit plane.
Determine the size of the shaft so that the maximum shear stress in the shaft does not exceed 80 MPa. Assume that the applied torque is 50 kN-m and the bending moment is 12 kN-m.
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.