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The cross section of a bimetallic strip is shown in the figure. Assuming that the moduli of elasticity for metals A and B are EA= 168 GPa and EB = 90 GPa, respectively, determine the smaller of the two section moduli for the beam. (Recall that section modulus is equal to bending moment divided by maximum bending stress.) In which material does the maximum stress occur?
it has been shown that the cop for a carnot refrigerator. is greater than the cop for a real refrigerator . show the
a steady flow of liquid ethylene glycol inside finned tubing is cooled from an inlet state of 85c and 2000kpa to an
refrigerant-134a enters the condenser of a residential heat pump at 800 kpa and 35 degrees c at a rate of 0.018 kgs and
Two black square plates of size 2 by 2 m are placed parallel to each other at a distance of 0.5 m. One plate is maintained at a temperature of 1000oC and the other at 500oC. Find the heat exchange between the plates.
It is proposed to build a one million kW electric power plant with steam as the working fluid. The condensers are to be cooled with river water at a flow rate of 5 x 108 lbm/hr. The maximum steam temperature will be 1000 F and the pressure in the con..
An air conditioner in the airport of Timbuktu runs a cooling system using R-410a with a high pressure of 1500 kPa and a low pressure of 200 kPa. It should cool the desert air at 45 degrees C down to 15 degrees C. Find the cycle COP. Will the syste..
To finding in Law of parallelogarm forces We take Q sin? (Along Vertical Side) & Q cos? (Along Horizontal Side)
Explore the effect of the insulation thickness on the temperature of the aluminum and the heat loss per unit tube length
Air at 300 kPa, 63oC, and a velocity of 423 m/s enters an insulated duct of varying cross-sectional area. The air exits at 150 kPa, 88oC. At the inlet, the cross-sectional area is 6.57 cm2.
Electric power is generated by installing a high powered turbine-generator at a site 120 m below the free surface of a large water reservoir. Determine the power generation potential if the water can be steadily supplied at 2.4 m^3/s. Assume a densit..
a 4 m3 storage tank containing 2 m3 of liquid is about to be pressurized with air from a large high-pressure reservoir
Determine an expression for the number of cycles to failure, Nf if the initial crack size is a0. State any assumptions you make.
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