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The power input to the compressor is 2.6 kW. Neglect kinetic and potential energy changes. Determine the mass flow of 134a, in kg/min, assuming that no heat is crossing the control volume boundary.
Determine the value of the normal reaction force between A and B as well as the magnitude of their acceleration if θ = 20 degrees. Friction between the seld and the incline is negligible.
The mass flow rate is 1.5 kg/s. Neglecting heat transfer and potential energy, determine the exit velocity in m/s and the exit flow area in cm^2.
Find the exit temperature and volume flow rate. Assume the gas has almost constant specific heats at temperatures 20°C to 200°C.
Estimate the factor of safety guarding against fatigue failure for the following loading conditions. The shaft is subjected to a completely reversed torque of 120 N • m in phase with a completely
The azimuth from station A of a link traverse to an azimuth mark is 212o 12' 36". What is the angular misclosure of this link traverse?
Total extend time for drill feed is 30 seconds with drilling portion of cycle being 28 seconds. the drill motor runs 800 rpm using 28 l/sec (60 cfm) at 3.4 bar (50 psi). what are the necessary Cvs f
If this component is subjected to the following state of stress, determine the safety factor against yielding by the maximum shear stress criterion.
A bending moment of 3 kN-m, and a torque of 5 kN-m. A safety factor against yielding of 2 is required. What minimum yield strength must the shaft material have?
Consider the following state of stress (MPa): σ(sigma)x = 82, σ(sigma)y = 16, σ(sigma)z = 40, τ(tao)xy = 15, τ(tao)yz = -5, τ(tao)zx = 22. Determine the following P
While an oil well is being drilled at a depth of 6000 ft. Using G 5 11.2 3 106 psi, determine the maximum shearing stress in the pipe caused by torsion.
If the net power out is 70MW determine the mass flow rate of the air using constant specific heats For: An ideal cycle When the compressor and turbine efficiencies are 85%.
A wall is composed of a 12-cm-thick layer of material A and a 20-cm-thick layer of material B. What are the rates of heat flow, per square meter of wall area, before and after the insulation is added?
Air from the surroundings enters the tank at a rate of 1.81 kg/s. Using the ideal gas model for air, find the pressure in the tank after 30 s if the temperature is 21.1?
Determine the angular acceleration of the blade assembly, knowing that at the instant shown the angular velocity and angular acceleration of the motor housing are respectively w2= -2.5 rpm j and alp
The temperature stays constant at 290 K. For the air, determine the total amount of energy transfer by work and by heat, each in kJ. Assume ideal gas behavior.
Determine the increase in internal energy of the system in the auditorium during the first 20 minutes after the ventilation system fails.
After 42s, the center of the sphere is measured to be 100C. Estimate the convective heat-transfer coefficient for the cooling process.
Two circular aluminum pipes of equal length L = 24 in are loaded by torsional moments T. Find the maximum acceptable torques that can be applied to Pipe 1 and Pipe 2.
The heat added in the combustion process is 400 But/lbm. Find: Using variable specific heat method The highest temperature in the cycle The mass flow rate of the air.
If this is accomplised using a series of He-Ne lasers with wavelength=633 nm. What is the speed of the spaceship after one year?
Once it stops at this more heat is added until it is 300kPa. Ambient temp is 300k. Find the heat transferred and work done from initial state until the piston touches the spring.
Find the heat transferred and work done from initial state until the piston touches the spring, the heat transferred and work done while the spring is compressed.
If the final mole fractions of CO2, CO, H2O and H2 are 0.0275, 0.1725, 0.1725 and 0.6275, respectively, how much heat is needed to add to the process?