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The water is at constant pressure. the process stops when the volume has doubled. How do you determine the final state and the heat transfer?
A spring-mass-damper system is subjected to a harmonic force. The amplitude is found to be 20mm at resonance and 10mm at a frequency 0.75 times the resonance frequency. Find the damping ratio in the
Air enters the compressor at 98 kPa and 295 K (State 3) and exits at 1000 kPa and 620 K (State 4) at the rate of 10 kg/s. Calculate the net power (MW) delivered to the generator by the turbine.
At the beginning of the compression in a diesel cycle, T = 300 K and P = 200 kPa; after combustion (heat addition) is complete, T = 1500 K and P = 7.0 MPa.
Consider a counter-flow heat exchanger in a refrigeration system. Calculate temperature of air at the exit of the heat exchanger.
An incompressible liquid flows through a throttling device. Does the temperature change (increase/decrease) or remain the same from inlet to exit?
How many such primary slip systems are in a position to be activated at the same time when the load is applied parallel to the rod axis?
Show all three states of steam on T-v diagram. Label states, show property values, and indicate appropriate lines of constant pressure.
Calculate mass flow rate (kg/s) of the refrigerant at the exit of the diffuser. Find area (m2) at the exit of the diffuser.
For the vapor power cycle, steam enters the at 3 MPa and 500 C and leaves at 70 kPa and 200 C. The system is operating at steady state with no changes in kinetic or potential energy and we assume no
Taking the object and liquid as a system, how much word the Temperature of the liquid rise or fall? Assume the temperature of the object doesn not change.
Determine the manometer reading, h, for the manometer attached to the static pressure tap within the test section of the wind tunnel if the air velocity within the test section is 60 m/s.
Methane, oxygen and nitrogen flow into an insulated tank. the methane flow is 2 kg/s at the 320K. The oxygen flow is 3 kg/s at 340K. The nitrogen flow is 4 kg/s at an unknown temperature.
A venture (necked-down section in a pipe) develops a low pressure that can aspire fluid upward from a reservoir. Derive as expression for velocity V1 that is just sufficient to bring the reservoir f
Nitrogen at 900 kPA and 300 degree C is expanded adiabatically in a closed system to 100 kPa. Determine the minimum nitrogen temperature after the expansion.
A mixture of gases (with an apparent molecular weight of 35 kg/kilo-mol) is flowing at 20 degrees Celsius, the manometer fluid has a SG=0.92. Estimate pressure P2 and the gas flow rate in (m^3)/h.
Find the following equivalent amounts if the interest rate is 8% compounded annually. The present value of series of prospective payments,$1200 a year for 100 years.
A vibrating system has a mass m = 10kg suspended from a spring of modulus k = 2500N/m nd damping amunts to c = 45 Ns/m. Vibration is caused by a harmonic force of F = 180 and frequency 3.5Hz.
Two steel plates (A572, Fy = 50ksi) are welded together to form an inverted T-beam. Determine the maximum bending stress developed. Also determine the maximum shear stress at the neutral axis (N.A.)
If the velocity varies linearly from one plate to the other, calculate the shear stress on each plate. Calculate the force exerted on a 2m^2 section of the plater.
Determine the fractional yield of fresh water from the process (kg H2O recovered/kg H2O in process feed) and the fraction of salt in the solution leaving the fourth evaporator. Draw a flow chart of
A metal plate of thickness L and surface area A is initially at a uniform temperature T1. suddenly, one of its surfaces is subjected to a uniform heat flux "q", while the other surface is exposed to
Calculate the head loss in this length of pipe when the velocity is increased 5.5 m/s. Assume the kinematic viscosity of the fluid is 4.2 x 10-4 m2 /s.
What thickness of insulation, when placed on the outer surface, gives the same heat flux through the wall as a 0.0025m thickness placed on the inner wall?
A mixture of 1 mol of H2O, 2 mol of O2, and 5 mol of N2 is heated to 2200 K at a pressure of 5 atm. Assuming the equilibrium mixture consists of H2O, O2, N2, and H2, determine the equilibrium compos