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Use the initial- and final-value theorems to find the jump at t = 0 and the limiting value as t → ∞ for the solution of the initial-value problem
The mass flow rate through a steam turbine operating under steady conditions is 100 kg/s. Steam enters the turbine at 12 MPa and 400oC. A mixture of vapour and liquid water exits the turbine at 10 kPa. At the exit state 93% of the mass of the water i..
consider a steam power plant that operates between the pressure limits of 5 mpa and 10 kpa. steam enters the pump as
A 30-cm-long, 1-cm-diameter aluminium fin (k=237 W/m·K) is exposed to an environment at 22oC. The base temperature of the fin is maintained at 80 oC. The heat transfer coefficient between the rod and the surrounding air is 11 W/m2·K.
Ideal vapor-compression refrigeration cycle, An ideal vapor-compression refrigeration cycle, with ammonia as the working fluid, has an evaporator temperature of -20c and a condenser pressure of 12 bar
a constant velocity 20msec horizontal water jet from a stationary nozzle exit area 0.5 msec impinges normally on a
the earth spins about its own axis at an angular velocity omega. imagine an experiment where an object of mass m kg is
A pressurized steel tank is constructed with a helical weld that makes an angle α = 55° with the longitudinal axis (see figure). The tank has radius r = 0.6 m, wall thickness t = 18 mm, and internal pressure p = 2.8 MPa. Also, the steel has modulu..
1. determine the solar elevation at solar noon for winer solstice equinox and summer solstice for elevations 30 40 and
a turbine produces 2 mw of power while accepting steam at 3 mpa and 400 c and rejecting steam at 50 kpa and 100c. find
A fourth-order polynomial passes through the five points for which the independent and dependent variables, x and y, respectfully, are given (-2,37), (-1,7), (0,5),(1,13), and (2,61). Find the polynomial by any suitable method. Here, x represents the..
The diameter of the steel pin at C is 0.375in and the ultimate shear strength is 54ksi. If a factor of safety of 2.0 is required in both the strut and the pin at C. determine the maximum load P that can be supported by the structure.
a new dam project will require 48000 a year in maintenance costs after it is complete. these maintenance costs will
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