Start Discovering Solved Questions and Your Course Assignments
TextBooks Included
Active Tutors
Asked Questions
Answered Questions
Calculate the overall efficiency, the heat rate [MW], and the total fuel rate [kg/s] of a combined-cycle power plant (1) if no supplemental firing is used.
Obtain the equation for the streamline passing through the point (2,5). b) At t=2s , what are the coordinates of the particle that passed through point (0,4) at t=0.
Cooling water enters the tubes at 15°C, 1bar and exits at 35°C, 1bar. Determine the mass flow rate of the cooling water, in kg/h, for steady operation.
Compute the corresponding maximum allowable internal moment M that can be applied to the beam.the moduli of elasticity for concrete and steel are 25GPa and 200GPa, respectively.
An electric moter drivers an axial fan assuming that the desired air velocity (65degree F) existing the fan is 50mph and the fan duct diameter is 11 inches.
Determine the work done during the process (a) by plotting the process on a P-V diagram and finding the area under the process curve and (b) by performing the necessary integration.
A partitioned chamber that is well insulated has ½ filled with H2O at 500 deg F and 50 psia and the other ½ a vacuum.
Heat transfer occurs until the volume on the inside of the cylinder is 0.00438 m3. What is the work and heat transfer for this process? Show the process on at T-v diagram.
Obtain an algebraic expression for the speed reached by the weapon in level flight. Determine the minimum fraction of the initial mass of the weapon that must be fuel to accomplish the desired accel
It is assumed that the wire surface temperature is constant at 400 K and is not affected by the insulation. Find the heat loss per unit length of the wire with the insulation present.
How many raindrops are in each cubic yard of air approximately ten feet above the ground in an open field at any given instant?
An airplane wing modeled as a spring-mass system with natural frequency 40 Hz is driven harmonically by the rotation of its engines at 39.9 Hz. Calculate the natural frequency and the driving frequ
Determine the amplitude and phase when a force F = 2cos3t acts on the system. The answers are 0.797 cm and 51.43 degrees.
If this same system is excited by a harmonic force of frequency 4 cps, what will be the percentage increase in the amplitude of forced vibration when the dashpot is removed?
Determine the magnitude of the average friction force exerted on the collar when the velocity of the collar at C is 2.78 m/s and the spring has an unstretched length of 0.60 m.
What is happening to the entropy of the potato when it cools? Does this violate any fundamental principles relating to entropy?
If the pressure 3 p is doubled, how will this affect the work done between states 2 and 3? Assume that the process from 2 to 3 remains isothermal, and the process from 3 to 1 is no longer isometric.
The sales director wants to "modernize the design by making all the corners "sharp" and the walls "flat". Is that a good idea? Why?
The movable wire is displaced by 1 in. by an applied force (making the rectangular frame 7 in. by 2 in.). The surface tension remains constant at 2.5 x 10-4 lbf/in. Determine the work done in stretc
Find the mass of liquid formed if the volume under the piston decreases isothermally to V final = 1.6 liters. Assume the water vapor to be an ideal gas.
If the cylinder is to be protected against excessive pressure by means of a fusible plug, at what temperature should the plug melt to limit the maximum pressure to 200 atmospheres?
Air at 100 kpa and 27°C enters an isentropic compressor at a rate of 100 L/s and leaves at 1000 kpa. Determine the exit temperature.
It is heated as it passes through the tube so that it leaves as super heated steam at 42000 kPa, 480C. The inside diameter of the tube is 3.12cm. Determine the velocity of the steam leaving.