Steam enters a turbine at a velocity of 200 m/s. The inlet conditions of the steam are at 4000 kPA and 500°C. The diameter of the inlet pipe is 50 mm. The outlet conditions of the steam are 80 kPa and a quality of 1.0. The diameter of the outlet pipe is 250 mm. Determine the turbine power output in kJ/s assuming the kinetic energy change and potential energy change are both negligible. Calculate the change in kinetic energy to show it is indeed negligible.

Explain the main components of a battery and how electricity is produced

Toluene vapors at 1.013 bar, 150°C, are cooled under constant pressure to a final temperature of 22°C. (a) Determine the amount of heat that must be removed (5) (b) How much heat must be removed if the final state is a vapor-liquid mixture that contains 60% vapor by mass. (5) Assume that Cp for vapor phase is a function of temperature, and for liquid toluene Cp is constant (= 155.96 J/(mol K)). The boiling temperature of toluene at 1.013 bar is 110.6°C, and standard heat of vaporization for toluene 38060 J/mol.

Calculate (using equation) and estimate (using figure) the following: a. Dc in FCC Fe at 912C b. Dc in BCC Fe at 912C c. DNi in FCC Fe at 912C Compare the two values for each case (one from equation and other from figure) and comment on any difference.

What is the process of acquiring white cast Fe, Gray cast Fe, ductile cast Fe and malleable cast Fe, as well as their carefully sketch microstructures?

For 1 kg of liquid water, determine the entropy change of the universe when the water is: Initially at 0 C, is heated to 50 C by contact with a thermal reservoir at 50 C and then to 100 C with a thermal reservoir at 100 C Assume Cp = 4.2 kJ/kg-K

1. A crusher was used to crush a material and the screen analysis of the product is:

Calculate the:

1. volume-surface mean diameter
2. arithmetic mean diameter
3. mass mean diameter
4. volume mean diameter.
5. specific surface area (mm²/g) and the total particles/g of  the sample given that the density of the particles is 0.00265 g/mm³, the shape factor and the sphericity are 2 and 0.571,respectively.

2. A spray-dried detergent has the following screen analysis:

1. Present this information in an undersize cumulative plot.
2. Determine the volume-surface mean and the volume-mean diameters.

Consider the gas phase reversible reaction 2A ↔ B that occurs at atmospheric pressure.

a) If the equilibrium constant Ka = 0.1, what are the equilibrium mole fractions of A and B?

b) Assuming the reaction is elementary, write the rate law using kA and k-A as the forward and reverse rate constants, respectively. What is the equilibrium constant Kc in terms of kA and k-A? Assuming an ideal gas system, write an expression for Ka in terms of kA and k-A. If the temperature is 25oC, what is the value of KC?

c) Assuming the reaction is elementary, and that the forward reaction rate constant kA is 2.4 L/(mol·min), determine the time for the reaction to reach 80% of equilibrium in a constant volume batch reactor. Use the value for KC you obtained in part d to solve the problem.

Two major functions of the Battery Management System (BMS) are Contactors Control and Cell Protection.
a. What are the information (data) needed to perform cell protection in battery pack?

1.      Which of the following must be satisfied by the flow of any fluid, real or ideal?

I. Newton's second law of motion

II. the continuity equation

III. the requirement of a uniform velocity distribution

IV. Newton's law of viscosity

V. the principle of conservation of energy

a)      I, II, and III

b)      I, II, and IV

c)      I, II, III, and N

d)      I, II, and V

e)      I, II, N, and V

3.      Surface tension has which of the following properties?

I. It has units of force per unit length.

II. It exists whenever there is a density discontinuity.

III. It is strongly affected by pressure.

a)      I only

b)      II only

c)      III only

d)      I and II

e)      I, II, and III

1)Which fuel was more efficient (produced more calories per gram)? Explain your answer. Fuel canister: (diethylene glycol) or Tea candle: (paraffin) ?

2)Explain the difference in the efficiencies of the fuels you tested based on the chemical structures of the fuels.

3)Conduct research on both diethylene glycol and paraffin wax; for each fuel, summarize in your own words in one or two sentences how these fuels are synthesized. *******Cite the sources that you use for your research.***********

4)What are the possible sources of error in this experiment? How could the errors be reduced in future experiments?

5)Compare the amount of carbon dioxide released in one year from burning coal to power 10, 65-watt incandescent bulbs with the amount released from powering 10, 13-watt compact fluorescent light (CFL) bulbs. Assume the bulbs are on four hours per day for 365 days. You will need to determine the kilowatt hours (kWh) used. First, multiply the wattage of the bulbs by the number of light bulbs to determine the total watts used in one hour. Then multiply the result by time in hours to obtain the watt hours. Next, divide the result by 1000 to obtain kilowatt hours. On average, 2.1 pounds of carbon dioxide are released for every kWh of electricity produced.