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For an Fe-C system with 0.35 wt.% of C, identify the following.
1. Amount of Proeutectoid and Eutectoid phases.
2.Amount of total ferrite and cementite
A sand and gravel pit purchased for $900,000 is expected to yield 50,000 tons of gravel and 80,000 tons of sand per year. The gravel will sell for $6 per ton and the sand for $9 per ton. (a) Determine the depletion charge according to the percentage depletion method. The percentage depletion rate for sand and gravel is 5%. (b) If taxable income is $100,000 for the year, is this depletion charge allowed? If not, how much is allowed?
A company just purchased an intelligent robot, which has a first cost of $80,000. Since the robot is unique in its capabilities, the company expects to be able to sell it in 4 years for $95,000. (a) If the company spends $10,000 per year in maintenance and operation of the robot, what will the company’s MACRS depreciation charge be in year 2? Assume the recovery period for robots is 5 years and the company’s MARR is 16% per year when the inflation rate is 9% per year. (b) Determine the book value of the robot at the end of year 2.
A 1 M solution of Cu(NO3)2 is placed in a beaker with a strip of Cu metal. A 1 M solution of SnSO4 is placed in
a second beaker with a strip of Sn metal. A salt bridge connects the two beakers, and wires to a voltmeter link the
two metal electrodes.
(a) Which electrode serves as the anode and which as the cathode?
(b) Which electrode gains mass and which loses mass as the cell reaction proceeds?
(c) Write the equation for the overall cell reaction.
(d) What is the emf generated by the cell under standard conditions?
A 500mm diameter pipeline discharges water from a large reservoir. Determine the maximum possible elevation of its summit at B for a discharge of 2. 15m3/s without the absolute pressure becoming less than 20 KN/m2. Take atmospheric pressure as 10^6
Answer the question below. (Opinion)
1. When will there be a drawback in using a Virtual Memory?
2. Why drawback happens in using virtual memory?
Archaeologists used pieces of burned wood, or charcoal, found at the site to date
prehistoric paintings and drawings on walls and ceilings of a cave in Lascaux, France. See Figure 3.1.8. Use the information on page 84 to determine the approximate age of
a piece of burned wood, if it was found that 85.5% of the C-14 found in living trees of
the same type had decayed.
How many characters per second can be transmitted over a 1200-baud line in each of the following modes? (Assume a character code of eight bits.)
a. Synchronous serial transmission.
b. Asynchronous serial transmission with two stop bits.
c. Asynchronous serial transmission with one stop bit
What is Direct Memory Access? Explain the working of DMA. What are the different kinds of DMA transfers?
Convert the following arithmetic expressions from infix to reverse Polish notation.
a. A * B + C * D + E * F
b. A * B + A * (B * D + C * E)
c. A + B * [C *D + E *(F + G)]
d. (A + B) * [C * (D + E) + F]
