TOP MECHANICS

Here are some questions for the board exam on the topic Engineering Economy.

Instruction: Choose the BEST answer.

1. It is the quantity of production when the income equals total cost.
a. Satiation point
b. Breakeven point
c. Optimal production point
d. Point of production

2. The length of time required to recover the first cost of an investment.
a. Break-even period
b. Payback period
c. Return of investment period
d. Payout period

3. Common term for the certificate of indebtedness
a. Stock
b. Loan
c. Bond
d. Mortgage

4. It represents ordinary share in ownership of the corporation’s capital without special guarantees of return.
a. Preferred stock
b. Special stock
c. Common stock
d. Stock option

5. A type of bond where the name of the owner is recorded in the books of the corporation. Interests are periodically sent to him without claim action.
a. Coupon bond
b. Registered bond
c. Bond paper
d. Corporate bond

6. A type of business organization where two or more persons associate to en…

Here are the answers to the questions posted yesterday on the topic THERMODYNAMICS. Please feel free to comment or ask for clarifications.
1. The state of a simple substance can be defined by at least how many properties (e.g. pressure, mass, temperature, density)?
ANSWER: B. TWO

2. The ability of a heat engine to convert the supplied heat to work is referred to as…
ANSWER: A. THERMAL EFFICIENCY

3. To increase the efficiency of a Carnot cycle…
ANSWER: C. BOTH a AND b
Increasing the max temperature and decreasing the min temperature will increase the area in the T-s diagram meaning more work for the same heat input.

4. The area under the curve of the process plotted in the p-V diagram corresponds to…
ANSWER: B. WORK NON-FLOW (INTEGRAL OF pdV)

5. The value of n, in the equation PVn=C when the process is isothermal?
ANSWER: A. 1

6. The value of n, in the equation PVn=C when the process is isometric?
ANSWER: C. INFINITY

7. In the T-s diagram, the area under the process curve corresponds …

In preparation for the second phase of Mechanical Engineer Board Exam this coming October 2010 and that of the "Overseas" version of it, I have here some review questions on Thermodynamics.

Instruction: Choose the best answer among the given choices.

1. The state of a simple substance can be defined by at least how many properties (e.g. pressure, mass, temperature, density)?
a. One
b. Two
c. Three
d. Four

2. The ability of a heat engine to convert the supplied heat to work is referred to as…
a. Thermal efficiency
b. Efficiency
c. Coefficient of performance
d. Coefficient of efficiency

3. To increase the efficiency of a Carnot cycle…
a. Increase the maximum temperature
b. Decrease the minimum temperature
c. Both a and b
d. Increase both the maximum and minimum temperatures

4. The area under the curve of the process plotted in the p-V diagram corresponds to…
a. Work flow
b. Work non-flow
c. Work steady flow
d. Heat

5. The value of n, in the equation PVn=C when the process is …