Free Plant Design and Economics MCQs with Answers

803 Plant Design and Economics MCQs from Chemical Engineering, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.

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803 questions · page 33 of 41

  • A. None of these
  • B. And plant overhead cost
  • C. Plant overhead cost and administrative expenses
  • D. Fixed charges and plant overhead cost

Explanation: Factory manufacturing cost includes direct production cost, fixed charges, and plant overhead cost.

Correct answer: Fixed charges and plant overhead cost
  • A. 15
  • B. 35
  • C. 55
  • D. 75

Explanation: The conventional chemical-plant cost estimate used in this comparison places Indian plants at about 35% above comparable U.S. plants.

Correct answer: 35
  • A. Cash reserve
  • B. Turnover
  • C. Capital
  • D. Investment

Explanation: The turnover ratio is gross annual sales divided by fixed capital investment.

Correct answer: Turnover
  • A. 1 to 5
  • B. 25 to 35
  • C. 10 to 20
  • D. 35 to 45

Explanation: Utilities commonly account for roughly 10 to 20% of total product cost in ordinary chemical process plants.

Correct answer: 10 to 20
  • A. 2
  • B. 10
  • C. 30
  • D. 50

Explanation: Construction expenses are commonly estimated at about 10% of the total direct cost of a chemical plant.

Correct answer: 10
  • A. Total cost considerations (pumping cost plus fixed cost of the pipe)
  • B. Density of the fluid
  • C. Viscosity of the fluid
  • D. None of these

Explanation: The economic diameter minimizes total annual cost by balancing the pipe's fixed or installation cost against pumping cost.

Correct answer: Total cost considerations (pumping cost plus fixed cost of the pipe)
  • A. 0.1
  • B. 0.6
  • C. 0.2
  • D. 0.8

Explanation: The six-tenths rule is written as cost proportional to capacity raised to the 0.6 power.

Correct answer: 0.6
  • A. Product inventory
  • B. In-process inventory
  • C. Minimum cash reserve
  • D. Storage facilities

Explanation: Working capital includes inventories and cash needed for routine operation, such as product and in-process inventories and a minimum cash…

Correct answer: Storage facilities
  • A. 5 years
  • B. 7 years
  • C. 12 years
  • D. 10 years

Explanation: The operating payback period is Rs. 100 lakhs divided by Rs. 20 lakhs per year, or 5 years.

Correct answer: 7 years
  • A. Rate of return on investment
  • B. Cash reserve
  • C. Payout period
  • D. Discounted cash flow based on full life performance

Explanation: Cash reserve is a component of working capital, not a profitability-evaluation method.

Correct answer: Cash reserve
  • A. Thermal
  • B. Nuclear
  • C. Hydroelectric
  • D. Fast breeder reactor

Explanation: Hydroelectric plants have no fuel cost and generally require relatively low operating and maintenance expenditure after construction.

Correct answer: Hydroelectric
  • A. Contingencies
  • B. Raw material costs
  • C. Labour costs
  • D. Onsite and offsite costs

Explanation: Direct fixed capital is grouped into onsite costs for the process facilities and offsite costs for supporting facilities and utilities.

Correct answer: Onsite and offsite costs
  • A. Loss due to accident/breakdown in the machinery
  • B. Loss due to obsolescence of the equipment
  • C. Loss due to decrease in the demand of product
  • D. Repairs and maintenance cost

Explanation: Depreciation represents loss in an asset's value from causes such as obsolescence, wear, and accidental damage.

Correct answer: Repairs and maintenance cost
  • A. And economic life of a project are the same
  • B. Is the length of time over which the earnings on a project equals the investment
  • C. Is affected by the variation in earnings after the recovery of the investment
  • D. All A, B. and C

Explanation: The payback period is the time required for a project's cumulative earnings or cash inflows to recover its initial investment.

Correct answer: Is the length of time over which the earnings on a project equals the investment
  • A. Six
  • B. Three
  • C. One
  • D. Twelve

Explanation: Working capital commonly includes about one month's stock of raw materials valued at delivered cost.

Correct answer: One
  • A. 0.1 to 1
  • B. 1 to 2
  • C. 50 to 60
  • D. 10 to 20

Explanation: For most chemical plants, working capital is commonly estimated as roughly 10 to 20 percent of total capital investment.

Correct answer: 10 to 20
  • A. Annuity
  • B. Capital charge factor
  • C. Perpetuity
  • D. Future worth

Explanation: Equal payments made at equal time intervals form an annuity. A perpetuity is a special annuity that continues indefinitely, while future…

Correct answer: Annuity
  • A. Inventories
  • B. Chemical equipments
  • C. Marketable securities
  • D. None of these

Explanation: Inventories and marketable securities are current assets because they can normally be converted into cash within the operating cycle.

Correct answer: Chemical equipments
  • A. 2V
  • B. V/2
  • C. V
  • D. 3V

Explanation: A dike or bund is designed to retain the contents of the storage vessel if it leaks, so its required containment volume is taken as the…

Correct answer: V
  • A. Is copper
  • B. Melts below 300°C
  • C. Is copper phosphorous alloy
  • D. Melts below the melting points of base metals

Explanation: In brazing, the filler metal melts and flows at a temperature below the melting points of the steel base plates.

Correct answer: Melts below the melting points of base metals