One of the Most Efficient Engines Built So Far Has

question 23

Short Answer

One of the most efficient engines built so far has the following characteristics:
combustion chamber temperature = 1900°C
exhaust temperature = 430°C
7.0 × 10⁹ cal of fuel produces 1.4 × 10¹⁰ J of work in one hour, where 1 cal = 4.19 J
(a) What is the actual efficiency of this engine?
(b) What is the Carnot efficiency of the engine?
(c) What is the power output of this engine?

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Definitions:

Internal Rate of Return Method

A capital budgeting technique used to evaluate and compare the profitability of investments, calculating the interest rate at which the net present value of costs equals the net present value of benefits.

Capital Rationing

The process of selecting the most profitable projects to invest in when a company has a limited amount of capital.

Capital Outlay

Expenditures for acquiring fixed assets or adding to the value of an existing fixed asset with a useful life extending beyond the taxable year.

Cash Inflows

The total amount of money coming into a company from its operational, investing, and financial activities over a period.