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3 years ago

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Which term defines the amount of mechanical work an engine can do per unit of heat energy it uses? A. specific heat B. conductiv

ity C. thermal expansion D. efficiency

1 answer:

KengaRu [80]3 years ago

4 0

Answer:

Efficiency

Explanation:

The amount of mechanical work an engine can do per unit of heat energy it uses is called its efficiency.
It is also defined as the output divided by the total electrical power consumed.
In terms of heat, efficiency of engine is given by :

$\eta=1-\dfrac{Q_o}{Q_i}$

$Q_o\ and\ Q_i$ are output heat and input heat respectively.

Hence, the correct option is (d) "efficiency"

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3 years ago

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To solve this problem we will apply the concepts related to the calculation of the speed of sound, the calculation of the Mach number and finally the calculation of the temperature at the front stagnation point. We will calculate the speed in international units as well as the temperature. With these values we will calculate the speed of the sound and the number of Mach. Finally we will calculate the temperature at the front stagnation point.

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$T_0 = 689.87K$

Therefore the temperature at its front stagnation point is 689.87K

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3 years ago