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A two-cylinder 250 cm^3 displacement motorcycle engine that operates on an ideal Otto cycle at 4500 RPM. The compression ratio is 9. Air enters the engine at 100 kPA, 27 degree C and peak temperature is 2250 degree K. Determine:
a. the net work percylinder
b. the cycle thermal efficiency
c. the net power output
d. what is the cycle efficiency if a cold-air-standard analysis is used with the following values: R = 8.314 kJ/kmol-K, cp = 1007 j/kg-K, cv = 0.720 kj/kg-K?
A 12 kN force is exerted on a rocker arm. The moment of inertia (I) of the crosssection with respect to the neutral-axis is 43.3x10-9 m4.
Determine the smallest gauge of copper wire which must be used if the indicated maximum temperature is to be less than 202°C - Explain what is meant by 'the law of intermediate metals' relating to temperature measurement using thermocouples.
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