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A steam engine 18"× 24" runs at 250 rpm. The diameter of piston rod is 3.5 inch. The indicator card is 3.5 inch long and the area of the head end is 1.96 square inch. Area of the crank end card is 1.86 square inch. Spring skill is 800 lb in the test, a prony brake with 10 ft lever arm registered and average load on the scale of 100 psi/inch. What is the mechanical efficiency of the engine in percent?

A steam engine 18"× 24" runs at 250 rpm. The diameter of piston rod is 3.5 inch. The indicator card is 3.5 inch long and the area of the head end is 1.96 square inch. Area of the crank end card is 1.86 square inch. Spring skill is 800 lb in the test, a prony brake with 10 ft lever arm registered and average load on the scale of 100 psi/inch. What is the mechanical efficiency of the engine in percent?

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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A steam engine 18"× 24" runs at 250 rpm. The diameter of piston rod is 3.5 inch. The indicator card is 3.5 inch long and the area of the head end is 1.96 square inch. Area of the crank end card is 1.86 square inch. Spring skill is 800 lb in the test, a prony brake with 10 ft lever arm registered and average load on the scale of 100 psi/inch. What is the mechanical efficiency of the engine in percent?
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