Q. What do you understand by the term “horse-power”?
A. A horse-power is equivalent to raising 33,000 pounds one foot per minute.
Q. What do you understand by “lead” on an engine valve?
A. Lead on a valve is the admission of steam into the cylinder before the piston completes its stroke.
Q. What are considered the greatest improvements on the stationary engine in the past forty years?
A. The Corliss valve gear, the governor, the compound and triple expansion.
Q. What is meant by triple expansion engine?
A. A triple expansion engine has three cylinders using the same steam expansively in each one.
Q. What is the clearance of an engine as the term is applied at the present time?