Horsepower FAQs:

Q: Is a horsepower equivalent to mechanical horsepower?

A: Yes.

Q: Was a horsepower computed based on bore and number of cylinders?

A: Yes, and not based on actual displacement, it gave rise to engines with 'undersquare' dimensions this tended to impose an artificially low limit on rotational speed , hampering the potential power output and efficiency of the engine.

Q: Was a horsepower roughly comparable to the horsepower of engines fed by the boiler?

A: Yes.

Q: Is a horsepower a common rating for jet engines?

A: Yes, and industrial turbines, and some marine applications.

Q: Is a horsepower abbreviated BHP?

A: Yes, and not to be confused with brake horsepower, below, which is also called BHP.

Q: Is a horsepower a non-linear rating of a motor vehicle for tax purposes?

A: Yes.

Q: Was a horsepower a better measure of engine power than nominal horsepower because it took account of steam pressure?

A: Yes.

Q: Is a horsepower equal to the thermal energy rate required to evaporate 34?

A: Yes.

Q: Was a horsepower originally measured and calculated by use of the "indicator diagram"?

A: Yes, and later by means of a Prony brake connected to the engine's output shaft.

Q: Is a horsepower a boiler's capacity to deliver steam to a steam engine and is not the same unit of power as the 550 ft-lb/s definition?

A: Yes.

Q: Is a horsepower still used to measure boiler output in industrial boiler engineering in Australia?

A: Yes, and the US, and New Zealand.