The compressor efficiecny is the__________________?

(A) isothermal H.P/indicated H.R ()
(B) isothermal H.P./shaft H.R (X)
(C) total output/air input (X)
(D) compression work/motor input (X)
(E) none Of the above (X)

Answers: The compressor efficiecny is the isothermal H.P/indicated H.R.