DieselShip's Online Content Library

Q7. (a) The efficiency, η, of a steam turbine is given by:

η = 4(nρ cosα -n² ρ² ) where n and α are constants.

Determine EACH of the following:

(i) the value of ρ such that η is a maximum; (8)

(ii) the maximum value of η. (2)

(b) Determine the first and second derivatives of the following function: (6)

y = 5 sin x+ 6x³ - 2x√x