Correct Answer - Option 1 : 2.34
Given that, Np = 1000 rpm, Dp/Dm = 4, Hp = 40 m, Hm = 10 m
As per turbine similarity law,
\(\frac{{{N_m}{D_m}}}{{\sqrt {{H_m}} }} = \frac{{{N_p}{D_p}}}{{\sqrt {{H_p}} }}\)
⇒ Nm = 2000
Specific speed will be same also,
\(\therefore \frac{{{N_m}\sqrt {{P_m}} }}{{H_m^{\frac{5}{4}}}} = \frac{{{N_p}\sqrt {{P_p}} }}{{H_p^{\frac{5}{4}}}}\)
⇒ Pm = 2.34 kW.