Question

Choose the correct formula/s: \[ \text{A. } Work = Force \times distance \] \[ \text{B. } Power\ received\ at\ the\ pump\ shaft\ is\ given\ by\ P=\rho gQH \] \[ \text{C. } Water\ Horsepower\ (WHP)=\frac{Q(lit/s)\times H(m)}{75} \] \[ \text{D. } Shaft\ Horsepower\ (SHP)=\frac{Water\ Horsepower}{Pump\ efficiency} \] \[ \text{E. } Brake\ Horsepower\ (BHP)=\frac{WHP}{Pump\ efficiency \times Drive\ efficiency} \] Choose the correct answer from the options given below:

• A. A and B only
• B. A, B and C only
• C. A, C and D only
• D. A, B, C, D and E

Hint:

Remember: \[ P=\rho gQH \] gives water power or hydraulic power, not shaft power. Shaft power is greater because pump losses must be considered: \[ SHP=\frac{WHP}{Pump\ efficiency} \]

Answer 1

The Correct Option is C