A centrifugal pump has the following specifications: Power = 4 H.P.; Speed = 800 rpm Head = 8 metres Flow = 1000 litres/minutes. If its speed is halved, then the new head will be ______________ metres?

A. Amount of energy stored
B. Flow rate through accumulator
C. Rate of falling of ram
D. Volume available in the cylinder

A. Water at room temperature
B. Air at room temperature
C. Oxygen at room temperature
D. Nitrogen at room temperature

A. U-tube manometer
B. Inclined tube manometer
C. Pitot tube
D. None of these

A. Fluid friction is zero
B. Gravity force is less than the fluid friction
C. Pressure forces equal gravity forces
D. Sum of the fluid friction and pressure forces is equal and opposite to gravity forces

A. Velocity is constant along a stream line
B. Energy is constant throughout the fluid
C. Energy is constant along a stream line, but may vary across stream lines
D. None of these

A. 0.44
B. 0.044
C. 4.4
D. 44