Question

What happens if cross section area of nozzle of cylinder of water pump is reduced? Assume same force is applied on the piston.

• A. Water enters the pump with higher speed
• B. Water leaves the pump with higher speed
• C. More amount of water enters or leaves in same time
• D. A and B

Answer 1

The correct option is D A and B

Difference in pressure is between atmospheric pressure and pressure inside the cylinder. Hence, same amount of water leaves in same time.

Pressure=Force/Area

Since Area of nozzle is reduced, Pressure at nozzle increases increasing the speed at which water leaves or enter the water pump.