Volute type of casing is provided in a centrifugal pump to

Answer: Option A

In a centrifugal pump, a volute type of casing is designed to gradually increase the area of the flow path as the fluid moves away from the impeller. This design helps in converting the velocity head to pressure head. As the fluid decelerates in the volute casing, its kinetic energy (velocity head) is converted into potential energy (pressure head). This process is crucial for increasing the pressure of the fluid being pumped, allowing for more efficient fluid transfer in various applications.