Aux 1 Unit 5 Q4

Correct Answer: B) It provides the outer structure that contains the rotor and vanes

Explanation: The casing in a vane-type pump provides the outer structure that contains the rotor, vanes, and other internal components. It ensures that the fluid is contained and directed appropriately within the pump.

Correct Answer: B) Springs or centrifugal force

Explanation: The vanes are kept in contact with the casing by either springs (in some designs) or centrifugal force generated by the rotation of the rotor. This contact is necessary to maintain a seal and effectively move the fluid through the pump.

Correct Answer: B) To rotate and drive the vanes within the pump

Explanation: The rotor is a central component that rotates within the pump, driving the vanes in and out of the rotor slots as it turns. This rotation is essential for the pumping action that moves fluid through the pump.

Correct Answer: B) Pumping gasoline or other low-viscosity liquids

Explanation: Vane-type pumps are commonly used for pumping low-viscosity liquids such as gasoline, oil, and other similar fluids because they provide a smooth and consistent flow with minimal pulsation.

Correct Answer: B) To allow fluid to enter the pumping chamber

Explanation: The inlet port is where fluid enters the pump. As the rotor turns and the vanes extend, the fluid is drawn into the pumping chamber through this port.

Correct Answer: B) The vanes provide a smooth, continuous flow with minimal leakage or slippage

Explanation: The design of the vanes ensures that they stay in contact with the casing, creating a tight seal that minimizes leakage and slippage, making the pump efficient at handling low-viscosity fluids.

Correct Answer: B) The pump would fail to move fluid effectively, leading to reduced flow or no flow at all

Explanation: If the vanes do not maintain contact with the casing, the seal between the vanes and the casing would be lost, leading to a failure in moving the fluid effectively. This would result in reduced flow or even complete loss of pumping capability.

Correct Answer: B) By creating a vacuum as the rotor and vanes rotate, increasing the volume in the pumping chamber

Explanation: As the rotor rotates, the vanes move outward, increasing the volume in the pumping chamber and creating a vacuum that draws fluid into the pump through the inlet port.

Correct Answer: B) To discharge the pressurized fluid from the pump

Explanation: The outlet port is where the pressurized fluid is discharged from the pump after being moved through the pumping chamber by the vanes.

Correct Answer: B) It keeps the vanes extended and in contact with the casing to maintain a seal

Explanation: Centrifugal force, generated by the rotation of the rotor, keeps the vanes extended and in contact with the pump casing. This contact is crucial for maintaining a seal and ensuring efficient fluid movement through the pump.

Correct Answer: B) The fluid is pressurized as the volume in the pumping chamber decreases

Explanation: As the vanes rotate from the inlet to the outlet, the volume in the pumping chamber decreases, which pressurizes the fluid. This pressurized fluid is then discharged through the outlet port.

Correct Answer: B) They extend from the rotor to trap and move fluid through the pump

Explanation: The vanes extend outward from the rotor and make contact with the pump casing. As the rotor turns, the vanes trap fluid between themselves and the casing, moving the fluid from the inlet to the outlet of the pump.