Aux 1 Unit 5 Q3

1 / 10

Why is it important for the piston seals in a double-acting piston pump to be well-maintained?

A) To reduce the noise generated by the pump

C) To increase the pump's operating speed

B) To prevent fluid leakage between the high-pressure and low-pressure sides of the piston

D) To ensure the pump operates at higher temperatures

2 / 10

In a double-acting piston pump, how does the fluid flow during the forward stroke of the piston?

B) Fluid is expelled from the cylinder through the discharge valve

D) Fluid is pumped back into the suction line

A) Fluid is drawn into the cylinder through the suction valve

C) Fluid remains static in the cylinder

3 / 10

Why is a relief valve often installed in a system using a double-acting piston pump?

A) To increase the pump's flow rate

D) To reduce the noise generated by the pump

C) To cool the fluid being pumped

B) To protect the pump and system from excessive pressure buildup

4 / 10

What role do the check valves (suction and discharge valves) play in a double-acting piston pump?

A) They regulate the temperature of the fluid

B) They prevent the backflow of fluid, ensuring that fluid flows only in the desired direction

C) They increase the pressure of the fluid

D) They control the speed of the piston

5 / 10

What could happen if a double-acting piston pump is operated with a blocked discharge line?

B) The pump could over-pressurize, leading to potential damage or failure

D) The fluid would flow back through the suction line

C) The pump would automatically shut down

A) The pump would operate more efficiently

6 / 10

In a double-acting piston pump, what happens during the return stroke of the piston?

D) Fluid is recirculated within the pump chamber

A) Fluid is expelled through the discharge valve from the opposite side of the piston

B) The pump stops moving fluid

C) The piston draws fluid into both sides of the cylinder

7 / 10

What is the defining characteristic of a double-acting piston-type positive displacement pump?

A) It pumps fluid only during the forward stroke of the piston

C) It pumps fluid using a rotating impeller

B) It pumps fluid during both the forward and return strokes of the piston

D) It operates without any moving parts

8 / 10

What is the advantage of using a double-acting piston pump over a single-acting piston pump?

C) It requires less maintenance

A) It is easier to manufacture

D) It operates at higher temperatures

9 / 10

In a double-acting piston pump, how does the cylinder design contribute to the pump's performance?

D) The cylinder design minimizes the pump's weight

C) The cylinder design ensures that fluid is pumped on both strokes of the piston

A) The cylinder design allows for varying fluid volumes

B) The cylinder is designed to maintain high temperatures

10 / 10

How does the operation of a double-acting piston pump ensure continuous fluid flow?

C) By having the piston pump fluid on both strokes, eliminating idle periods

B) By alternating the operation of two separate pumps

A) By using multiple pistons that operate sequentially

D) By increasing the speed of the piston during operation

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