Question 278Motor Plants - Assistant Engineer
70% to passThe unit shown in the illustration is beginning the sludge discharge cycle. The operating liquid solenoid valve has been energized and space "J" is filling up. Which of the following actions should occur next? Illustration MO-0112
AThe liquid enters the opening space, controlled by the discharge port "S", thereby causing the sliding bowl bottom to move upwards.
BThe liquid enters via port "X" into the opening space with the net resultant force causing the piston slide to move down.
CThe liquid enters via port "X", travels through the closing chamber, and exits port "S", maintaining an upward force against the bowl bottom.
DThe liquid remains trapped in space "J", developing an upward force to open the bowl.
AI Explanation
The correct answer is B. When the liquid solenoid valve is energized, the liquid enters via port "X" into the opening space. This creates a net resultant force that causes the piston slide to move down, initiating the sludge discharge cycle. Option A is incorrect because the sliding bowl bottom does not move upwards during this stage of the cycle. Option C is incorrect because the liquid does not exit through port "S" at this point. Option D is incorrect because the liquid is not trapped in space "J"; instead, it is being used to create the downward force on the piston slide.
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