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Zorluk: OrtaParaphrased Fact Recognition

In heavy industrial cooling systems, centrifugal pumps frequently employ braided mechanical packing within the stuffing box to control shaft leakage. Rather than establishing a completely watertight barrier, the packing gland must remain slightly loose to permit a continuous trickle of process liquid along the rotating shaft. This deliberate weeping acts as both a lubricant and a coolant, preventing severe frictional overheating and premature sleeve scoring. If an operator over-tightens the gland follower to eliminate all visible leakage, the resulting lack of fluid circulation rapidly chars the packing fibers and damages the pump shaft.

According to the passage, why must mechanical packing allow a slight amount of liquid to escape?

  1. A
    To establish a completely watertight barrier across the gland follower
  2. To reduce friction and keep the pump shaft from suffering heat damageCevap
  3. C
    Because severe frictional overheating is required to continuously circulate process liquid
  4. D
    To allow synthetic grease additives to penetrate into the stuffing box

Cevap

The mechanical packing must allow a slight fluid escape to reduce friction and keep the pump shaft from suffering heat damage.
The passage explicitly explains that the controlled leaking of process liquid serves as a lubricant and coolant, which prevents overheating and shaft scoring. The correct option restates these facts accurately using different phrasing ('reduce friction and keep the pump shaft from suffering heat damage').

Adım Adım Çözüm

1
Locate the portion of the passage explaining the purpose of fluid leakage.
Identified the sentence stating that 'deliberate weeping acts as both a lubricant and a coolant, preventing severe frictional overheating and premature sleeve scoring.'
Direct retrieval of the factual basis is required before matching paraphrased meanings.
2
Translate the explicit details into synonymous expressions.
'Acts as both a lubricant and a coolant' equates to reducing friction and cooling, while 'preventing severe frictional overheating' translates to protecting the shaft from heat damage.
The correct response restates the core meaning without copying verbatim phrasing.
3
Evaluate the choices and eliminate distractors based on contradictions, inversions, and unmentioned details.
The option describing friction reduction and heat protection perfectly captures the factual detail without altering the meaning.
Ensures that verbatim traps and causal distortions are rejected.

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Paraphrased Fact Recognition
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Paraphrased Fact Recognition

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