MDE 19 Q1

Answer: C) Uneven engagement leading to vibration and potential clutch slippage

Explanation:
Distorted friction pads in pneumatically operated friction clutches can cause uneven engagement, which results in vibrations and potential clutch slippage. This can negatively impact the clutch's performance and cause irregular operation.

Answer: B) Decreased engagement force causing incomplete clutch engagement or slippage

Explanation:
Reduced air pressure in pneumatically operated friction clutches results in decreased engagement force, which can lead to incomplete engagement or slipping of the clutch. This impairs the clutch’s ability to effectively transmit power, leading to reduced performance and potential operational issues.

Answer: B) Increased risk of friction pad wear and potential clutch slippage

Explanation:
Angular misalignment in pneumatically operated friction clutches can lead to increased wear on the friction pads and potential clutch slippage. Misalignment causes uneven force distribution, which can affect the clutch's performance and lead to mechanical issues over time.

Answer: B) Decreased friction causing slippage and reduced clutch efficiency

Explanation:
Oil contamination on friction pads reduces the coefficient of friction between the clutch surfaces, leading to slippage and decreased clutch efficiency. This results in poor power transmission and potential damage to the clutch system.