How is the clutch shown in the attached...

🔍 Key Concepts

• Identify how an overrunning / self‑shifting clutch works in a turbine or reduction gear system. • Compare the roles of the input assembly and output assembly shown in the illustration, and notice the engaged/disengaged switch mechanism and relay assembly. • Consider whether any external power source (air, hydraulics, manual lever) is shown as necessary for engagement.

💭 Think About

• From the labels in the illustration, ask yourself: does this clutch appear to require a separate pneumatic or hydraulic line, or does it seem to respond to shaft motion and internal mechanisms? • Think about which shaft (input vs. output) must change speed or begin rotating first to cause the internal elements to move into engagement. • Look at the function of an overrunning clutch: does it typically engage when the driving member overtakes the driven member, or only when the driven member starts turning?

✅ Before You Answer

• Verify which choice describes engagement based on a speed relationship between input and output shafts, not on an outside power source. • Confirm whether the picture shows any pneumatic cylinder, air line, or manual lever that would be required for options A or D. • Make sure the option you choose matches a clutch that engages automatically through internal mechanisms when the proper speed difference exists between the shafts.

How is the clutch shown in the attached illustration engaged? Illustration GT-0018

Clutch is engaged manually prior to start up.

Clutch engages automatically when input shaft flange is rotating faster than the output assembly.

Clutch engages automatically once the output assembly begins rotating.

Pneumatic pressure from the compressor engages the clutch.

🔍 Key Concepts

💭 Think About

✅ Before You Answer