Question 1 of 270705eccefa1bacbc34ba4d475d9

When the rotating shaft frequency and the natural vibrating frequency become synchronized at a particular speed, that speed is known as the __________.

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Question 1 of 27070
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Q

When the rotating shaft frequency and the natural vibrating frequency become synchronized at a particular speed, that speed is known as the __________.

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🔍 Key Concepts

• Shaft vibration and resonance in rotating machinery • Relationship between forcing frequency (shaft speed) and natural frequency of the system • Basic idea of resonance and what engineers try to avoid in propulsion shafts

💭 Think About

• Think about what engineers call the speed that causes maximum vibration when a rotating system’s operating speed matches its natural vibration frequency. • Ask yourself: which term is commonly used in machinery design as the speed range you try to pass through quickly or avoid altogether? • Consider which choice is associated with potentially dangerous levels of stress and vibration in shafts and turbines.

✅ Before You Answer

• Verify which term is used in marine engineering texts to describe the speed at which resonance occurs in a shafting system. • Check which option is the standard engineering term for the speed that corresponds to the natural frequency of the system. • Confirm that the term you choose is the one designers use when setting operating speed ranges to avoid excessive vibration.