A tungsten filament is operated at ___

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Question 1 of 207wfOzH7DoUbwF56L4pqQ

A tungsten filament is operated at ____ temperature than a thoriated tungsten filament:

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7wfOzH7DoUbwF56L4pqQ

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A tungsten filament is operated at ____ temperature than a thoriated tungsten filament:

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🔍 Key Concepts

• Tungsten filament characteristics in vacuum tubes or lamps • Effect of thoriation (adding thorium) on electron emission • Relationship between operating temperature and electron emission efficiency

💭 Think About

• Think about why engineers add thorium to a tungsten filament. What property are they trying to improve? • If thorium improves electron emission, does that mean you need a hotter filament, a cooler filament, or does it not matter? • How does changing the required temperature affect filament life and power consumption?

✅ Before You Answer

• Recall that thoriated tungsten has a different work function than pure tungsten • Decide whether better emission at a given temperature would allow operation at a higher, lower, or same temperature for the same current output • Eliminate any option that contradicts what you know about filament life vs. temperature (hotter filaments generally have shorter life)

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Question 1 of 207wfOzH7DoUbwF56L4pqQ

A tungsten filament is operated at ____ temperature than a thoriated tungsten filament:

Back

Question 1 of 20

7wfOzH7DoUbwF56L4pqQ

Q

A tungsten filament is operated at ____ temperature than a thoriated tungsten filament:

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

• Tungsten filament characteristics in vacuum tubes or lamps • Effect of thoriation (adding thorium) on electron emission • Relationship between operating temperature and electron emission efficiency

💭 Think About

• Think about why engineers add thorium to a tungsten filament. What property are they trying to improve? • If thorium improves electron emission, does that mean you need a hotter filament, a cooler filament, or does it not matter? • How does changing the required temperature affect filament life and power consumption?

✅ Before You Answer

• Recall that thoriated tungsten has a different work function than pure tungsten • Decide whether better emission at a given temperature would allow operation at a higher, lower, or same temperature for the same current output • Eliminate any option that contradicts what you know about filament life vs. temperature (hotter filaments generally have shorter life)

👋 Hi! I'm Genie, your AI study assistant. How can I help you with this question?

Quick actions

— No credit card needed