Underwriters Laboratory Check Televisions For Safety

The video tutorial explains the rigorous testing process a television set undergoes to ensure safety and functionality. It includes impact testing, stress testing under various conditions, and safety checks. The set must function safely even with disconnected or worn-out parts. If any issues like secondary arcing occur, the set will not receive approval from Underwriters Laboratories.

What is the purpose of the impact test on a television set?

• To test the remote control

• To ensure the set's durability

• To measure the sound output

• To check the picture quality

Under what conditions must the television set function safely?

• Only when connected to a power source

• Under both normal and abnormal conditions

• Only during the warranty period

• Only when new

What happens if parts of the television set are disconnected?

• The set will increase its volume

• The set will display an error message

• The set will automatically shut down

• The set should still function safely

What is placed over the high voltage cage during testing?

• A plastic cover

• A rubber mat

• Cheesecloth

• A metal sheet

What is the consequence if secondary arcing ignites the cheesecloth?

• The set will be repaired

• The set will be sold at a discount

• The set will be approved

• The set will be rejected