Oxy Acetylene Torch Fundamentals

Front

What is the correct sequence for lighting an oxy-acetylene torch? Options: Open the acetylene valve, ignite the flame, then open the oxygen valve. Open the oxygen valve, ignite the flame, then open the acetylene valve. Ignite the flame, then open both the acetylene and oxygen valves simultaneously. Open both the acetylene and oxygen valves, then ignite the flame.

Back

Open the acetylene valve, ignite the flame, then open the oxygen valve.

Front

Which of the following is a critical safety precaution when using an oxy-acetylene torch? Options: Use the torch in a confined space to concentrate the heat., Wear loose clothing to allow for better movement., Check for leaks in hoses and connections before use., Store acetylene cylinders horizontally.

Back

Check for leaks in hoses and connections before use.

Front

What is the ideal gas mixture ratio for cutting steel with an oxy-acetylene torch?

Back

1:2

Front

Which cutting method is most suitable for making straight cuts in thick steel plates? Options: Freehand cutting, Bevel cutting, Machine cutting, Gouging

Back

Machine cutting

Front

How often should the hoses of an oxy-acetylene torch be inspected for wear and damage?

Back

Daily

Front

What is the primary purpose of a flashback arrestor in an oxy-acetylene setup?

Back

To prevent the flame from traveling back into the hoses.

Front

Which of the following is NOT a recommended practice for maintaining oxy-acetylene equipment? Regularly clean the torch tip. Use oil to lubricate the regulator. Store cylinders in an upright position. Replace worn-out hoses immediately.

Back

Use oil to lubricate the regulator.

Front

What is the effect of using too much oxygen in the gas mixture when cutting metal?

Back

It increases the risk of backfire.

Front

Which of the following is a sign that the torch tip needs cleaning? The flame is too short. The flame is too blue. The flame is sputtering or popping. The flame is too quiet.

Back

The flame is sputtering or popping.

Front

What should be done if a flashback occurs while using an oxy-acetylene torch?

Back

Turn off the acetylene valve first, then the oxygen valve.