Welding Knowledge Flashcard

Front

What is the purpose of a shut-off valve in plumbing?

Back

A shut-off valve is designed to stop the flow of water when needed, allowing for maintenance or repairs without shutting off the entire water supply.

Front

Why are oxygen and acetylene fittings not interchangeable?

Back

Oxygen and acetylene fittings are designed with different thread types to prevent dangerous mix-ups that could lead to explosions or fires.

Front

What shade lens is recommended for arc welding?

Back

A shade lens of 9 is recommended for arc welding to protect the eyes from harmful radiation.

Front

What is direct current (DC)?

Back

Direct current (DC) is a type of electrical current that flows in one direction only, commonly used in welding and battery-powered devices.

Front

How can you check hoses for leaks safely?

Back

Using soapy water is the proper method to check hoses for leaks, as it creates bubbles at the leak site.

Front

What is the function of a water meter?

Back

A water meter measures the amount of water used in a household or business, helping to monitor consumption and billing.

Front

What is the difference between alternating current (AC) and direct current (DC)?

Back

Alternating current (AC) changes direction periodically, while direct current (DC) flows in a single direction.

Front

What is a water filter used for?

Back

A water filter is used to remove impurities and contaminants from water, improving its quality for drinking and other uses.

Front

What does the term 'duty cycle' refer to in welding?

Back

Duty cycle refers to the percentage of time a welding machine can operate within a specific time frame without overheating.

Front

What is resistance in an electrical circuit?

Back

Resistance is the opposition to the flow of electric current, measured in ohms, and affects how much current flows in a circuit.