What is a ballast?
Q: What is a ballast?
A: A Ballast is a device used to regulate the amount of electrical current in a circuit.
Q: Where are ballasts commonly used?
A: Most ballasts are used in fluorescent lamps to regulate the current going through them, which could otherwise be too high and damage or burn out the lamp.
Q: Why is it important to regulate the current in a circuit?
A: It is important to regulate the current in a circuit to prevent damage or malfunction of any electrical devices or components.
Q: How does a ballast regulate the current in a circuit?
A: A ballast regulates the current in a circuit by acting as a large resistor that reduces the flow of electric current.
Q: What is ballast made of in the context of railway tracks?
A: In the context of railway tracks, ballast is crushed stone used as a foundation for the tracks.
Q: What is a ballast tamper?
A: A ballast tamper is a machine used to pack and level the crushed stone ballast beneath railway tracks.
Q: What could happen if the current in a circuit is not regulated?
A: If the current in a circuit is not regulated, it could rise to a dangerous level and cause damage or even create a fire hazard.
