IDA-201 Unit 19 Flashcard MT

Front

What type of overload device is not affected by ambient temperature?

Back

Magnetic overload devices are not affected by ambient temperature.

Front

Is sanding the contacts a good practice to renew them?

Back

False, sanding the contacts is not considered a good practice.

Front

Does a starter typically come equipped with overload protection?

Back

True, starters are usually equipped with overload protection.

Front

Does the sun shining on a distribution panel affect the breakers in the panel?

Back

False, the sun shining on a distribution panel has no effect on the breakers.

Front

When a relay is energized, are the closed contacts classified as normally closed?

Back

False, the contacts that are closed when a relay is energized are classified as normally open.

Front

What is the function of overload protection in electrical devices?

Back

Overload protection prevents damage to electrical devices by interrupting the circuit when excessive current is detected.

Front

What are normally closed contacts in a relay?

Back

Normally closed contacts are contacts that remain closed (allowing current to flow) when the relay is not energized.

Front

What is the difference between normally open and normally closed contacts?

Back

Normally open contacts are open (not allowing current to flow) when the relay is not energized, while normally closed contacts are closed (allowing current to flow) in the same state.

Front

What factors can affect the performance of thermal overload devices?

Back

Thermal overload devices can be affected by ambient temperature, as they rely on heat to operate.

Front

What is the purpose of a relay in an electrical circuit?

Back

A relay is used to control a high-power circuit with a low-power signal, allowing for remote operation.