Electrical Mechanical Relays Quiz

How can relays be compared to amplifiers?

• They both require a large input to produce a small output.

• They both operate without any input.

• They both increase current.

• They both can produce multiple outputs from a single input.

What is a key feature of machine control relays?

• They only operate in high voltage environments.

• They can switch between normally open and normally closed states.

• They are used exclusively in household appliances.

• They are always normally open.

What triggers a reed relay to operate?

• A change in temperature.

• A magnetic field.

• A light signal.

• A change in pressure.

What is arcing in the context of electrical relays?

• The creation of a magnetic field.

• The increase of voltage in a circuit.

• The discharge of electric current across a gap.

• The conversion of AC to DC.

How can you test if a relay is functioning correctly?

• By checking the relay's color.

• By manually operating the relay and using a DMM.

• By listening for a clicking sound.

• By measuring the relay's temperature.