1 pointWhich of the following is a property of a Relay. a. Mechanical switch b. Electrochemical switch c. None of these d. All of these

Which of the following is NOT an important part of a circuit?

the three basic components of a timer relay are timing mechanism, contacts, and ?

Which of the following does not contain electromagnets?*1 pointElectric bellRelayCircuit breakersElectric heater

Name each of the circuit symbols shown below. (3 marks)

Which of the following is not a characteristic of metals?Group of answer choicesshinymalleablebrittleconducts electricty