Relay Control Circuits

Which of the following is an application of a relay?

• Performing control logic

• Seal-in circuit

• Energizing a fluid power valve solenoid

• All of the above

An electromechanical relay includes which of these components?

• Two sets of NO contacts, and a solenoid coil

• NO contacts, NC contacts, and a solenoid coil

• Two sets of NC contacts, and a solenoid coil

• NO and NC contacts and a ferrous element

What component of a relay positions the contacts into their normal state when the solenoid is de-energized?

• Coil

• Contacts

• Armature

• Spring

Which of the following is not a component of a relay?

• Coil

• Contacts

• Valve

• Spring

Which type of device is the relay's solenoid coil in the control logic?

• Input

• Output

• Latching

• Memory

The flow of electricity to a solenoid is carried through __________ to protect other devices.

• uninsulated wires

• relay contacts

• shielded cable

• a capacitor

Turning outputs on or off through relay contacts is called __________.

• control logic

• bypass logic

• indirect actuation

• All of the above

A stop pushbutton is basically just a __________.

• normally open pushbutton switch

• normally closed pushbutton switch

• panic switch

• All of the above

An example of memory logic by a control relay is __________.

• bypass logic

• manual override

• seal-in circuit

• All of the above

One method of deenergizing a seal-in circuit is to use __________.

• a manual override

• another relay

• a solenoid

• an input with NC contacts