Question: Which of the following elements describes two or more normally closed switches in series?

Answer: NOR

Question: Which of the following logic elements describes two or more normally closed switches in parallel?

Answer: NAND

Question: Which type of logic elements uses a relay?

Answer: Memory

Question: Which of the following logic elements describes a circuit with two normally open switches in series?

Answer: AND

Question: Which of the following shows the connections for power device?

Answer: Power diagram

Question: Which device provides the means by which electrical circuits control pneumatic or hydraulic systems?

Answer: Solenoid-operates directional control valve

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

Answer: Valve

Question: It is standard practice in industry to carry the flow of electricity to a solenoid through ______.

Answer: Relay contacts

Question: A stop pushbutton is basically just a ______.

Answer: Normally closed pushbutton switch

Question: Which of the following is not a component of a limit switch?

Answer: It is a switch used to sense the position of a machine member.

It is a simple, low in cost, reliable device.

It is the most frequently-used input device on automatic machines.