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Today’s automation industry quiz question comes from ISA’s new course, PLC Fundamentals for the Technical Professional. The next class starts Nov. 9. This course focuses on the role the programmable logic controller plays in the design of a control system and how proper selection, installation and maintenance can reduce operating costs and improve performance. It provides the technical expertise necessary to install, perform routine programming and maintenance and apply proper troubleshooting and configuration techniques.

Discount Alert: ISA is offering a one-time only special for the PLC Fundamentals course at 40% off regular pricing. This special is for the pilot course offering only.


The “AND” gate is equivalent to which electronic circuit?

a) series – parallel
b) parallel – series
c) series
d) parallel
e) none of the above


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Here’s the answer to today’s quiz from the instructor for ISA’s November course offering, PLC Fundamentals for the Technical Professional.

The “AND” gate, as it relates to the series electrical or electronic circuit, requires all conditions to provide electrical or logical continuity in order to control its intended output condition.

The correct answer is C.


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