Normally closed (NC) contacts are defined as:

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Prepare for the NCCER Electrical Level 2 Control Systems and Fundamental Concepts exam. Utilize flashcards and multiple choice questions with hints and explanations. Ensure success on your exam!

Multiple Choice

Normally closed (NC) contacts are defined as:

Explanation:
Normally closed contacts are closed when the coil is not energized; energizing the coil tends to open them. In this unlatch/rel latch scenario, energizing the unlatch coil releases the latch and returns the contact to its normal state, which for NC contacts is closed. So after the unlatch coil is energized, the contacts are engaged (closed). This matches the defined behavior of NC contacts: they conduct in the de-energized/rest condition and return to that closed state when the unlatch action resets the relay.

Normally closed contacts are closed when the coil is not energized; energizing the coil tends to open them. In this unlatch/rel latch scenario, energizing the unlatch coil releases the latch and returns the contact to its normal state, which for NC contacts is closed. So after the unlatch coil is energized, the contacts are engaged (closed). This matches the defined behavior of NC contacts: they conduct in the de-energized/rest condition and return to that closed state when the unlatch action resets the relay.

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