As shown in figure "A" of the illustration,...

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Question 1 of 205eccefa5bacbc34ba4d486e6

As shown in figure "A" of the illustration, what causes the Boolean output at "Q" to be set to 1? See illustration EL-0259.

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Question 1 of 20

5eccefa5bacbc34ba4d486e6

As shown in figure "A" of the illustration, what causes the Boolean output at "Q" to be set to 1? See illustration EL-0259.

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🔍 Key Concepts

• Figure A is labeled TON (On-Delay Timer) using standard IEC timer symbols • Understand the roles of IN (Boolean input), Q (Boolean output), PT (preset time), and ET (elapsed time) for an on-delay timer • Think about what happens to ET and Q when the input signal goes from 0→1 and from 1→0

💭 Think About

• When IN first changes state, does an on-delay timer turn Q on immediately, or only after some time has passed? • For a TON timer, does time "count up" from zero or "count down" from the preset value? How does that relate to ET and PT? • What must be true about the relationship between ET and PT before the output Q can become 1?

✅ Before You Answer

• Verify which options describe IN going to 1 versus IN going to 0 – an on-delay is triggered by energizing the input • Check which options correctly state that time increments from zero toward PT, not the other way around, for ET on a TON timer • Eliminate any option that ties Q turning on to IN going to 0 or to time decrementing from PT, since that behavior matches a different timer type (e.g., TOF)

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Question 1 of 205eccefa5bacbc34ba4d486e6

As shown in figure "A" of the illustration, what causes the Boolean output at "Q" to be set to 1? See illustration EL-0259.

Back

Question 1 of 20

5eccefa5bacbc34ba4d486e6

As shown in figure "A" of the illustration, what causes the Boolean output at "Q" to be set to 1? See illustration EL-0259.

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

💭 Think About

✅ Before You Answer

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