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

Question 1 / 270705eccefa5bacbc34ba4d486e6

Question 1 of 270705eccefa5bacbc34ba4d486e6

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 27070

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

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

🔍 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)

Question 1 of 27070

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

When the input to IN goes to 0, the time decrements from the preset time at PT to zero.

When the input to IN goes to 1, the time increments from zero to the preset time at PT.

When the input to IN goes to 1, the time decrements from the preset time at ET to zero.

After the input to IN goes to 0, the time increments from zero to the preset time at ET.

Question 1 / 270705eccefa5bacbc34ba4d486e6

Question 1 of 270705eccefa5bacbc34ba4d486e6

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 27070

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

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