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Question 30Asked in DSSSB TGT Computer Science (Technical), 12 Sep 2025, Shift 3 (5:00 PM)

If a, b are the inputs and y is the output of a two input AND logic gate, then which of the

If a, b are the inputs and y is the output of a two input AND logic gate, then which of the following is the correct expression for the output of the AND logic gate?
  1. Ay = a'.b'
  2. By = a.b'
  3. Cy = a'.b
  4. Dy = a.b
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Correct answer: (D) y = a.b

Explanation

An AND gate gives 1 only when both inputs are 1, so y = a·b. The options with complemented inputs describe other functions.

From DSSSB TGT Computer Science PYQ (Technical), 12 Sep 2025, Shift 3 (5:00 PM)

This is question 30 of DSSSB TGT Computer Science PYQ (Technical), 12 Sep 2025, Shift 3 (5:00 PM). See all questions of this paper with answers, or attempt the paper as a timed online test to get your score and all-India rank.