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14. Semicondutor electronics — Physics STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 SciencePhysics14. Semicondutor electronics1 Mark
MCQ
For the following logic circuit, the truth table is:
  • A
    $A$ $B$ $Y$
    $0$ $0$ $0$
    $0$ $1$ $0$
    $1$ $0$ $0$
    $1$ $1$ $1$
  • B
    $A$ $B$ $Y$
    $0$ $0$ $1$
    $0$ $1$ $1$
    $1$ $0$ $1$
    $1$ $1$ $0$
  • ✓
    $A$ $B$ $Y$
    $0$ $0$ $0$
    $0$ $1$ $1$
    $1$ $0$ $1$
    $1$ $1$ $1$
  • D
    $A$ $B$ $Y$
    $0$ $0$ $1$
    $0$ $1$ $0$
    $1$ $0$ $1$
    $1$ $1$ $0$
✓

Answer

Correct option: C.
$A$ $B$ $Y$
$0$ $0$ $0$
$0$ $1$ $1$
$1$ $0$ $1$
$1$ $1$ $1$
c
 $Y=\overline{\bar{A} \cdot \bar{B}}=A+B$

It is $OR$ gate.

$A$ $B$ $Y$
$0$ $0$ $0$
$0$ $1$ $1$
$1$ $0$ $1$
$1$ $1$ $1$

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