GATE ECE 2015 Set 3 | Question: 15

Question

In the circuit shown, diodes $D_{1}, D_{2}$ and $D_{3}$ are ideal, and the inputs $E_{1} , E_{2}$ and $E_{3}$ are $“0\: V”$ for logic $‘0’$ and $“10\: V”$ for logic $‘1’$. What logic gate does the circuit represent?

• A. $3$-input OR gate
• B. $3$-input NOR gate 
• C. $3$-input AND gate 
• D. $3$-input XOR gate