Electronics and Communication Engineering - Electronic Devices and Circuits

16.
Boolean expression for the output of XNOR (Equivalent) logic gate with inputs A and B is
AB + AB
AB + AB
(A + B). (A + B)
(A + B). (A + B)
Answer: Option
Explanation:

(A + B) (A + B) = A ⊕ B.


17.
An SR flip flop can be built using NOR gates or NAND gates.
True
False
Answer: Option
Explanation:


18.
In the given figure RC = RL = 1 kΩ, then V0 =
5 V
2.5 V
1 V
0 V
Answer: Option
Explanation:

Transistor is off. .


19.
A 14 pin NOT gate 1C has __________ NOT gates.
8
6
5
4
Answer: Option
Explanation:

6 Input pins, 6 output pins, 1 supply pin and 1 ground pin. Hence 6 NOT gates.


20.
F's complement of (2BFD)hex is
E 304
D 403
D 402
C 403
Answer: Option
Explanation: