GATE CSE Digital Logic – Full Comprehensive Mixed Mock Test-1 ⋆ CSE Study247

GATE CSE Digital Logic – Full Comprehensive Mixed Mock Test-1

Questions 36-40 of 100

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Question 36

MCQ · Single Correct 1 mark

A Boolean function F(A,B) = A'B + AB' represents which gate?

A NOR B XNOR C NAND D XOR

Question 37

MSQ · Multiple Correct 1 mark

Which statements about implementing a 2-input OR gate using 2-input NOR gates are CORRECT?

A The second NOR gate can be used as an inverter by tying its inputs together. B Three NOR gates are the minimum required. C Two 2-input NOR gates are sufficient. D The first NOR gate produces (A+B)'.

Question 38

MCQ · Single Correct 1 mark

A function F(A,B,C) is self-dual if F(A,B,C) = F'(A',B',C'). How many 3-variable self-dual functions exist?

A 64 B 8 C 16 D 256

Question 39

NAT · Numerical Answer 1 mark

A 16-bit Ripple Carry Adder is constructed using 16 Full Adders. Each Full Adder has a carry-in to carry-out propagation delay of 12 ns and a sum delay of 15 ns. What is the total worst-case delay (in ns) of the 16-bit adder?

Enter your numerical answer

Question 40

MCQ · Single Correct 1 mark

In a 4-bit Carry Lookahead Adder (CLA), the carry generate $G_{i}$ and carry propagate $P_{i}$ for stage i are defined as:

A $G_{i} = A_{i} . B_{i}, P_{i} = A_{i} + B_{i}$ B $G_{i} = A_{i} ^ B_{i}, P_{i} = A_{i} . B_{i}$ C $G_{i} = A_{i} . B_{i}, P_{i} = A_{i} ^ B_{i}$ D $G_{i} = A_{i} + B_{i}, P_{i} = A_{i} . B_{i}$