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ECE · Q165

Digital Electronics

Engineering and GATE · ECE · question 165

Q165

Which one of the following statements is correct?

A.
In serial adder, if d and D, respectively, are the full adder and flip-flop delay, then the time required to perform n bit addition is [n(d + D)]
B.
Maximum delay in n bit parallel adder is 'nd', where d is delay of full adder
Answer
C.
If d is the delay of two-level circuit, then the total delay of a carry look ahead adder is only 3d
D.
Delay of D flip flop is always less than T flip-flop

Answer: Option B

Solution

Answer: Option B
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