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ISRO EC Quiz 5 : Digital Circuits

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Question 1

A 4 × 1 MUX is used to implement a 3–input Boolean function as shown in figure. The Boolean function F (A, B, C) implemented is

Question 2

In the 4 × 1 multiplexer, the output F is given by F = A ⊕ B. Find the required input ‘I₃I₂I₁I₀’.

Question 3

The output Y of the logic circuit given below is:

Question 4

A self-starting counter is one that can start

Question 5

Following pulse is applied to an SR flip flop.

If ∆t is propagation delay, which of the following relations should hold to avoid the rave condition?

Question 6

Consider the given circuit

In this circuit, the race around

Question 7

Which of the following binary number is equal to decimal number 66.3

Question 8

If (146)_x + (313)_x-2 =(246)₈, then the value of base x is:

Question 9

The minimum number of 2 to 1 multiplexers required to realize a 4 to 1 multiplexer is

Question 10

The Boolean expression

is logically equivalent to

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Jul 3ESE & GATE EC