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# AE-JE Foundation EE : Digital Electronics Revision Quiz

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Question 1

Which of the following is a universal logic gate?

Question 2

If x and y are Boolean variables, then the equivalent the function F(x, y) = x ⨁ y ⨁ xy is equal to

Question 3

Consider the expression given below (–64)

_{10}+ (64)_{8}= (×)_{10}The value of 'X' is equal to

Question 4

Which of the following logic gates can be used to implement the functionality of any logic gate?

Question 5

For the given ring oscillator the propagation delay of each inverter is 2msec. What is the fundamental frequency of the output?

Question 6

Obtain the Minimized SOP form of function f (A,B,C,D) where f is given as Σm(0,3,4,5,7,9,11,14,15).

Question 7

Which of the following logic gates provides output as 1 when both inputs are different?

Question 8

The reduced state table of a sequential machine has 7 rows. What is the minimum number of flip flops needed to implement the machine?

Question 9

A register capable of incrementing and/or decrementing its contents is called ?

Question 10

In a J-K flip-flop, if then it acts as a/an:

Question 11

Identify the combinational logic circuit(s) from the following list:

I. Full adder

II. J-K flip-flop

III. Counter

Question 12

For a certain 6 bit successive approximation type ADC, it the conversion time for on input of 1.5V is 75 µ sec. then the conversion time for an input of 2V will be________ µ sec.

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AE & JE ExamsSep 13AE & JE Exams

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