Practical Examination Quiz (Digital Electronic Lab) Set2

Max Mks: 10 Time: 10 mins

Univ. Roll No (in fig.) :Univ. Roll No (in words.) :Subject: Date of Examination:Code: Day:Signature of Student:Marks Obtained: Grade Obtained:

Signature of Internal Examiner Signature of External Examiner

Q1.gray code for 6 is

a.1100 b.1001 c.0101 d.0110

Q2.Given BCD number 10010011 ,its decimal equivalent is

a.147 b.143 c.93 d.39

Q3.in binary no 110.101 fractional part has value

a.0.125 b.0.625 c.0.875 d.0.5

Q4.Boolean expression is given by

a.AC b.BC c.C d.none

Q5.Number 149 in octal code will be

a.154 b.178 c.254 d.225

Q6.How many FF are required to build a binary counter circuit from 0 to 1023

a.1 b.6 c.10 d.24

Q7.A digital multiplexer is a combinational logic circuit to perform the operation

a.AND-AND b.OR-OR c.AND-OR d.OR-AND

Q8. A mod 2 counter followed by a mod 5 counter is

a.same as mod 5 counter followed by mod 2 counter b.decade counter c.mod 7 counter

Q9.a divide by 78 counter can be realized by using a.6 nos of mod-13 counter b.one mod 13 counter followed by one mod 6 counter c.13 nos of mod 6 counter

Q10.In sequential circuit O/P at any instant of time depends on a.only on present input b.past output as wll as present input c.on past input d.on present output