Q.1. The binary number 1101 is equal to the decimal number 

 a) 13

 b) 49

 c) 11 

 d) 3

 Q.2. The decimal 17 is equal to the binary number 

 a) 10010

 b) 11000 

 c)10001 

 d) 01001

 Q.3. The 1’s complement of 10111001 is 

 a) 01000111 

 b) 01000110

 c) 11000110 

 d) 10101010 

Q.4. The 2’s complement of 11001000 is

 a) 00110111 

 b) 00110001

 c) 01001000

 d) 00111000

Q.5. The output of gate is LOW when at least one of its inputs is HIGH. It is true for 

 a) AND

 b) NAND 

 c) OR 

 d) NOR 

Q.6. The output of gate is HIGH when at least one of its inputs is LOW. It is true for 

 a) AND

 b) OR

 c) NAND

 d) NOR

 Q.7. Which one of the following is not a valid rule of Boolean algebra?

 a) A + 1 = 1

 b) A = Ā

 c) A.A = A 

 d) A + 0 = A 

Q.8. The NAND gate can perform the invert function if the inputs are

 a) Connected together

 b) Left open 

 c) Either (a) or (b) 

 d) None of these 

Q.9. If a three-input AND gate has eight input possibilities, how many of those possibilities will result in a HIGH output? 

 a) 1

 b) 2 

 c) 7

 d) 8

 Q.10. In which function is each term known as minterm

 a) SOP

 b) POS

 c) Hybrid 

 d) both SOP and POS

Q.11. For a certain two-input logic gate, the output is ‘1’ for like inputs and‘0’ for unlike inputs. The logic gate is

 a) Ex-OR

 b) NAND

 c) NOR

 d) Ex-NOR 

Q.12. A NAND gate is called a universal logic element because 

 a) All digital computers use NAND gates

 b) All the minimization techniques are applicable for optimum NAND gate realization 

 c) Everybody use this gate 

 d) Any logic function can be realized by NAND gates alone

Q.13. Complement of complement of A’. B + A . B’

 a) A.B + A’.B’

 b) (A’+B) . (A+B’) 

 c) A’.B + A.B’

 d) None of these 

                                 

Answer

 1) A    2) C    3) B  4) D   5) D   6) C  7) B  8) A  9) A  10) A  11) D   12) D  13) C