Page 1108 - Basic Electrical Engineering
P. 1108
a. NAND gate
b. OR gate
c. NOR gate
d. XOR gate.
5. Which of the following gates is represented by the Boolean expression: A + B + C + D = Y
a. 4-input AND gate
b. 4-input OR gate
c. 4-input NAND gate
d. 4-input NOR gate.
6. Which of the following is the Boolean expression for a 3-input NAND gate?
a.
b.
c.
d. A.B.C=Y.
7. Which flip-flop has only one data input?
a. RS flip-flop
b. D flip-flop
c. JK flip-flop
d. Triggeringflip-flop.
8. Which of the following can be called an universal flip flop?
a. JK flip-flop
b. D flip-flop
c. RS flip-flop
d. Clocked RSflip-flop.
9. In a JK flip-flop, repeated clock pulses causes the output to turn on-off-on-off—when
a. both inputs J and K are at 0
b. J is at 0 and K is at 1
c. K is at 0 and J at 1
d. both inputs J and K are at 1.
10. The master–slave JK flip-flop is an example of
a. level-triggered device
b. positive edge-triggered device
