1. Following is the reset condition of a flip flop.
(A) 𝑄 = 1 & 𝑄̅ = 1
(B) 𝑄 = 0 & 𝑄̅ = 0
(C) 𝑄 = 1 & 𝑄̅ = 0
(D) 𝑄 = 0 & 𝑄̅ = 1
2. If J = 1 and K = 0, then condition of flip flop will be
(A) Reset
(B) Forbidden
(C) Toggle
(D) Set
3. A 555 timer IC has
(A) 3 pins
(B) 8 pins
(C) 6 pins
(D) 12 pins
4. A flip flop has number of stable states
(A) One
(B) Two
(C) Three
(D) Four
5. Which flip flop is called universal flip flop?
(A) RS
(B) JK
(C) D
(D) T
6. The pin number 6 of 555 timer IC is
(A) Trigger
(B) Discharge
(C) Threshold
(D) Control
7. D flip flop is also called
(A) Data flip flop
(B) All of these
(C) D type latch
(D) Delay flip flop
8. Following is the set condition of a flip flop.
(A) 𝑄 = 1 & 𝑄̅ = 0
(B) 𝑄 = 0 & 𝑄̅ = 0
(C) 𝑄 = 0 & 𝑄̅ = 1
(D) 𝑄 = 1 & 𝑄̅ = 1
9. A 555 timer IC has comparators
(A) Four
(B) Three
(C) Two
(D) Five
10. In clocked RS flip flop when all three inputs are zero, then flip flop state is
(A) Forbidden
(B) Hold
(C) Reset
(D) Set