GATE 2024 Subject Name Foundation Quiz 89

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Question 1

Consider the given circuit,
 
In this circuit, the race around

• ADoes not occur
• BOccurs when CLK = 0
• COccurs when CLK = 1 and A = B = 1
• DOccurs when CLK = 1 and A = B = 0

Question 2

The present output Q_n of an edge triggered JK flip-flop is logic 0. If J=1, then Q_{n +1}

• Acannot be determined
• Bwill be logic 0
• Cwill be logic 1
• Dwill race around

Question 3

consider the circuit below with initial state Q₀ = 1, Q₁ = Q₂ = 0. The state of the circuit is given by the value of 4Q₂ + 2Q₁ + Q₀
   
which one of the following is the correct state sequence of the circuit?

• A1,3,4,6,7,5,2
• B1,2,5,3,7,6,4
• C1,2,7,3,5,6,4
• D1,6,5,7,2,3,4

Question 4

For each of the positive edge-triggered J-K flip flop used in the following figure, the propagation delay is ΔT


Which of the following waveforms correctly represents the output at Q₁?

• A
• B
• C
• D

Question 5

Consider the circuit given below.

The duty cycle of is

• A20%
• B40%
• C30%
• D25%

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