Digital Electronics and Logic Design MCQ Questions with answers and solutions Page 117

Q. In the toggle mode, a JK flip-flop has ?

(A) J= 0, K= 0
(B) J=0, K=1
(C) J=1, K= 0
(D) J=1, K=1

💬 Discuss

✅ Correct Answer: (D) J=1, K=1

Published by Kiran Rapria ⭐ 4.26K Points at 01-Jan-2025 03:40 pm in Digital Electronics and Logic Design

Q. In a JK flip-flop, J is connected to Q’ and K is connected to Q outputs. The JK flip-flop converts into a ?

(A) R-S flip-flop
(B) D flip-flop
(C) T flip-flop
(D) Clocked R-S flip flop

💬 Discuss

✅ Correct Answer: (C) T flip-flop

Published by Ritu Singhal ⭐ 4.36K Points at 07-Sep-2024 03:44 am in Digital Electronics and Logic Design

Q. The 'race-around' condition occurs when ?

(A) J = 0, K = 0
(B) J = 0, K = 1
(C) J = 1, K = 0
(D) J = 1, K = 1

💬 Discuss

✅ Correct Answer: (D) J = 1, K = 1

Published by Kiran Rapria ⭐ 4.26K Points at 01-Jan-2025 03:40 pm in Digital Electronics and Logic Design

Q. The functional difference between SR and JK flip-flops is that ?

(A) JK flip-flop has a feedback path
(B) JK flip-flop does not require any external clock
(C) JK flip-flop is faster than SR flip-flop
(D) JK flip-flop can accept both inputs

💬 Discuss

✅ Correct Answer: (D) JK flip-flop can accept both inputs

Published by Neelam Mittal ⭐ 4.57K Points at 31-Dec-2024 02:59 am in Digital Electronics and Logic Design

Q. When a flip-flop is reset, its output will be: ?

(A) Q=Q; Q’=1
(B) Q=1;Q’=0
(C) Q = 0;Q’=0
(D) Q=1;Q’=1

💬 Discuss

✅ Correct Answer: (A) Q=Q; Q’=1

Published by Ritu Nagar ⭐ 4.39K Points at 23-Jan-2025 06:20 am in Digital Electronics and Logic Design

Q. The basic R-S flip-flop is ?

(A) a monostable multivibrator
(B) a bistable multivibrator
(C) an astable multivibrator
(D) a Schmitt trigger

💬 Discuss

✅ Correct Answer: (B) a bistable multivibrator

Published by Bhagwan Das ⭐ 4.44K Points at 15-Sep-2024 04:45 am in Digital Electronics and Logic Design

Q. What is the number of selector lines required in a single input n-output demultiplexer ?

(A) 2
(B) n
(C) 2^n
(D) log? n

💬 Discuss

✅ Correct Answer: (D) log? n

Published by Priyanka Tomar ⭐ 35.28K Points at 16-Jul-2020 12:25 am in Digital Electronics and Logic Design

Q. If S=0, R = 1 is a SR flip-flop, ?

(A) Qn+1=Q’n
(B) Qn+1 = Qn
(C) Qn+1 = 0
(D) Qn+1 = 1

💬 Discuss

✅ Correct Answer: (C) Qn+1 = 0

Published by Vijay Sangwan ⭐ 28.62K Points at 30-May-2023 11:44 pm in Digital Electronics and Logic Design

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