GATE EE 2018 Set 1 — Question 46
Go beyond PYQs with Success TrackerAI-powered personalised practice and doubt support. Unlimited practice on eligible plans; AI usage limits apply.MCQ+2 / -0.67HardRing & Johnson CountersDigital Logic CircuitsAnalog & Digital Electronics
Analog & Digital Electronics → Digital Logic Circuits → Ring & Johnson Counters
Last updated
Question
Which one of the following statements is true about the digital circuit shown in the figure
Correct answer
(B) It can be used for dividing the input frequency by 5.
Solution
Let the outputs of the three D flip-flops be from left to right. The circuit is a shift register with feedback.
From the diagram:
(NAND gate feedback)
Let's trace the states :
Checking other states:
From the diagram:
(NAND gate feedback)
Let's trace the states :
1.Start with :
2.:
3.:
4.:
5.:
6.: (Cycle repeats)
The main cycle is , which has a length of 5. Checking other states:
- (enters cycle)
- : (enters cycle)
- : (enters cycle)
Continue learning with Success Tracker
A step still unclear? Work through it with support
Use Success Tracker to ask about the reasoning, then try another GATE EE question to check your understanding.
AI-powered practice· Unlimited practice on eligible plans
- PYQs with solutions
- Attempt available previous-year questions, then compare your reasoning with the worked solution. Coverage varies by stream.
- Practice that adapts
- Choose a topic, work on weaker areas and bookmark questions to revisit. Your attempts feed your progress tracking.
- AI doubt support
- Ask follow-up questions about a step or concept while practising, instead of stopping at the final answer.
Unlimited practice is available on eligible plans. Free practice and AI usage have limits; check the current plan allowances before choosing.
This page stays readable without an account. AI responses can be wrong; check them against the solution and source material.
More questions on Digital Logic Circuits
2026 Set 1 Q33In the linear regulator circuit shown, the base to emitter voltage of the BJT is…2026 Set 1 Q37In the circuit shown, the open loop gain of the operational amplifier is . What is the…2026 Set 1 Q45The digital circuit shown has 3 inputs (, , and ). The simplified logical expression for…2026 Set 1 Q46The MOSFET switches shown in the circuit are ideal. [figure] Which of the following is the correct…2026 Set 1 Q61Consider the circuit shown. Assume that the diode () is ideal. Given …