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Assertion (A): All oscillators require positive feedback for their operation.
Reason (R): Any circuit which is used to generate a periodic voltage without an a.c. input signal is called an oscillator.
  • a)
    Both A and R are true and R is the correct explanation of A.
  • b)
    Both A and R are true but R is not the correct explanation of A.
  • c)
    A is true but R is false.
  • d)
    A is false but R is true.
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
Assertion (A): All oscillators require positive feedback for their ope...
Ail oscillators do not require positive feedback for their operation because if the positive resistance of the LC tank circuit is cancelled by introducing the right amount of negative resistance across the tank circuit, then the steady oscillation can be maintained. Some of the devices which possess negative resistance as mentioned above are dynatron, transitron, UJT and tunnel diode. Hence, assertion is not correct.
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Assertion (A): All oscillators require positive feedback for their operation.Reason (R): Any circuit which is used to generate a periodic voltage without an a.c. input signal is called an oscillator.a)Both A and R are true and R is the correct explanation of A.b)Both A and R are true but R is not the correct explanation of A.c)A is true but R is false.d)A is false but R is true.Correct answer is option 'D'. Can you explain this answer?
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Assertion (A): All oscillators require positive feedback for their operation.Reason (R): Any circuit which is used to generate a periodic voltage without an a.c. input signal is called an oscillator.a)Both A and R are true and R is the correct explanation of A.b)Both A and R are true but R is not the correct explanation of A.c)A is true but R is false.d)A is false but R is true.Correct answer is option 'D'. Can you explain this answer? for Electronics and Communication Engineering (ECE) 2024 is part of Electronics and Communication Engineering (ECE) preparation. The Question and answers have been prepared according to the Electronics and Communication Engineering (ECE) exam syllabus. Information about Assertion (A): All oscillators require positive feedback for their operation.Reason (R): Any circuit which is used to generate a periodic voltage without an a.c. input signal is called an oscillator.a)Both A and R are true and R is the correct explanation of A.b)Both A and R are true but R is not the correct explanation of A.c)A is true but R is false.d)A is false but R is true.Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for Electronics and Communication Engineering (ECE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Assertion (A): All oscillators require positive feedback for their operation.Reason (R): Any circuit which is used to generate a periodic voltage without an a.c. input signal is called an oscillator.a)Both A and R are true and R is the correct explanation of A.b)Both A and R are true but R is not the correct explanation of A.c)A is true but R is false.d)A is false but R is true.Correct answer is option 'D'. Can you explain this answer?.
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