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Assertion (A): The Darlington connection of three or more transistors is usually impractical.
Reason (R): The Darlington emitter follower has a higher input resistance and a voltage gain less close to unity than does a single-stage emitter follower.
Reason (R): The Darlington emitter follower has a higher input resistance and a voltage gain less close to unity than does a single-stage emitter follower.
- 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 'B'. Can you explain this answer?
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Assertion (A): The Darlington connection of three or more transistors ...
The Darlington connection of three or more transistors is usually impractical because leakage current of the first transistor is amplified by the second due to which the overall leakage current may become high.
Reason is individually a correct statement. Hence, both assertion and reason are correct but reason is not the correct explanation of assertion.
Reason is individually a correct statement. Hence, both assertion and reason are correct but reason is not the correct explanation of assertion.
Most Upvoted Answer
Assertion (A): The Darlington connection of three or more transistors ...
Explanation:
The Darlington connection of three or more transistors is usually impractical because of the following reasons:
Reasons:
Therefore, even though the Darlington connection offers advantages such as high input impedance, low output impedance, and high current gain, it is usually impractical to use it in circuits that require high bandwidth, low power dissipation, or low input current.
The Darlington connection of three or more transistors is usually impractical because of the following reasons:
Reasons:
- The input resistance of the Darlington emitter follower is high, which reduces the current gain. This means that the base current required for a given collector current is higher than that required for a single-stage emitter follower.
- The voltage gain of the Darlington emitter follower is less close to unity than that of a single-stage emitter follower. This means that the output voltage of the Darlington connection is lower than that of a single-stage emitter follower.
- The Darlington connection increases the overall capacitance of the circuit, which can lead to stability problems at higher frequencies.
- The Darlington connection increases the overall power dissipation of the circuit, which can lead to thermal problems in high-power applications.
Therefore, even though the Darlington connection offers advantages such as high input impedance, low output impedance, and high current gain, it is usually impractical to use it in circuits that require high bandwidth, low power dissipation, or low input current.
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Assertion (A): The Darlington connection of three or more transistors is usually impractical.Reason (R): The Darlington emitter follower has a higher input resistance and a voltage gain less close to unity than does a single-stage emitter follower.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 'B'. Can you explain this answer?
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Assertion (A): The Darlington connection of three or more transistors is usually impractical.Reason (R): The Darlington emitter follower has a higher input resistance and a voltage gain less close to unity than does a single-stage emitter follower.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 'B'. Can you explain this answer? for Electrical Engineering (EE) 2024 is part of Electrical Engineering (EE) preparation. The Question and answers have been prepared according to the Electrical Engineering (EE) exam syllabus. Information about Assertion (A): The Darlington connection of three or more transistors is usually impractical.Reason (R): The Darlington emitter follower has a higher input resistance and a voltage gain less close to unity than does a single-stage emitter follower.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 'B'. Can you explain this answer? covers all topics & solutions for Electrical Engineering (EE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Assertion (A): The Darlington connection of three or more transistors is usually impractical.Reason (R): The Darlington emitter follower has a higher input resistance and a voltage gain less close to unity than does a single-stage emitter follower.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 'B'. Can you explain this answer?.
Assertion (A): The Darlington connection of three or more transistors is usually impractical.Reason (R): The Darlington emitter follower has a higher input resistance and a voltage gain less close to unity than does a single-stage emitter follower.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 'B'. Can you explain this answer? for Electrical Engineering (EE) 2024 is part of Electrical Engineering (EE) preparation. The Question and answers have been prepared according to the Electrical Engineering (EE) exam syllabus. Information about Assertion (A): The Darlington connection of three or more transistors is usually impractical.Reason (R): The Darlington emitter follower has a higher input resistance and a voltage gain less close to unity than does a single-stage emitter follower.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 'B'. Can you explain this answer? covers all topics & solutions for Electrical Engineering (EE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Assertion (A): The Darlington connection of three or more transistors is usually impractical.Reason (R): The Darlington emitter follower has a higher input resistance and a voltage gain less close to unity than does a single-stage emitter follower.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 'B'. Can you explain this answer?.
Solutions for Assertion (A): The Darlington connection of three or more transistors is usually impractical.Reason (R): The Darlington emitter follower has a higher input resistance and a voltage gain less close to unity than does a single-stage emitter follower.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 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for Electrical Engineering (EE).
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ample number of questions to practice Assertion (A): The Darlington connection of three or more transistors is usually impractical.Reason (R): The Darlington emitter follower has a higher input resistance and a voltage gain less close to unity than does a single-stage emitter follower.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 'B'. Can you explain this answer? tests, examples and also practice Electrical Engineering (EE) tests.
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