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Consider the following statements:
1. For finding the transistor behaviour at high frequency it is necessary to examine the diffusion mechanism.
2. At low frequency it is assumed that the transistor responds instantly to changes of input voltage or current.
3. The hybrid-jr model is valid under dynamic conditions when the rate of change of \/BEis small enough so that the base incremental current/^ is small compared with the collector incremental current/^
4. The parameter fTis a frequency characteristic of a transistor.
Which of the above statements are correct?
  • a)
    3 and 4    
  • b)
    1 and 3
  • c)
    1, 2, 3 and 4    
  • d)
    1 and 2
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
Consider the following statements:1.For finding the transistor behavio...
  • The mechanism of the transport of charge carriers from emitter to collector is essentially one of diffusion. Hence, for finding the transistor behaviour at high frequency it is n e ce ssa ry to exam ine the d iffu sio n mechanism. Hence, statement-1 is correct.
  • Statement-2 is also correct.
  • Statement-3 is also correct.
  • The frequency at which the short-circuit common-emitter current gain attains unit magnitude is represented by fT Thus, Statement - 4 is also correct.
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Consider the following statements:1.For finding the transistor behaviour at high frequency it is necessary to examine the diffusion mechanism.2.At low frequency it is assumed that the transistor responds instantly to changes of input voltage or current.3.The hybrid-jr model is valid under dynamic conditions when the rate of change of \/BEis small enough so that the base incremental current/^ is small compared with the collector incremental current/^4. The parameter fTis a frequency characteristic of a transistor.Which of the above statements are correct?a)3 and 4 b)1 and 3c)1, 2, 3 and 4 d)1 and 2Correct answer is option 'C'. Can you explain this answer?
Question Description
Consider the following statements:1.For finding the transistor behaviour at high frequency it is necessary to examine the diffusion mechanism.2.At low frequency it is assumed that the transistor responds instantly to changes of input voltage or current.3.The hybrid-jr model is valid under dynamic conditions when the rate of change of \/BEis small enough so that the base incremental current/^ is small compared with the collector incremental current/^4. The parameter fTis a frequency characteristic of a transistor.Which of the above statements are correct?a)3 and 4 b)1 and 3c)1, 2, 3 and 4 d)1 and 2Correct answer is option 'C'. 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 Consider the following statements:1.For finding the transistor behaviour at high frequency it is necessary to examine the diffusion mechanism.2.At low frequency it is assumed that the transistor responds instantly to changes of input voltage or current.3.The hybrid-jr model is valid under dynamic conditions when the rate of change of \/BEis small enough so that the base incremental current/^ is small compared with the collector incremental current/^4. The parameter fTis a frequency characteristic of a transistor.Which of the above statements are correct?a)3 and 4 b)1 and 3c)1, 2, 3 and 4 d)1 and 2Correct answer is option 'C'. 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 Consider the following statements:1.For finding the transistor behaviour at high frequency it is necessary to examine the diffusion mechanism.2.At low frequency it is assumed that the transistor responds instantly to changes of input voltage or current.3.The hybrid-jr model is valid under dynamic conditions when the rate of change of \/BEis small enough so that the base incremental current/^ is small compared with the collector incremental current/^4. The parameter fTis a frequency characteristic of a transistor.Which of the above statements are correct?a)3 and 4 b)1 and 3c)1, 2, 3 and 4 d)1 and 2Correct answer is option 'C'. Can you explain this answer?.
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