Electronics and Communication Engineering (ECE) Exam  >  Electronics and Communication Engineering (ECE) Questions  >  The common emitter forward current gain of th... Start Learning for Free
The common emitter forward current gain of the transistor shown is β = 100
The transistor is operating in
  • a)
    Saturation region
  • b)
    Cut-off region
  • c)
    Reverse active region
  • d)
    Forward active region
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
The common emitter forward current gain of the transistor shown is &be...

Assume Transistor in Active region
20 – 2 (IB + IC) – 0.7 – 250 IB – 10 = 0
20 – 2 × 101 IB – 0.7 – 250 IB – 10 = 0
10 – 452 IB – 0.7 = 0
20 – 2 (IB + IC) - VEC – 2IC = 0
20 – 202 IB - VEC = 0

VEC = 11.68 V
VCB = VCE + VEB = -VEC + VEB = - 11.68 + .7
VCB = -10.98
∴ Collector base junction is Reverse Biased
∴ Transistor is operating in forward active region

Second Method
Assume transistor in saturation region
IB min ≤ IB
i) VEB (sat) = 0.8 V
ii) VEC (sat) = 0.2 V

IC ≠ βIB ----- Because it is valid only active region
20 – 2 (IB + IC) – 0.8 - 250 IB – 10 = 0
20 – 2 IB – 2IC – 0.8 – 250 IB – 10 = 0
10 – 252 IB – 2IC – 0.8 = 0
252 IB + 2I= 9.2      -------- (1)
20 – 2 (IB + IC) – VEC(sat) – 2IC = 0
20 – 2IB – 2IC – 0.2 – 2IC = 19.8      -------- (2)
By solving equation (1) and (2)
IB = 0.00278 mA
IC = 4.95 mA

∴ IB(min) > IB
∴ Transistor is operating in forward active region
View all questions of this test
Explore Courses for Electronics and Communication Engineering (ECE) exam

Top Courses for Electronics and Communication Engineering (ECE)

The common emitter forward current gain of the transistor shown is β = 100The transistor is operating ina)Saturation regionb)Cut-off regionc)Reverse active regiond)Forward active regionCorrect answer is option 'D'. Can you explain this answer?
Question Description
The common emitter forward current gain of the transistor shown is β = 100The transistor is operating ina)Saturation regionb)Cut-off regionc)Reverse active regiond)Forward active regionCorrect 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 The common emitter forward current gain of the transistor shown is β = 100The transistor is operating ina)Saturation regionb)Cut-off regionc)Reverse active regiond)Forward active regionCorrect 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 The common emitter forward current gain of the transistor shown is β = 100The transistor is operating ina)Saturation regionb)Cut-off regionc)Reverse active regiond)Forward active regionCorrect answer is option 'D'. Can you explain this answer?.
Solutions for The common emitter forward current gain of the transistor shown is β = 100The transistor is operating ina)Saturation regionb)Cut-off regionc)Reverse active regiond)Forward active regionCorrect answer is option 'D'. Can you explain this answer? in English & in Hindi are available as part of our courses for Electronics and Communication Engineering (ECE). Download more important topics, notes, lectures and mock test series for Electronics and Communication Engineering (ECE) Exam by signing up for free.
Here you can find the meaning of The common emitter forward current gain of the transistor shown is β = 100The transistor is operating ina)Saturation regionb)Cut-off regionc)Reverse active regiond)Forward active regionCorrect answer is option 'D'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of The common emitter forward current gain of the transistor shown is β = 100The transistor is operating ina)Saturation regionb)Cut-off regionc)Reverse active regiond)Forward active regionCorrect answer is option 'D'. Can you explain this answer?, a detailed solution for The common emitter forward current gain of the transistor shown is β = 100The transistor is operating ina)Saturation regionb)Cut-off regionc)Reverse active regiond)Forward active regionCorrect answer is option 'D'. Can you explain this answer? has been provided alongside types of The common emitter forward current gain of the transistor shown is β = 100The transistor is operating ina)Saturation regionb)Cut-off regionc)Reverse active regiond)Forward active regionCorrect answer is option 'D'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice The common emitter forward current gain of the transistor shown is β = 100The transistor is operating ina)Saturation regionb)Cut-off regionc)Reverse active regiond)Forward active regionCorrect answer is option 'D'. Can you explain this answer? tests, examples and also practice Electronics and Communication Engineering (ECE) tests.
Explore Courses for Electronics and Communication Engineering (ECE) exam

Top Courses for Electronics and Communication Engineering (ECE)

Explore Courses
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev