GATE ECE · 2025 · EC
Question 47: BJT and MOSFET amplifiers
Give it a try, then reveal the answer to check your work.
Question 47
ECMCQ2 marksNeeds review
In the circuit shown, the identical transistors Q1 and Q2 are biased in the active region with β = 120. The Zener diode is in the breakdown region with VZ = 5 V and IZ = 25 mA.
If IL = 12 mA and VEB1 = VEB2 = 0.7 V, then the values of R1 and R2 (in kΩ, rounded off to one decimal place) are ______, respectively.

Your answerChoose one option.
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerEXPLORE & PRACTISE
Paper and topic context
See where this question comes from and choose what to practise next.
2025EC
GATE ECE 2025 · Paper 1
Electronics and Communication Engineering · Original paper archive
- Section
- Electronics and Communication Engineering
- Question type
- Multiple choice (MCQ)
- Marks
- 2 marks
Practise related topics
Explore more previous year questions using this question’s imported topic tags.
electronics
GATE ECE previous year questions
communication engineering
GATE ECE previous year questions
signals and systems
GATE ECE previous year questions
bjt mosfet amplifiers
GATE ECE previous year questions
BJT and MOSFET amplifiers
GATE ECE previous year questions
n junction
GATE ECE previous year questions
P N junction
GATE ECE previous year questions
zener diode
GATE ECE previous year questions
Comments
Ask a question, share your approach, or help someone understand.
Log in to view the discussion
You’re not logged in. Log in or create an account to see discussions and add comments.