In transistor amplifiers, we use_____________transformer for impedance matching?
Correct answer: B. Step down
- A. Step up
- B. Step down
- C. Same turn ratio
- D. None of the above
Explanation
A transistor collector generally has relatively high impedance, while the load may be low impedance. A step-down transformer converts the high collector impedance to a lower load impedance for better power transfer.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
Practise Electronics and Devices
758 free Electronics and Devices MCQs from Electrical Engineering, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Electrical Engineering questions like this
Electrical Engineering is on 2 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Electronics and Devices questions
A gain of 1,000,000 times in power is expressed by_____________?
In the initial stages of a multistage amplifier, we use______________?
If the power level of an amplifier reduces to half, the db gain will fall by___________?
If a three-stage amplifier has individual stage gains of 10 db, 5 db and 12 db, then total gain in db is____________?
Transformer coupling is generally employed when load resistance is______________?
The best frequency response is of_____________coupling?