A gain of 1,000,000 times in power is expressed by_____________?
Correct answer: B. 60 db
- A. 30 db
- B. 60 db
- C. 120 db
- D. 600 db
Explanation
Power gain in decibels is 10 log10(Ap), so 10 log10(1,000,000) = 10×6 = 60 dB. The factor of 20 is used for voltage or current ratios, not power ratios.
Last updated
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.
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.
Related questions
1 db corresponds to_____________change in power level?
A 1,000 V power supply would use_____________ as a filter capacitor?
A 10 V power supply would use ____________ as filter capacitor?
A 2-transistor class B power amplifier is commonly called ______________ amplifier?
A 25eV electron has a speed of______________?