A. 0 dB
B. 8.30 dB
C. -8.30 dB
D. 0.8 dB
Related Mcqs:
- A balanced Wheatstone bridge consists of an RV of 3,500 Ω, an R2 of 200 Ω, and an R3 of 680 Ω. The value of RUNK is____________?
A. 680 Ω
B. 1,029 Ω
C. 200 Ω
D. 880 Ω - The size of an excavator is usually expressed in terms of_________________?
A. ‘crowd’ motion
B. angle of swing
C. cubic metres
D. travel in metres - The capacity of a crane is expressed in terms of_______________?
A. type of drive
B. span
C. tonnes
D. any of the above - The noise factor of an ideal amplifier expressed in db is_____________?
A. 0
B. 1
C. 1
D. 10 - The gain of an amplifier is expressed in db because_____________?
A. It is a simple unit
B. Calculations become easy
C. Human ear response is logarithmic
D. None of the above - A gain of 1,000,000 times in power is expressed by_____________?
A. 30 db
B. 60 db
C. 120 db
D. 600 db - A gain of 1000 times in voltage is expressed by_______________?
A. 60 db
B. 30 db
C. 120 db
D. 600 db - The parallel combination of a 470 Ω resistor and a 1.5 kΩ resistor is in series with the parallel combination of five 1 kΩ resistors. The source voltage is 50 V. The percentage of the load current through any single 1 KΩ resistor is__________?
A. 25 %
B. 20 %
C. 100 %
D. 50 % - At a certain frequency, the output voltage of a filter is 6 V and the input is 12 V. The voltage ratio in decibels is_____________?
A. 6.02 dB
B. -6.02 dB
C. 12.04 dB
D. -12.04 dB - A transformer coupled class A power amplifier has a load of 100 O on the secondary. If the turn ratio is 10:1, what is the value of load appearing on the primary?
A. 5 kO
B. 20 kO
C. 100 kO
D. 10 kO
