A. 60 db
B. 30 db
C. 120 db
D. 600 db
0
The upper or lower cut off frequency is also called______________frequency?
0
The power output of an audio system is 18 W. For a person to notice an increase in the output (loudness or sound intensity) of the system, what must the output power be increased to ?
A. Resonant
B. Sideband
C. 3 db
D. None of the above
0
The number of stages that can be directly coupled is limited because___________?
A. 2 W
B. 6 W
C. 68 W
D. None of the above
0
The bandwidth of a single stage amplifier is_____________that of a multistage amplifier?
A. Changes in temperature cause thermal instability
B. Circuit becomes heavy and costly
C. It becomes difficult to bias the circuit
D. None of the above
0
The output of a microphone is rated at -52 db. The reference level is 1V under specified conditions. What is the output voltage of this microphone under the same sound conditions?
A. More than
B. The same as
C. Less than
D. Data insufficient
0
If the power level of an amplifier reduces to half, the db gain will fall by___________?
A. 5 mV
B. 2 mV
C. 8 mV
D. 5 mV
0
In the initial stages of a multistage amplifier, we use______________?
A. 5 db
B. 2 db
C. 10 db
D. 3 db
0
A gain of 1,000,000 times in power is expressed by_____________?
A. RC coupling
B. Transformer coupling
C. Direct coupling
D. None of the above