Q.1.
The total gain of a multistage amplifier is less than the product of the gains of individual stages due to ___________
Q.2.
In practice, voltage gain is expressed ___________
Q.3.
The upper or lower cut off frequency is also called ___________ frequency
Q.4.
The best frequency response is of ___________ coupling
Q.5.
The bandwidth of a single stage amplifier is ___________ that of a multistage amplifier
Q.6.
Transformer coupling is generally employed when load resistance is
Q.7.
In RC coupling, the value of coupling capacitor is about ___________
Q.8.
The ear is not sensitive to ___________
Q.9.
1 db corresponds to ___________ change in power level
Q.10.
An amplifier receives 0.1 W of input signal and delivers 15 W of signal power. What is the power gain in db?
Q.11.
An advantage of RC coupling scheme is the ___________
Q.12.
When a multistage amplifier is to amplify d.c. signal, then one must use coupling
Q.13.
1 db corresponds to ___________ change in voltage or current level
Q.14.
In an RC coupled amplifier, the voltage gain over mid-frequency range ___________
Q.15.
The purpose of RC or transformer coupling is to ___________
Q.16.
The frequency response of transformer coupling is ___________
Q.17.
RC coupling is generally confined to low power applications because of
Q.18.
___________ coupling provides the maximum voltage gain
Q.19.
The final stage of a multistage amplifier uses ___________
Q.20.
In obtaining the frequency response curve of an amplifier, the ___________