Related Questions

If the current gain of the amplifier is X, its voltage gain is Y, then its power gain will be
A $$\frac{{\text{X}}}{{\text{Y}}}$$
B X × Y
C X + Y
D X - Y
When negative voltage feedback is applied to an amplifier, its voltage gain ___________
A Is increased
B Is reduced
C Remains the same
D None of the above
The maximum efficiency of transformer coupled class A power amplifier is ___________
A 30%
B 50%
C 80%
D 45%
The gain of an amplifier with feedback is known as ___________ gain
A Resonant
B Open loop
C Closed loop
D None of the above
If a transistor amplifier feeds a load of low resistance (e.g. speaker), then voltage gain will be ___________
A High
B Very high
C Moderate
D Low
In order to get more voltage gain from a transistor amplifier, the transistor used should have ___________
A Thin base
B Thin collector
C Wide emitter
D None of the above
The voltage gain of a tuned amplifier is ___________ at resonant frequency
A Minimum
B Maximum
C Half-way between maximum and minimum
D Zero
In a CE amplifier, the phase difference between voltage across collector load RC and signal voltage is ___________
A 180°
B 270°
C 90°
D 0°
On selling a chair at 7% loss and a table at 17% gain, a man gains Tk 296. If he sells the chair at 7% gain and the table at 12% gain, then he gains Tk. 400. The actual price of the table is ---
A Tk. 2400
B Tk. 2200
C Tk. 1800
D Tk. 1600
The common mode voltage gain of a differential amplifier is equal to RC divided by
A re
B 2re
C $$\frac{{{{\text{r}}_{\text{e}}}}}{2}$$
D 2RE

Next steps