Two amplifiers are connected one after the other in series (cascaded).The first amplifier has a voltage gain of 10 and the second has a voltage gain of 20. If the input signal is 0.01 volt, calculate the tput ac signal.

The amplifiers X, Y and Z are connected in series. If the voltage gains of X, Y and Z are 10, 20 and 30, respectively and the input signal is 1 mV peak value, then what is the output signal voltage (peak value) if d.c. supply voltage is 10V?

The amplifiers X, Y and Z are connected in series. If the voltage gains of X, Y and Z are 10, 20 and 30, respectively and the input signal is 1 mV peak value, then what is the output signal voltage (peak value) if d.c. supply voltage is 5V?

Two amplifiers having voltage gains 20 and 50 are connected as shown in the figure. If the initial input voltage is 25 mV, find the final output voltage obtained.

A transistor has a current gain of 30. If the collector resistance is 6kOmega , input resistance is 1kOmega calculate its voltage gain.

For a transistor amplifier, the collecor load resistance R_(L) = 2k ohm and the input resistance R_(i) = 1k ohm . If the current gain is 50, calculate voltage gain of the amplifier.

the input resistance of a comon-emitter amplifier is 2kOmega and a.c. current gain is 20. If the laod resistor used is 5kOmega calculate the voltage gain of the amplifier

A transistor connected in common emitter configuration has input resistance R_("in")=2 K Omega and load resistance of 5 K Omega . If beta=60 and an input signal 12 mV is applied , calculate the resistance gain.

the input resistance of a comon-emitter amplifier is 2kOmega and a.c. current gain is 20. If the laod resistor used is 5kOmega calculate the transconductance of the transistor used.

An amplifier is represented by the circuit shown in Fig. Here r_(i) is the input resistance of the amplifier and the voltage V_(i) is appearing across it. This voltage is amplified by a factor A_(V) and appears across the load as voltage V_(0) An external voltage V_(s) is applied at the input terminals of the amplifier via series resistance R_(S). What will be the apparent gain A_(V)(=V_(0)//V_(s)) of the ampilifier in terms of A_(V), R_(S) and r_(i).