The action of a JFET in its equivalent circuit can be best represented as a

Three identical amplifiers with each one having a voltage gain of 50, input Resistance of 1 KΩ and output resistance of 250Ω, are cascaded. The open circuit voltage gain of the combined Amplifier is

In the amplifier circuit shown in the figure, the values of R₁ and R₂ are such that the transistor is operating at V_CE = 3V and I_C = 1.5 mA when its $$\beta $$ is 150. For a transistor with $$\beta $$ of 200, the operating point (V_CE, I_C) is

If S represents the carrier synchronization at the receiver and $$\rho $$ represents the bandwidth efficiency, then the correct statement for the coherent binary PSK is