RC coupling
Impedance coupling
Transformer coupling
Direct coupling
impedance of choke varies with frequency
choke is quite bulky and occupies large space
expensive in comparison to RC coupling
all the above stated disadvantages
high efficiency
high power gain
low distortion
all the above stated reasons
positive half cycle of the input only
negative half cycle of the input only
entire cycle of the input
less than positive half cycle of the input
negative feedback
positive feedback
voltage feedback
current feedback