transistor//
yes, diode can be used as rectifier diode to convert ac to dc
whether we know that p-n diode is real diode. But still in case of semeconductor we see then silics is real diode.
A diode is used primarily as a Rectifier
Bipolar Transistors and Diode's .
A diode can only be biased in one direction at a time. It is either forward biased, in which case it conducts, or it is reverse biased in which case it does not, unless its reverse breakdown voltage has been reached. Perhaps you are thinking of a half-wave rectifier, where only one diode is used to conduct on alternate half-cycles of the AC input?
The first letter B indicates what the diode is made of, i.e. B stands for Silicon, hence it is a Silicon diode in this case (it could have been a Germanium diode if the first letter was A instead of B). And the second letter, Y in this case stands for the function of the diode, i.e. Rectifier (As these diodes are often used in rectifier circuits). Other second alphabets could be A, B, or Z which stand for separate functions (which I don't remember at the moment).
yes ofcourse diode can be used as rectifier but it's an uncontrolled rectification.
zener diode
varactor diode is a correct answer
It's a high voltage diode, typically used in microwave ovens.
The difference between the pn-junction diode and the zener diode is that the pn-junction diode is used for rectification while the zener diode is used for rectification and stabilization. Also, the zener diode can function in the breakdown region while the pn-juntion diode can not function in that regime.
The use of the pn diode is for rectification. It can also be used as a switch.