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Higher Study | Analog Electronics | Diodes and Its Applications

Which of the following diodes uses a metal-semiconductor junction?
Which among the following act as a switch in switching regulator?
A limiter circuit is also known as a:
A photodiode works on the principle of
A Zener diode:
In an arc rectifier, the drop in voltage at the cathode is approximately
A working diode must have
In the figure, D1 is a real silicon p-n junction diode with a drop of 0.7 V under forward bias condition and D2 is a Zener diode with breakdown voltage of -6.8 V. The input Vin(t) is a periodic square wave of period T, whose one period is shown in the figure. Assuming 10τ ≪ T, where τ is the time constant of the circuit, the maximum and minimum values of the output waveform are respectively,
The basic reason why a full-wave rectifier has twice the efficiency of a half-wave rectifier is, that:
A diode when reversed biased acts as-
When the pnpn diode is biased such that the p side is more positive than the n side, the junctions I1 and I3 are:
Select the option that is true regarding the following two statements labeled Assertion (A) and Reason (R). Assertion (A): Whenever we measure an electrical signal, there are chances of over current which leads to overheating of the meter. In such cases, the meter can be protected by using a semiconductor diode of suitable rating. Reason (R): As soon as the diode is short-circuited, the meter current is diverted through the diode. As a result, the meter is being protected from excess heating.
The purpose of using a Bleeder resistor across the filter, when designing a d.c. power supply is
In the full-wave rectifier circuit shown in the figure, the diodes that conduct when the positive half-wave of AC signal applied are:
When the diode is forward biased, it is equivalent to
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