Introduction to diodes - class-X
Description: introduction to diodes | |
Number of Questions: 17 | |
Created by: Shankara Prabhu | |
Tags: electronic devices semiconductor electronics: materials, devices and simple circuits electric circuits physics |
For the plate voltage, the plate current in a triode valve is maximum when the potential of :
For detecting intensity of light we use
In the forward bias characteristic curve, a diode appears as :
A p-n junction diode cannot be used
If ‘p’ region of a semi conductor is connected to negative and ‘n’ region to positive pole, it is said to be
For germanium diode, the junction voltage is about _____.
Diode can work as
For detecting the light_______________.
In a diode detector, output circuit consist of $R=1M\Omega \quad and\quad C=1pF$. Calculate the carrier frequency it can detect.
Select the correct statement from the following
A light emitting diode (LED) has a voltage drop of 2 V across it and passes a current of 10 mA. When it operates with a 6 V battery through a limiting resistor R, the value of R is
When a diode is heavily doped the
The relation between dynamic plate resistance $\left( r _ { p } \right)$ of a vacuum diode and plate current in the space charge limited region, is
Zener diode is used as
What is the work function of tungsten at $1500\ K$ temperature, when a diode valve with a tungsten filament works at $1500\ K$? Assume the work function of tungsten at $0\ K$ is $4.52\ eV$:
Diodes are used to ___________.