Q2- EST(ELECTRONIC CIRCUIT DEVICES)

Materials which can conduct electricity better than insulator,but not as well as conductors. This is the definition of

• diode

• semiconductor

• conductor

• insulator

• superconductor

Which is not one of the properties of semiconductor?

• 4 electrons in outermost orbit, in covalent bonding.

• atoms vibrate causes electron to break free from the bonds.

• Electron free leaves hole.

• Semiconductor has 2 types of charge carriers.

• all of the above are the properties of it

Doping of Semiconductors

• materials which can conduct electricity better than insulator, but not as well as conductors.

• The process of adding of a certain amount of specific impurities atoms in the pure semiconductor.

• when 4 electrons in outermost orbit.

what is the meaning of rectification?

• a process of smoothing using a capacitor

• a process of adding impurities to pure materials

• a process of converting an alternating current into a direct current by using a diode.

zener diode is operated in_____region

• break down

• forward characteristics

• knee voltage

• none

A zener diode is used as a ......

• rectifier

• amplifier

• oscillator

• voltae regulator

The region on either side of the junction which becomes free from the mobile charge carriers is called

• Energy gap region

• Charge free region

• Diffusion region

• Depletion region

The p-n junction which generates an emf when solar radiation falls on it, with no external bias applied, is a

• Light Emitting diode

• Photodiode

• Solar cell

• Zener Diode

In the forward bias arrangement of a p-n junction diode,

• the n-end is connected to the positive terminal of the battery

• the p-end is connected to the positive terminal of the battery

• the direction of current is from n-end to p-end in the diode

• the p-end is connected to the negative terminal of the battery

The best answer for this figure

• Diodes

• the white strip is Anode

• consist of n-type and p-type

• These components do not have polarity