Class 12 Physics Chapter 14 Online Test – Semiconductor Electronics

For semiconductors the gap between valence and conduction energy bands is

A P-type semiconductor is

The impurity to get p type germanium or silicon semi conductor should be

(1+1) in binary addition is

Which one of the following logic gates is universal logic gate ?

Full wave rectifier uses

To obtain an oscillator from an amplifier the type of feedback used is

Diode is used as

In a transistor ,the majority charge carries are communicated towards the base by the part

Main gate (basic gate) is-

For P-N-P transistor with common base , the value of Alpha is 0.98 , then common emitter current hain beta will be

Junction transistor with back to back on junction was discovered by

When LED is reserved biased,

The group third element used asants for germanium and silicon gives us

Width of forbidden band is maximum for

At zero degree Kelvin the piece of germanium

In binary system 111 represent

Which configuration of transistor has highest voltage gain ?

The gap between conduction energy band and valence energy band is called

In full wave rectification if input frequency is 50 Hz then output frequency will be-

In N type semiconductors , majority charge carriers are

Diode maybe used to

Unit of amplification factor of transistor is

The temperature coefficient of a semiconductor is

For obtaining p type semiconductor travelent material is mixed in germanium but for obtaining and type semiconductor which is fixed with ge-

The impurity element used for p type semiconductor is

Majority carries in p type semiconductors are

A semi conductor is cooled from T1K to T2K , then its resistance will-

For NPN transistor is common base beta is 100 the current gain Alpha for common emitter will be

Which of the following is the Boolean expression of OR gates

The Boolean expression for AND gate is

Transistor can act as a switch in

The minority current carry in p type semiconductor are

With the increase of temperature,  the resistance of a semiconductor

The device to convert solar energy into electrical energy is