ELECTRONICS INTERVIEW QUESTIONS

INTERVIEW QUESTIONS ON ELECTRONICS

What is electronics?

> Electronics deals with the flow of electrons, it is study of control of movement of electrons

What are the electronic devices?

> electronic devices are television, laptops, computers, mobile phones ... etc

What is classification of materials depending on current flow?

> there is classification of materials depends on current flow is as conductor, semiconductor, insulator

What is conductor ?

> conductor is one where the current flow is high that means there resistance to flow is nearly zero.

What are the examples of conductors?

 > metals like iron etc

What is semiconductor?

> semiconductor is one where conducts the current not same as conductor because it has some resistance to stop the flow of current. 

What are the examples of semiconductor ?

> silicon, germanium

What is insulator?

> insulator is one where the flow of current is very low that means nearly zero. that is the resistance is very high

What are the examples of insulators?

>wood, rubber

THESE ARE THE BASIC ELECTRONICS INTERVIEW QUESTIONS FOR MORE QUESTIONS AND INTERVIEW DOUBTS PLEASE FOLLOW. 

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ANALOG MODULATION TECHNIQUES

Analog modulation techniques are the modulation technique which are performed by the analog signals only, that means there is no changing into digital data.

in this both base band or message signal and carrier signal are in analog in nature

these analog modulation techniques are

• amplitude modulation 
• phase modulation
• frequency modulation

amplitude modulation 

amplitude modulation is defined as amplitude of the carrier signal changes with respect to message signal. that means here carrier signal characteristic of amplitude changes according to message signal.

phase modulation

phase modulation is defined as phase of the carrier signal changes with respect to message signal or base band signal. that means carrier signal characteristic of phase changes according to message signal.

frequency modulation 

frequency modulation is defined as frequency of the carrier signal changes with respect to message signal. that means the frequency characteristic of carrier signal changes according to message signal.

frequency = 1/time period 

band width is defined as the difference of the upper frequency and lower frequency in a spectrum.

Band Width   = fup - flow

note: please comment that you need any topic of analog communication