sir, i have completed engineering diploma in electronics and now got the call letter for written exam for the post "junior engineer" from rrb chennai. could you help me about the model and type of questions that i should prepair?

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an unknown semiconductor has Eg=1.1ev and Nv=Nc.it is doped with 10^15 donors,where the donor level is 0.2ev below Ec. given that Ef is 0.25ev below Ec, calculate ni and the concentration of electrons and holes in the semiconductor at 300k.

1 Answers   Universiti Malaysia Pahang,

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WHY NEGATIVE DC VOLTAGE IS REQUIRED AS POWER SUPPLY FOR INTEGRATED CIRCUITS

5 Answers  

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IN AN OSCILLOSCOPE TWO COUPLING IS THERE, THAT IS AC & DC COUPLING, WHERE DO WE USE THESE COUPLINGS ?

2 Answers   DRDO, VH,

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what is the active & passive component in electronics circuit give me the list of all active and passive component

2 Answers  

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What are the two modes of mosfet?

0 Answers  

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main() { int i=5; printf("%d%d%d%d%d%d",i++,i--,++i,--i,i); }

5 Answers  

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Define what is the effect of temperature on the reverse current of a p-n junction?

0 Answers  

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What is barrial  shifter and how it works?

1 Answers   Exira,

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how do link aT1 from the 1st BTS to 2nd BTS4?

0 Answers   Ericsson,

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What is Cell Splitting?

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What is a high-pass filter?

0 Answers  

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