Explain when a sample of germanium and silicon having same impurity density are kept at room temperature then resistivity of silicon will be higher than that of germanium, why?

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diode is active or passive and why?

9 Answers  

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why and when we use fibre optic ? how one can decide to use any type of cable specially fiber optic cable ?

4 Answers   CMS,

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Hi..Iam going to give Junior Engineer exam og Railway mumbai I wanted to kow where i will get study stuff and GK books? Plz its urgent

1 Answers  

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On what principle the sonar/ radar works

3 Answers  

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what is the main diferance b/w the electronic and electrical?

5 Answers  

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What are the disadvantages of the harmonics present in the inverter system?

0 Answers  

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what is a mixed adder

1 Answers  

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am going 2 write railway exam 4 d post of section engineer..i wnt 2 knw abt d que pattern n d previous year que papers

0 Answers   RRB,

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Name the two forms of boolean expression?

0 Answers  

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What's the difference betweem Pulse dopler radar and MTI RADAR....

5 Answers  

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in human body which current flow? ac or dc and how

1 Answers   Fairchild,

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