WHAT IS SEMICONDUCTOR? EXPLAIN DETAIL. FOR EXAMPLE TAKE A
PENCIL.THE LEAD IS MADE UP OF GRAPHITE IT IS A
CONDUCTOR.THE OUTER COVER IS MADE UP OF WOOD IT IS
INSULATOR.PENCIL IS A SEMICODUCTOR MATERIAL.
Answer Posted / abcde
Semiconductor is more like an insulator since they both
have a bandgap. The only difference is the bandgap of
semiconductor is smaller than an insulator. At low
temperature, intrinsic(undoped) semiconductor is an
insulator. A semiconduct's resistivity decrease with
increasing temperature, while a metal's resitivity increase
with increasing temperature.
| Is This Answer Correct ? | 11 Yes | 2 No |
Post New Answer View All Answers
How to calculate the size of earth cable to earth the neutral of UPS ?
What do you mean by Stimulastion Test in Diesel Genarator / Why & when it's conducted ?
If we need 4c× 50mm sq cable but it's not available so we can pull 4c×25mm sq two cables?
How select ELCB for 32amp. socket having quantity 12Nos. We have to do this wiring in PLANT. Please Also explain the incoming cable specification.
What is the method of estamating of cable, CB,MCB ?
WHAT IS VCB SAFETY
sir, 3phase induction motor takes different pf and different KW in three phase while running,explain reason
how brushed dc motor operating ?
Explain about retrofitting of machine tool.
Is there any problem about which the drive (inverter) doesn't show/display the alarm and/or fault but instead of this , it doesn't work ? I want to know that could there be any kind of problem in the drive when the drive doesn't display the alarm and/or fault ?
What is capacitance?
why co incidence factor considered in transformer sizing?
When a single pase capacitor run motor- run on 230vac and Case(1)run with 8 Mfd 250 vac.capacitor , Case( 2) run with 8 Mfd 400vac capacitor. What is difference between both case regarding power ,efficiency etc?
How to work definite,over pluxing,revers power,OSR relay
after how many spot we must chang secondry cable in portable spot welding gun?