Interested to Buy Any Domain ? << Click Here >> for more details...
Answer Posted / thowsif_emerson_csm team
NPN Transistor :-
Just as in the case of the PN junction diode, the N
material comprising the two end sections of the NP N
transistor contains a number of free electrons, while the
center P section contains an excess number of holes. The
action at each junction between these sections is the same
as that previously described for the diode; that is,
depletion regions develop and the junction barrier appears.
To use the transistor as an amplifier, each of these
junctions must be modified by some external bias voltage.
PNP Transisitor:-The PNP transistor works essentially the
same as the NPN transistor. However, since the emitter,
base, and collector in the PNP transistor are made of
materials that are different from those used in the NPN
transistor, different current carriers flow in the PNP
unit. The majority current carriers in the PNP transistor
are holes. This is in contrast to the NPN transistor where
the majority current carriers are electrons. To support
this different type of current (hole flow), the bias
batteries are reversed for the PNP transistor.
| Is This Answer Correct ? | 14 Yes | 4 No |
Post New Answer View All Answers
i need the curve duty cycle and amper for (150 kva @50% dyty cycle) transformer turn ratio :19 and vin 400
what is resver in electrical enginnering with answer
Why does an induction generator is preffered as compared to synchronous generator in especially a wind energy power production project?
Is there possible to Test Transformer for Overfluxing Capability. Or is there any firm who does Overfluxing Test on Transformer?
Disadventage of cable-gland earthing if any ?
What is a copper loss or i2r loss pc?
What are the conditions to be satisfied for parallel operation of dc generators?
why do we have spikes enough to burn electronic boards, when generators are not grounded
If 100 KAV USP dedicated earth got disconnect / Cut. What will happen at load.
What is knee point voltage of transformer?
How can we find the breaking capacity of a Load breaker switch (LBS) fed from 11 kv supply??ex:50KA, 26kA etc???detailed step vice answer pls.
mccb service sittings be done?
hii this is ranjith from hyd... i want to know what type of questions they ask in interview...and hw the interview will go..? what subjects thay ask specially for electrical engg students?
how can we design robots
In case of salient pole alternator when number of poles are 4 or more than 4 it helps the flux wave to be sinusoid as air gap length is increased from center to tip , but if the number of poles are 2 how does the flux wave is sinusoidal?
