Question
A transistor works as an amplifier only when:
/>Solution
A transistor has three regions: the emitter, the base, and the collector, forming two p-n junctions: the emitter-base (EB) junction and the collector-base (CB) junction. The way these junctions are biased determines the operating region of the transistor. For a transistor to function as an amplifier, it needs to operate in the active region . In the active region:
- The emitter-base junction is forward biased . This allows a large number of majority carriers from the emitter to flow into the base.
- The collector-base junction is reverse biased . This creates a potential barrier that attracts the minority carriers (that have diffused through the base from the emitter) towards the collector, resulting in a collector current that is controlled by the base current.
Select the option that represents the letters that when sequentially placed from left to right in the blanks below, will complete the letter series.
...Select the option that represents the letters that, when placed from left to right in the same sequence in the blanks below, will complete the letter se...
Select the combination of numbers that when placed sequentially in the blanks of the given series will complete the series.
a b _ d _ f g _ i _...
Select the combination of letters that when sequentially placed in the blanks of the given letter series will complete the series.
p _ _ _ q r _ ...
Select the combination of letters that when sequentially placed in the blanks of the given letter series will complete the series.
m _ _ _ n o _ ...
Select the option that represents the letters that, when sequentially placed from left to right in the blanks below, will complete the letter series.
RQP, ONM, ____, IHG, FED, find the missing letters
Select the combination of letters that when sequentially placed in the blanks of the given series will complete the series.
G _ I _ K G H I _ K _ _ _ J K
Select the letter-cluster from among the given options that can replace the question mark (?) in the following series.
OA, LG, IM, FS, (?)
...Select the combination of letters that when sequentially placed in the blanks of the given letter series will complete the series.
g _ _ _ h i _ ...
Relevant for Exams:
