Question

if the current constant for a transistor are alpha and beta then

Answer 1

$\bold{ans : \alpha < 1 , \beta > 1}$



Alpha ( α ) : it is the ratio of collector current variations to emitter current variations. when no load and voltage be constant.
e.g., α = Ic/Ie
where , Ic is collector current variations
Ie is the emitter current variations

similarly,
Beta ( β ) : it is the ratio of collector current variations to base current variations on no load and constant voltage.
e.g., β = Ic/Ib

now, the relationship between alpha and beta
$\beta = \frac{\alpha}{1 - \alpha} \: \: or \: \: \: \: \: \: \alpha = \frac{ \beta}{ \beta + 1}$

from above relation it is clear that ,
α < 1 and β > 1

Answer 2

Alpha [α] is the ratio of collector current and emitter current

α=collector current/emitter current

α =IC/IE

Its value is less than 1

β is the ratio of collector current and base current.

β=Ic/Ib
Its value is greater than 100.

Relation between  α and β

β=α/1-α
α=β/β+1
Conclusion:α<1 and β>1