The value of current gain `alpha` of trasistor is `0.98`. The value of `beta` will beA. `4.9`B. `490`C. `59`D. `49`

The value of current gain `alpha` of trasistor is `0.98`. The value of

1.	The value of current gain `alpha` of trasistor is `0.98`. The value of `beta` will beA. `4.9`B. `490`C. `59`D. `49`
Answer» Correct Answer - A Current gains are given by `alpha=(Deltai_(C))/(Deltai_(E))` and `beta=(Deltai_(C))/(Deltai_(B))` Where `Deltai_(C),Deltai_(E),Deltai_(B)` are change in collector current emitter current and base current respectively. The relation between `alpha` and `beta` is `beta=(alpha)/(1-alpha)` Given, `beta=0.98`, hence we have `beta=0.98/(1-0.98)=49`

Discussion

No Comment Found

Related InterviewSolutions

The depletion layer in diode is `1 mum` wide and the knee potential is `0.6 V`, then the electric field in the depletion layer will beA. zeroB. `0.6 Vm^(-1)`C. `6xx10^(4) V//m`D. `6xx10^(5)V//m`
The diagram shows an operational circuit. Which of the following correctely states the nature and magnitude of the amplification ? A. `{:("Nature","Magnitude of"(V_(0))/(V_(i))),("Inverting"," 0.2"):}`B. `{:("Nature","Magnitude of"(V_(0))/(V_(i))),("Inverting"," 5.0"):}`C. `{:("Nature","Magnitude of"(V_(0))/(V_(i))),("Non-inverting"," 0.2"):}`D. `{:("Nature","Magnitude of"(V_(0))/(V_(i))),("Non-inverting"," 5.0"):}`
The following truth table corresponds to the logic gate `|(A,0,0,1,1),(B,0,1,0,1),(X,0,1,1,1)|`A. `NAND`B. `OR`C. `AND`D. `XOR`
Which of the following gates corresponds to the truth table given below ? `|(A,B,X),(1,1,0),(1,0,1),(0,1,1),(0,0,1)|`A. `XOR`B. `OR`C. `NAND`D. `NOR`
The following truth table belongs to which one of the following four gates? `|(A,B,C),(1,1,0),(1,0,0),(0,1,0),(0,0,1)|`A. `OR`B. `NAND`C. `XOR`D. `NOR`
Pure sodium `(Na)` is a good conductor of electricity because the `3s` and `3p` atomic bands overlap to from a partially filled conduction band. By contrast the ionic sodium chloride `(NaCl)` crystal isA. InsulatorB. ConductorC. SemiconductorD. None of these
In an insulator, the forbidden energy gap between the valence band and conduction band is of the order ofA. `1 MeV`B. `0.1 MeV`C. `1 eV`D. `5 eV`
In a good conductor the energy gap between the conduction band and the valence band isA. InfiniteB. WideC. NarrowD. Zero
In a common emitter amplifier , when a signal of 40 mV is added to the input voltage, the base current changes by `100 muA` and emitter current changes by 2.1mA the trans-conductance isA. `1/20 Omega^(-1)`B. `1/50 Omega^(-1)`C. `50 Omega^(-1)`D. `15 Omega^(-1)`
In the given circuit, calculate the ratio of currents through the battery if (1) Key `K_(1)` is pressed, `K_(2)` open and then (2) Key `K_(2)` is pressed, key `K_(1)` is opened A. `1/2`B. 4C. 2D. 1

The value of current gain `alpha` of trasistor is `0.98`. The value of `beta` will beA. `4.9`B. `490`C. `59`D. `49`

Discussion

No Comment Found

Related InterviewSolutions

Reply to Comment