Student Login

Home›Chapters›Semiconductor Electronics PYQs›Junction Transistor›Question 39

MHT CET 2024 (2 May, Shift 1) · Junction Transistor

Junction Transistor question from MHT CET 2024 (2 May, Shift 1)

Q39MHT CET 2024 · 2 MAY · SHIFT 1Medium

Junction Transistor

In an NPN transistor $10^{10}$ electrons enter the emitter in $10^{-6}\text{ s}$ and $2\%$ electrons recombine with holes in base. The current ratios ' $\alpha$ ' and ' $\beta$ ' of a transistor are respectively (nearly)

Show answer and solution

Answer: (a)

$2\%$ of electrons recombine in the base, so $98\%$ reach the collector: $\alpha = \dfrac{I_C}{I_E} = 0.98$ .
$\beta = \dfrac{\alpha}{1-\alpha} = \dfrac{0.98}{0.02} = 49$
So the answer is (a) $0.98, 49$ .

Report a mistake

More questions on Junction Transistor

The current amplification factor of a transistor is 50. The input resistance when used in…MHT CET 2024 (9 May, Shift 1)
Given below are two statements: Statement I: In a typical transistor, all three regions…JEE Main 2023 (31 Jan, Shift 2)
For a common emitter configuration, if ' α ' and ' β ' have their usual meanings, the…MHT CET 2023 (14 May, Shift 1)
In the study of transistor as an amplifier if α = (IC)/(IE) = 0.98 and β = (IC)/(IB) =…MHT CET 2023 (11 May, Shift 2)
In an n-p-n common emitter (CE) transistor the collector current changes from 5 mA to 16…JEE Main 2023 (12 Apr, Shift 1)
In a transistor, in common emitter configuration, the ratio of power gain to voltage gain…MHT CET 2023 (9 May, Shift 2)
Which one of the operations of n-p-n transistor differs from that of p-n-p transistor?MHT CET 2023 (10 May, Shift 2)
The above figure shows the circuit symbol of a transistor. Select the correct statements…NEET 2023