COMEDK 2023 Morning Shift | Semiconductor Devices and Logic Gates Question 11 | Physics

A transistor is connected in CE configuration. The collector supply is $$10 \mathrm{~V}$$ and the voltage drop across a resistor of $$1000 \Omega$$ in the collector circuit is $$0.5 \mathrm{~V}$$. If the current gain factor is 0.96 , then the base current is

$$25_6 \mu \mathrm{A}$$

$$20.8 \mu \mathrm{A}$$

$$22.5 \mu \mathrm{A}$$

$$15 \mu \mathrm{A}$$

COMEDK 2023 Morning Shift

MCQ (Single Correct Answer)

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Which logic gate is represented by the following combination logic gates?

COMEDK 2023 Morning Shift Physics - Semiconductor Devices and Logic Gates Question 16 English

NAND

AND

NOR

COMEDK 2023 Morning Shift

MCQ (Single Correct Answer)

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An LED is constructed from a $$p$$-$$n$$ junction diode using GaAsP. The energy gap is $$1.9 \mathrm{~eV}$$. The wavelength of the light emitted will be equal to

$$10.4 \times 10^{-26} \mathrm{~m}$$

$$654 \mathrm{~nm}$$

$$654 ~\mathop A\limits^o$$

$$654 \times 10^{-11} \mathrm{~m}$$

COMEDK 2023 Evening Shift

MCQ (Single Correct Answer)

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The energy gap between valance band and the conduction band for a given material is $$6 \mathrm{~eV}$$, then the material is :

A semiconductor

A metal

An insulator

A superconductor

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