GATE EC 2023 Question Paper (05-Feb-2023) (Shift 2)

In a semiconductor, if the Fermi energy level lies in the conduction band, then the semiconductor is known as

For an intrinsic semiconductor at temperature 𝑇 = 0 𝐾, which of the following statement is true?

A series 𝑅𝐿𝐶 circuit has a quality factor 𝑄 of 1000 at a center frequency of 10⁶ rad/s. The possible values of 𝑅, 𝐿 and C are

For a MOS capacitor, V${}_{fb}$ and Vₜ are the flat-band voltage and the threshold voltage, respectively. The variation of the depletion width (W${}_{dep}$) for varying gate voltage (V${}_g$) is best represented by

Consider a narrow band signal, propagating in a lossless dielectric medium (𝜀${}_{\text{r}}$ = 4, 𝜇${}_{\text{r}}$ = 1), with phase velocity 𝑣${}_{\text{p}}$ and group velocity 𝑣${}_{\text{g}}$. Which of the following statement is true? (𝑐 is the velocity of light in vacuum.)