ESE Prelims 2022 Achievers Quiz 9

An enhancement type NMOS transistor has the following parameters

(Without body effect) = 0.8 V; k =

2.8 V, , 1V

The region of operation of the transistor is

The cut-off wavelength for an optical fibre with 5 μm core diameter and core cladding indices of refraction 1.484 and 1.402 is nearly

Statement 1: An 8-bit PCM system perform better than a 6-bit PCM system.

Statement 2: 8-bit PCM system requires more channel bandwidth than 6-bit PCM system.

The open collector of the gates are connected together as shown. The expression for Y will be

The phase velocity of a particular mode in an air-filled rectangular wave guide is 3.5 × 10⁸ m/s. The group velocity of the same mode is,

A closed loop system is shown, when will the system be very much under damped?

A continuous time signal x(t) has Fourier transform

X(jω) =

Fourier transform of the signal

y(t) = x(1 – t) + x(–1 – t) is

Given circuit work as

If V(t)=5+2t and i_L(0^-)=0A, then i(t) at t=1sec is

The free electron density in a conductor is (1/1.6) x 10²² cm^-3 The electron mobility is 10 cm²/Vs. What is the value of its resistivity?