GATE 2021: Toppers Quiz-16 (App update required to attempt this test)

A tunnel diode is a P-N junction in which

For the circuit shown  = 0.7 V and β is very high. Then the value of Vo is

For the signal shown below the maximum value of the output signal will be _____, if it is applied to the matched filter.

The current in the RL-circuit shown below is i(t) =

The value of the inductor (rounded off to two decimal places) is ……. H.

An anlog signal of bandwidth 20kHz is sampled at a rate of 40kHz and qunatized into 16 levels .the resultant digital signal is transmitted using M-ary PSK with raised cosine pulse (roll off factor 0.3) if the channel with 110kHz bandwidth is available to tansmit the data ,then smallest acceptable value of M is____

Let μ=10^-5H/m, ϵ = 4 ×10^-9F/m, σ =0 and ρ_V = 0. Find K so that D = 6a_x – 2a_y + 2za_z nC/m² and H = kxa_x – 10ya_y - 25 za_z A/m satisfies Maxwell’s equations.

The state variable representation of a plant is given by:

X = AX + BU

Y = CX

Where X is the state, U is the input and Y is the output Assuming zero initial conditions the impulse response of the plant is given by:

The minimum number of d flip-flops needed to design, a mod-300 is ____

The Junction capacitance of diffused Junction (with applied voltage = V_B) is proportional to

A Si p-n junction diode of length (L) has doping profile shown below

If the applied reverse bias voltage V_R = 10 V, the space charge region width is ______ μm. (Assume n_i = 1.5 × 10¹⁰/cm³. V_T = 0.0259 V)

For the circuit in Figure find V₀(t) for t > 0

Determine the time necessary for the capacitor voltage to decay capacitor voltage to decay to are one third of its value at t = 0

Twenty-four voice signals are sampled uniformly and then time-division multiplexed. The sampling operation uses flat top samples with 1 duration .The multiplexing operation includes provision for synchronization by adding an extra pulse of appropriate amplitude and 1 duration. The highest frequency component of each voice signal is 3.4 kHz. If sampling rate is 8 kHz, then the spacing between successive pulses of the multiplexed signal is ___________()

An air filled rectangular waveguide of dimensions a = 4 cm, b = 2 cm transports energy in the dominant mode at a rate of 2 mw. If the frequency of operation is 10 GHz. Determine the peak value of electric field in the wave guide?

A sequential circuit with asynchronous clear inputs is shown below with clock frequency . Let initially, then the frequency of the waveform at is _____ KHz.

Given an uniform electric field in a medium with for ,is incident onto a medium with =4 for Z<0.
The electric field for Z<0 is given by

If the Hall constant (R_H) of a p–type semiconductor sample is 6.4 × 10³ cm³ /C, then the thermal equilibrium concentration of holes in that sample is _______ × 10¹⁴ cm^–3. (Assume charge of electron = 1.6 × 10^–19 C)

Consider the circuit shown in the figure. Input voltage varies from 20 V to 30 V and the load current varies from 0 to 100 mA.

Find R_s(min) such that Zener is always ON and at least a knee current of 10 mA flows through diode and Calculate the power rating of the zener.