Practice Test: Electronics Engineering (ECE)- 8


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65 Questions MCQ Test GATE ECE (Electronics) 2023 Mock Test Series | Practice Test: Electronics Engineering (ECE)- 8

Practice Test: Electronics Engineering (ECE)- 8 for Electronics and Communication Engineering (ECE) 2023 is part of GATE ECE (Electronics) 2023 Mock Test Series preparation. The Practice Test: Electronics Engineering (ECE)- 8 questions and answers have been prepared according to the Electronics and Communication Engineering (ECE) exam syllabus.The Practice Test: Electronics Engineering (ECE)- 8 MCQs are made for Electronics and Communication Engineering (ECE) 2023 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Practice Test: Electronics Engineering (ECE)- 8 below.
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Practice Test: Electronics Engineering (ECE)- 8 - Question 1

For the function f(x) = x3 ex, the minimum value occurred when x is equal to

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Practice Test: Electronics Engineering (ECE)- 8 - Question 2

The system of equations

ax + by + (aa + b)z = 0; bx + cy + (ba + c) z = 0; (aa + b)x + (ba+ c) y = 0.

has infinite number of non-triviaf solutions, then which of the following is true?

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Practice Test: Electronics Engineering (ECE)- 8 - Question 3

Find the residue of

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Practice Test: Electronics Engineering (ECE)- 8 - Question 4

Obtain the taylor series of the function in the region

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Practice Test: Electronics Engineering (ECE)- 8 - Question 5

The dependent current source shown in circuit

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*Answer can only contain numeric values
Practice Test: Electronics Engineering (ECE)- 8 - Question 6

The minimum number of equations required to analyze the circuit shown in the figure below is _____


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Practice Test: Electronics Engineering (ECE)- 8 - Question 7

The condition on R, L and C such that the step response y(t) in the figure has no oscillations, is

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*Answer can only contain numeric values
Practice Test: Electronics Engineering (ECE)- 8 - Question 8

VT = 1V&

IDS = 0.5 mA For the given figure ( NMOS circuit) the value of VDS is __________V


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Practice Test: Electronics Engineering (ECE)- 8 - Question 9

Current through a Silicon diode is 60 mA at a Forward bias of 0.95 V then the values of AC and DC Resistance of diode are?

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Practice Test: Electronics Engineering (ECE)- 8 - Question 10

In the given figure, the zener diode D1 has a reverse saturation current of 20 μA and a reverse saturation breakdown voltage of 100 V : The corresponding values for D2 are 50 μA & 30 V. The current in the circuit is given by

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Practice Test: Electronics Engineering (ECE)- 8 - Question 11

The range of the voltage gain adjustment in the following circuit is?

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Practice Test: Electronics Engineering (ECE)- 8 - Question 12

A transformer coupled class-A large signal amplifier has maximum and minimum values of collector- emitter voltage of 25V and 2.5V. The collector efficiency is?

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Practice Test: Electronics Engineering (ECE)- 8 - Question 13

For the circuit shown in the given figure the frequency of the output Q will be

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Practice Test: Electronics Engineering (ECE)- 8 - Question 14

The function ‘F’ implemented by the multiplexer chip shown in the figure is :

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Practice Test: Electronics Engineering (ECE)- 8 - Question 15

In a microprocessor the register which holds the address of the next instruction to be fetched is

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Practice Test: Electronics Engineering (ECE)- 8 - Question 16

The convolution product of

x[n] = {1.2, ,3,4.} 0 < n < 3
h(n) = (1, ,2 1, -1} 0 < n < 3 is?

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Practice Test: Electronics Engineering (ECE)- 8 - Question 17

If the step response of a causal, linear time invariant system is a(t) then the response of the system to a general input x(t) would be

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Practice Test: Electronics Engineering (ECE)- 8 - Question 18

For what value of ‘a’ does the system shown in the figure have a zero steady state error for a step input?

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Practice Test: Electronics Engineering (ECE)- 8 - Question 19

The measurement system shown in the figure uses three sub-systems in cascade, whose gains are specified asThe relative small errors associated with each respective sub-system are ei, e2 and e3. The error associated with the output is

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Practice Test: Electronics Engineering (ECE)- 8 - Question 20

The first two rows of Routh's tabulation of a third order equation are as follows.

This means there are

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Practice Test: Electronics Engineering (ECE)- 8 - Question 21

A broadcast radio transmitter radiates 10KW. When the modulation index is 0.6, the amount of carrier power, modulating wave power are?

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Practice Test: Electronics Engineering (ECE)- 8 - Question 22

If Pk is the probability of a message being received or transmitted, the amount of information lk associated in a bit is

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*Answer can only contain numeric values
Practice Test: Electronics Engineering (ECE)- 8 - Question 23

Consider limiter - Discriminator based FM demodulation with a sinusoidal modulation signal with maximum frequency deviation 60 KHz and base filter width 12kHz, the figure of merit is ____


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Practice Test: Electronics Engineering (ECE)- 8 - Question 24

A TEM wave impinges obliquely on a dielectric boundary with ∈r1 = 4 & ∈r2 = 3. The angle of incidence of total reflection is

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Practice Test: Electronics Engineering (ECE)- 8 - Question 25

Stoke's theorem relating the line integration to surface integration states that

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Practice Test: Electronics Engineering (ECE)- 8 - Question 26

The distribution function of a discrete random variable x is as follows:

The probability that X will take odd values is 

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Practice Test: Electronics Engineering (ECE)- 8 - Question 27

Using Runge-Kutta method find the approximate value of y, when x = 0.1 given that when x = 0; y = 1 

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Practice Test: Electronics Engineering (ECE)- 8 - Question 28

where S is the surface of the sphere x2 + y* + z2 = 16.

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Practice Test: Electronics Engineering (ECE)- 8 - Question 29

The particular integral of the different equation

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Practice Test: Electronics Engineering (ECE)- 8 - Question 30

Which one of the following statment is true of the circuit show in the given figure ?

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Practice Test: Electronics Engineering (ECE)- 8 - Question 31

The Thevenin's equivalent voltage Vm appearing between the terminals A and B of the network shown in figure is given by

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Practice Test: Electronics Engineering (ECE)- 8 - Question 32

In the case of the RLC circuit shown in the given figure, the voltage across the R, L and C would respectively be

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Practice Test: Electronics Engineering (ECE)- 8 - Question 33

The transconductance of a transistor as shown in figure is 10 mS. The value of the input resistance Rin is 

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Practice Test: Electronics Engineering (ECE)- 8 - Question 34

Calculate the resistivity of semiconductor material using given data

Mobility of free electrons and holes in pure Geremanium are 2400 cm2 / v - s, and 1450 cm2 / v - s, assume ni = 2.5 x 1013 cm-3 for Ge.

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Practice Test: Electronics Engineering (ECE)- 8 - Question 35

Match list - I (Name of the oscillator) with list - II (characteristics) and select the correct answer using the code gives below the lists


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Practice Test: Electronics Engineering (ECE)- 8 - Question 36

Select the correct output (Vo) wave - shape for a given input (V1) in the given network

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Practice Test: Electronics Engineering (ECE)- 8 - Question 37

Q. 

What is the function of diode (D) ?

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Practice Test: Electronics Engineering (ECE)- 8 - Question 38

P.    An 8-bit wide 4-word sequential memory will have
Q.    A 256 x 4 EPROM has
1.    8 fixed AND gates and 4 programmable OR gates
2.    Eight, 4 bit shift registers
3.    4 words of 32 bits each
4.    8 address pins and 4 data pins output

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Practice Test: Electronics Engineering (ECE)- 8 - Question 39

Dual scope integration type Analog-to-digital converter provides

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Practice Test: Electronics Engineering (ECE)- 8 - Question 40

x(t) is a positive rectangular pulse from t = -1 to t = +1 with unit height as shown in figure. The value of 

{where X(ω) is the Fourier transform of x(t)}

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Practice Test: Electronics Engineering (ECE)- 8 - Question 41

Given the finite length input x{n] and the corresponding finite length output y[nj of an LTI system as shown below, the impulse response h[n] of the system is

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Practice Test: Electronics Engineering (ECE)- 8 - Question 42

If a signal f(t) has energy 'E' the energy of the signal f (2t) is equal to

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Practice Test: Electronics Engineering (ECE)- 8 - Question 43

For the loop transfer function

The phase cross over frequency is

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Practice Test: Electronics Engineering (ECE)- 8 - Question 44

The Hilbert transform of cos wit + sinw2t  

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Practice Test: Electronics Engineering (ECE)- 8 - Question 45

The transmission band width of DSB-SC and SSB wave are (fra - Modulating signal BW)

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Practice Test: Electronics Engineering (ECE)- 8 - Question 46

Let E = (-200ax + 30ay + 70az) cos 10t V/m at point 'P which lies on the surface of a perfect conductor P (3, -4,1). If a material adjacent to the conductor has ∈r = 5, μf = 0, σ = 0, then surface charge density on the conductor surface at P

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Practice Test: Electronics Engineering (ECE)- 8 - Question 47

An electric field in free space is given as

E = 800 cos (10at - βy)az V/m,

find (p) β, (q) λ

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Practice Test: Electronics Engineering (ECE)- 8 - Question 48

The Antenna current of an AM transmitter is 9A, when only the carrier is sent. But it increases to 9.36A when the carrier is modulated by a single sine wave. Then the percentage of modulation is

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Practice Test: Electronics Engineering (ECE)- 8 - Question 49

The Antenna current, when the percent of modulation changes to 0.8 is

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Practice Test: Electronics Engineering (ECE)- 8 - Question 50

A system is described by the following state and output equations

where u(t) is the input and y(t) is the output.

Q. 

The system transfer function is

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Practice Test: Electronics Engineering (ECE)- 8 - Question 51

A system is described by the following state and output equations

where u(t) is the input and y(t) is the output.

Q. 

The state-transition matrix of the system is

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Practice Test: Electronics Engineering (ECE)- 8 - Question 52

The following Karnaugh map represents a function F.

Q. 

The minimized form of the function F is

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Practice Test: Electronics Engineering (ECE)- 8 - Question 53

The following Karnaugh map represents a function F.

Q. 

Which of the following circuits is a realization of the above function F?

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Practice Test: Electronics Engineering (ECE)- 8 - Question 54

The electric field intensity of a linearly polarized uniform plane wave propagating in the +z direction in sea water is E = ax cos (1Q7πt) V/m at z = 0. The constitutive parameters of sea water are ∈r, = 72, μr = 1 & σ ~ 4 S/m

Q. 

Attenuation constant, phase constant are

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Practice Test: Electronics Engineering (ECE)- 8 - Question 55

The electric field intensity of a linearly polarized uniform plane wave propagating in the +z direction in sea water is E = ax cos (1Q7πt) V/m at z = 0. The constitutive parameters of sea water are ∈r, = 72, μr = 1 & σ ~ 4 S/m

Q. 

Phase velocity & skin depth are

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Practice Test: Electronics Engineering (ECE)- 8 - Question 56

Directions for questions 56 and 57: Select the most appropriate word from the options given below to complete the following sentences.

Q. 

The rising popularity of jute items has prompted the need for small and mid-sized companies to__________ their processes to introduce better designs.

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Practice Test: Electronics Engineering (ECE)- 8 - Question 57

In the telecom industry_______ are multiplied by theconstant introduction of new offerings, not to mention new competition.

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Practice Test: Electronics Engineering (ECE)- 8 - Question 58

Directions for question 58: From the choices, pick the word that is closest in meaning to the head word.

BELIE

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Practice Test: Electronics Engineering (ECE)- 8 - Question 59

Directions for question 59: The question below consists of a pair of related words followed by four pairs of words. Select the pair that expresses the same relation as in the original pair

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Practice Test: Electronics Engineering (ECE)- 8 - Question 60

Suresh started from his house and travelled 5 kms towards the East. Then he turned to his left and travelled 10 kms. Again turned to his right and travelled 5 kms. Finally he traveled 11 kms to his right to reach the office. Approximately how far is his office located from his house and in which direction?

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 8 - Question 60



Practice Test: Electronics Engineering (ECE)- 8 - Question 61

A certain amount of money is divided among nine brothers. The second brother gets Rs. 2 more than twice the amount given to the first brother. The third brother gets Rs.3 more than thrice the amount given to the first brother, and so on till the ninth brother. If the ratio of the amount with the ninth brother to the amount with the first brother is 10 : 1, how much did the fifth brother get (in Rs.)?

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 8 - Question 61


Practice Test: Electronics Engineering (ECE)- 8 - Question 62

The sum of the squares of three terms in arithmetic progression is 365. The product of the first and the third terms is 120. Find the sum of the squares of the second term and the common difference.

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Practice Test: Electronics Engineering (ECE)- 8 - Question 63

In which of the following bases is 2454 a perfect cube?

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Practice Test: Electronics Engineering (ECE)- 8 - Question 64

In “Kaun-kaun" Island, there are two tribes - “Yes-type” and “No-type”. The people of “Yes-type" tribe always pose a question, the answer to which is "Yes" and the people of *No-type" always pose-a question the answer to which is “No”. H and M are two persons from that island. For which of the following questions of M, will the answer of H be unique?

l. “Am I of Yes-type”?

II. “Do both of us belong to Yes-type"?

III. “Do both of us belong to No-type”?

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Practice Test: Electronics Engineering (ECE)- 8 - Question 65

Directions for question 65: Four alternative summaries are given below each text. Choose the option that best captures the essence of the text.

There are many ways of looking at any thing or event or process. When your mind changes, new possibilities tend to arise. In fact, everything changes when you can see things on different levels simultaneously, when you can see fullness and connectedness as well as individuality and separateness. Your thinking expands in scope. This can be a profoundly liberating experience. It can take you beyond your limited preoccupations with yourself. It can put things in a larger perspective.

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