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Practice Test: Electronics Engineering (ECE)- 9 - Electronics and Communication Engineering (ECE) MCQ


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65 Questions MCQ Test GATE ECE (Electronics) 2024 Mock Test Series - Practice Test: Electronics Engineering (ECE)- 9

Practice Test: Electronics Engineering (ECE)- 9 for Electronics and Communication Engineering (ECE) 2024 is part of GATE ECE (Electronics) 2024 Mock Test Series preparation. The Practice Test: Electronics Engineering (ECE)- 9 questions and answers have been prepared according to the Electronics and Communication Engineering (ECE) exam syllabus.The Practice Test: Electronics Engineering (ECE)- 9 MCQs are made for Electronics and Communication Engineering (ECE) 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Practice Test: Electronics Engineering (ECE)- 9 below.
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Practice Test: Electronics Engineering (ECE)- 9 - Question 1

The inverse z - transform of 

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Practice Test: Electronics Engineering (ECE)- 9 - Question 2

Find the cube root of 11 using Newton iteration formula.

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 9 - Question 2


Practice Test: Electronics Engineering (ECE)- 9 - Question 3

The taylor series expansion of given by

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 9 - Question 3



Practice Test: Electronics Engineering (ECE)- 9 - Question 4

The fourier sine transform of 

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Practice Test: Electronics Engineering (ECE)- 9 - Question 5

For a series RLC circuit, which one of the following statement is NOT correct

Practice Test: Electronics Engineering (ECE)- 9 - Question 6

The circuit shown above is initially relaxed. At t = 0, the switch is closed. At t = 1 sec, the current i(t) is

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Practice Test: Electronics Engineering (ECE)- 9 - Question 7

The concentration of minority carriers in an extrinsic semiconductor under equilibrium is

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 9 - Question 7

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

An N-channei JFET has a pinch-off voltage of -4.5V and lDSS = 9mA. At what value of VGs will ID equal to 3 mA

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

The ratio of the mobility and the diffusion co-efficient in a semiconductor has units

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 9 - Question 9

Practice Test: Electronics Engineering (ECE)- 9 - Question 10

The input resistance Ri of the amplifier shown is

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 9 - Question 10

Practice Test: Electronics Engineering (ECE)- 9 - Question 11

The cascade amplifier configuration is

Practice Test: Electronics Engineering (ECE)- 9 - Question 12

The following circuit functions as

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 9 - Question 12


*Answer can only contain numeric values
Practice Test: Electronics Engineering (ECE)- 9 - Question 13

For the circuit shown in figure, if the clock frequency is 10KHz, the frequency of the waveform at the output Q is _____________KHz


Detailed Solution for Practice Test: Electronics Engineering (ECE)- 9 - Question 13

*Answer can only contain numeric values
Practice Test: Electronics Engineering (ECE)- 9 - Question 14

The Boolean function y = AB + CD is to be realized using only 2-input NAND gates. The minimum number of gates required is __________


Detailed Solution for Practice Test: Electronics Engineering (ECE)- 9 - Question 14

Practice Test: Electronics Engineering (ECE)- 9 - Question 15

The trigonometric fourier series for the wave form shown below contains

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Practice Test: Electronics Engineering (ECE)- 9 - Question 16

Let x(n) and y(n) represents the input and output of a discrete-time system, which one of the following is not a causal system.

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 9 - Question 16

Practice Test: Electronics Engineering (ECE)- 9 - Question 17

The average value (d.c) for the waveform shown below is

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Practice Test: Electronics Engineering (ECE)- 9 - Question 18

Consider an angle modulation signal x(t) = 4 [2π x 10s t + 3 sin(6000π t) + 4 cos(8000πt)]v.

The average power of x(t) is

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 9 - Question 18

Practice Test: Electronics Engineering (ECE)- 9 - Question 19

For a message signal m(t) = cos(2πfmt) and carrier of frequency fC, which of the following represents a single side band (SSB) signal

Practice Test: Electronics Engineering (ECE)- 9 - Question 20

The capacitor of Gaussian channel of band width 4KHz, with noise PSD 10-9 wHz. When the signal Energy is 0.1. J.

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 9 - Question 20


Practice Test: Electronics Engineering (ECE)- 9 - Question 21

The transfer function of a system is given by  The system is

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Practice Test: Electronics Engineering (ECE)- 9 - Question 22

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Practice Test: Electronics Engineering (ECE)- 9 - Question 23

A 555 astable oscillator with R1 = 40 kΩ, R2 = 120 kΩ and C = 4.0 μF will oscillate at

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 9 - Question 23

Practice Test: Electronics Engineering (ECE)- 9 - Question 24

The magnetic field intensity vector of a plane wave is given by   = 10sin (5000t + 0.004x + 30)  where denotes the unit vector in y direction. The wave is propagated with a phase velocity of

Practice Test: Electronics Engineering (ECE)- 9 - Question 25

In the wave equationwhich term is responsible for attenuation of the wave?

Practice Test: Electronics Engineering (ECE)- 9 - Question 26

Match each differential equation in Group - I to its family of solution curves from Group - n.

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Practice Test: Electronics Engineering (ECE)- 9 - Question 27

dr where 'c' is curve y = 4x2 in xy plane from (0, 0) to (1,4).

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Practice Test: Electronics Engineering (ECE)- 9 - Question 28

For the matrix one of the eigen values of the matrix P is 3, which of the following is

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Practice Test: Electronics Engineering (ECE)- 9 - Question 29

Consider the two independent random vanabies X and Y with identical distnbutions. The variables X and Y take the values 0, 1, 2. 3. 4 with respective probabilities  What is the conditional probability P(X + Y = 4/X - Y = 0)?

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Practice Test: Electronics Engineering (ECE)- 9 - Question 30

The driving point impedance of the foilowing network is given by The component values are

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Practice Test: Electronics Engineering (ECE)- 9 - Question 31

The thevemn equivalent impedance Zth between the nodes P and Q is the following circuit is

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Practice Test: Electronics Engineering (ECE)- 9 - Question 32

The  h-parameter matrix of the two-part network shown in Fig. is

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Practice Test: Electronics Engineering (ECE)- 9 - Question 33

For the transistor shown above, Rc = 10 K, hfe = 50, hoe 25 x 10-6 , all capacitors are short circuited at the signal frequency, the current gain is given by

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 9 - Question 33

Practice Test: Electronics Engineering (ECE)- 9 - Question 34

The circuit using a BJT with β = 50 and VBE = 0,7 V is shown is figure. The base current lB and collector VC are respectively.

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Practice Test: Electronics Engineering (ECE)- 9 - Question 35

For the amplifier shown above, given rd = 20 kΩ, lDss = 10 mA, Vp = -8 V Zi and Zo of the circuit are respectively.

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Practice Test: Electronics Engineering (ECE)- 9 - Question 36

The above amplifier is a

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Practice Test: Electronics Engineering (ECE)- 9 - Question 37

The output of the above amplifier is

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Practice Test: Electronics Engineering (ECE)- 9 - Question 38

For the circuit shown in figure, the Boolean expression for the output Y interms of inputs P, Q, R and S is

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Practice Test: Electronics Engineering (ECE)- 9 - Question 39

An X-Y flip flop whose characteristic table is given below is to be implemented using a J-K flip flop

This can be done by making _

Practice Test: Electronics Engineering (ECE)- 9 - Question 40

The following program is written for an 8085 microprocessor to add two bytes, located at memory addresses 1FFE and 1FFF

LXIH, 1FFE
MOV B, M
INR L
MOV A, M
ADD B
INR L
MOV M, A
XORA

On completion of the execution of the program the result of addition is found.

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 9 - Question 40

Practice Test: Electronics Engineering (ECE)- 9 - Question 41

Consider the rectangular pulse shown in figure, its fourier transform is

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Practice Test: Electronics Engineering (ECE)- 9 - Question 42

The R.O.C of the Z-transform of the discrete time sequence 

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 9 - Question 42


Practice Test: Electronics Engineering (ECE)- 9 - Question 43

Consider a continuous time signal x(t)  

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Practice Test: Electronics Engineering (ECE)- 9 - Question 44

A state model of a system is characterized by the differential equation  Its transfer function will be

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Practice Test: Electronics Engineering (ECE)- 9 - Question 45

A unity feedback system has an open loop transfer Its damping ratio and peak over shoot will be

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 9 - Question 45


*Answer can only contain numeric values
Practice Test: Electronics Engineering (ECE)- 9 - Question 46

The block diagram shown in figure, given a unity feed back closed loop control system. The steady state error in the response of the above system to unit step input is_________________________ %


Detailed Solution for Practice Test: Electronics Engineering (ECE)- 9 - Question 46


Practice Test: Electronics Engineering (ECE)- 9 - Question 47

A uniform plane wave has a wavelength of 2 cm in free space and 1 cm in a perfect dielectric. What is the relative permittivity of the dielectric?

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Practice Test: Electronics Engineering (ECE)- 9 - Question 48

Q.

Consider an n-type silicon bar of length 1 cm with electron concentration of 1016, the charge of electron is 1.6 x 10-19 C and mobility is 3800cm2/V-s at 300 K. The conductivity of silicon is

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Practice Test: Electronics Engineering (ECE)- 9 - Question 49

If a potential of 5V is applied across the bar. the current density is

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Practice Test: Electronics Engineering (ECE)- 9 - Question 50

A carrier is phase modulated (PM) with frequency deviation of 10 KHz.by a single tone frequency of 1 KHz.lf the single tone frequency is increased to 2 KHz, assuming that the phase deviation remains unchanged

Q. 

The bandwidth of the PM signal is

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 9 - Question 50


Practice Test: Electronics Engineering (ECE)- 9 - Question 51

A carrier is phase modulated (PM) with frequency deviation of 10 KHz.by a single tone frequency of 1 KHz.lf the single tone frequency is increased to 2 KHz, assuming that the phase deviation remains unchanged

Q. 

With single tone frequency fm is 1 KHz, what is the max frequency deviation.

Practice Test: Electronics Engineering (ECE)- 9 - Question 52

A plane wave of frequency 1 MHz is traveling in a large block of copper (σ = 5.8 x 107, εr ≈ 1, μr ≈ 1).

Q.

The phase constant is

Practice Test: Electronics Engineering (ECE)- 9 - Question 53

A plane wave of frequency 1 MHz is traveling in a large block of copper (σ = 5.8 x 107, εr ≈ 1, μr ≈ 1).

Q. 

The wave speed in copper at this frequency is

Practice Test: Electronics Engineering (ECE)- 9 - Question 54

The unmodulated carrier power of an AM wave is 8 KW and rises to 10 KW after modulation. The modulation index is

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Practice Test: Electronics Engineering (ECE)- 9 - Question 55

If another sine wave is modulated with a modulation index of 0.5 with the above system, the total power is

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Practice Test: Electronics Engineering (ECE)- 9 - Question 56

Directions for questions 56 and 57: Fill in the blanks with the most appropriate word from the choices.

According to educationist Sir Ken Robinson, in thecoming years, _____ in education would be asimportant as literacy.

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Practice Test: Electronics Engineering (ECE)- 9 - Question 57

With the economy back on track, manufacturers andretailers are set to cash in on the festive  ____ this month.

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Practice Test: Electronics Engineering (ECE)- 9 - Question 58

Directions for question 58: Which of the options is the closest in meaning to the word given in capitals?

ODIUM

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 9 - Question 58

Practice Test: Electronics Engineering (ECE)- 9 - 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 share a similar relationship as the original pair.

PATIENT: HOSPITAL

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 9 - Question 59

Practice Test: Electronics Engineering (ECE)- 9 - Question 60

In a queue ten persons are standing ahead of Bhonsle, five persons are standing behind Mane. Six persons are standing between Bhonsle and Mane. What is the position of Mane from the front of the queue?

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 9 - Question 60


Practice Test: Electronics Engineering (ECE)- 9 - Question 61

Machines P, Q and R can do a piece of work in 20, 30 and 60 days respectively. Machines P, Q and R start the work together. Machine P goes out of order after 5 days. After 3 more days machines Q and R also go out of order. Machine P got repaired by then and it completes the remaining work. What portion of the total work did machine P do?

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 9 - Question 61



Practice Test: Electronics Engineering (ECE)- 9 - Question 62

P and Q are two points, 10 km apart. Anand started from P towards Q and at the same time, Ashok started from Q towards P. They crossed each other after 1 hour. After that, Anand reduced his speed by 2 kmph and Ashok increased his speed by 2 kmph. They reached their destinations simultaneously. Find Anand's initial speed (in kmph).

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 9 - Question 62



Practice Test: Electronics Engineering (ECE)- 9 - Question 63

A vessel has 10 ml of a solution of milk and water containing 20% milk, x ml of milk was added to the vessel to reverse this ratio, y ml of water was then added to the vessel to reverse the ratio once again. Find x + y.

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 9 - Question 63



Practice Test: Electronics Engineering (ECE)- 9 - Question 64

Four dishes - Fried rice, Daal,- Panneer and Gulabjamun are placed on a table in a row. One among these dishes is Tasty and healthy. We know the following information about them.

(i) Neither of the two dishes adjacent to paneer is healthy.
(ii) Gulabjamun is at the end of the row.
(iii) Daal is adjacent to only one dish,

which is not tasty.Which dish is healthy and tasty?

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 9 - Question 64




Practice Test: Electronics Engineering (ECE)- 9 - Question 65

Directions for question 65: From the options pick the best summary of the original passage.

Inspite of data indicating that the US economy has been modestly rebounding, there is a growing fear that it is simply a lull on the way to worse times ahead. That fear, rooted in history, is the product of both legitimate concern and ugly political opportunism. For now, the sea of data is sending mixed signals: on the negative side employment is weak and showing few signs of strengthening, consumers are spending at a reduced pace, states are facing severe budget problems and credit remains tight. On the plus side, corporate earnings are soaring, job loss has slowed, production and productivity are up, the financial system has stabilized, and GDP has been expanding for almost a year.

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 9 - Question 65



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