Electronics and Communication Engineering (ECE) Exam > Electronics and Communication Engineering (ECE) Tests > Practice Test: Electronics Engineering (ECE)- 15 - Electronics and Communication Engineering (ECE) MCQ
Download as PDF

Test Description

Practice Test: Electronics Engineering (ECE)- 15 for Electronics and Communication Engineering (ECE) 2024 is part of Electronics and Communication Engineering (ECE) preparation. The Practice Test: Electronics Engineering (ECE)- 15 questions and answers have been prepared
according to the Electronics and Communication Engineering (ECE) exam syllabus.The Practice Test: Electronics Engineering (ECE)- 15 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)- 15 below.

Solutions of Practice Test: Electronics Engineering (ECE)- 15 questions in English are available as part of our course for Electronics and Communication Engineering (ECE) & Practice Test: Electronics Engineering (ECE)- 15 solutions in
Hindi for Electronics and Communication Engineering (ECE) course.
Download more important topics, notes, lectures and mock test series for Electronics and Communication Engineering (ECE) Exam by signing up for free. Attempt Practice Test: Electronics Engineering (ECE)- 15 | 65 questions in 180 minutes | Mock test for Electronics and Communication Engineering (ECE) preparation | Free important questions MCQ to study for Electronics and Communication Engineering (ECE) Exam | Download free PDF with solutions

1 Crore+ students have signed up on EduRev. Have you? Download the App |

Practice Test: Electronics Engineering (ECE)- 15 - Question 1

There are two lines made by joining points A, B,C. B lies between the line joining A and C. Is the distance between the A and C passes through the B more then 7 Km.

I. The distance between A and B is 6 Km

II. Distance between B to C is 7 Km long,

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 15 - Question 1

Practice Test: Electronics Engineering (ECE)- 15 - Question 2

Direction: In the given question, a word/phrase is given followed by three statements; I, II and III. Choose the pair of sentences which can be combined using the given word/ phrase when used at the beginning of the new sentence.

And

I: When Lionel Messi, Ronaldo and Neymar kick and dribble the football, they don’t remain confined to Argentina, Portugal or Brazil, respectively.

II: Let the entire world realise that through sports, especially football, we all can cement our bonds, wash away our bitterness and prejudices.

III: Live with a greater sense of closeness and joy with each other.

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 15 - Question 2

Practice Test: Electronics Engineering (ECE)- 15 - Question 3

Which of the following is the MOST SIMILAR in meaning to Accreditation?

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 15 - Question 3

Practice Test: Electronics Engineering (ECE)- 15 - Question 4

In how many ways can you place 2 white bishops on an empty chess board?

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 15 - Question 4

Practice Test: Electronics Engineering (ECE)- 15 - Question 5

Direction: In the question below are given statements followed by some conclusions. You have to take the given statements to be true even if they seem to be at variance with commonly known facts. Read all the conclusions and then decide which of the given conclusions logically follows from the given statements disregarding commonly known facts.

**Statement:**

No physics is maths.

Some chemistry is maths.

All sciences are chemistry.

**Conclusion:**

I. No science is physics.

II. Some physics are science.

III. Some physics are chemistry.

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 15 - Question 5

Practice Test: Electronics Engineering (ECE)- 15 - Question 6

Direction: Read the information carefully and give the answer of the following questions-

(This pie chart shows the percentage of students appear in six different exams in 2016)

(This bar graph shows the percentage of failed students which appear in these six different exams in 2016)

If in 2016, total number of failed students in exam F was 4080, then how many passed students appears in the exam B?

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 15 - Question 6

Practice Test: Electronics Engineering (ECE)- 15 - Question 7

Direction: Two sentences with two blanks in each, followed by five alternatives with two words in each, are given. Choose that option as the answer which can fill both the blanks of both the sentences.

i. A sinking feeling of panic ________ over them and a temporary paralyzing fear engulfed them ________.

ii. Being a cleanliness freak, she ________ the floor and went down to the market only after the house was _________ clean.

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 15 - Question 7

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

Direction: Five statements are given below, labelled 1, 2, 3, 4 and 5 which are supposed to be in a logical order. A statement labelled P is given thereafter. P can replace one of the five statements such that the four statements along with P would make a coherent paragraph. You have to identify which statement should P replace and then the find out the correct sequence from the options. If the five options are in logical order and form a coherent paragraph/passage, choose the fifth option “12345”.

1) The future of Germany’s coalition government is hanging in the balance after the country’s interior minister reportedly announced his intention to resign over a migration showdown with Angela Merkel.

2) Horst Seehofer, who is also leader of the Christian Social Union, on Sunday night offered to step down from his ministerial role and party leadership in a closed-door meeting in which he and fellow CSU leaders had debated the merits of the migration deal Merkel hammered out with fellow European Union leaders in Brussels.

3) But with CSU hardliners believed to have tried to talk the combative interior minister into staying, a press conference was postponed until Monday, with Seehofer seeking to go back to Merkel in search of a final compromise.

4) At a 2am media conference, Seehofer said he had agreed to meet again with Merkel’s party before he made his decision final.

5) “We’ll have more talks today with the CDU in Berlin with the hope that we can come to an agreement,” Seehofer said.

P. Merkel said on Sunday she wanted the CDU and its Bavarian allies to continue working together.

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

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

4 identical solid spheres are melted and re-formed into a solid hemisphere. Then, the ratio of the curved surface area of the hemisphere to half of the surface area of a single sphere is -

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

Practice Test: Electronics Engineering (ECE)- 15 - Question 10

A study of people who reduced the calories they consumed has found the strongest evidence yet that such restrictions slow down metabolism, raising hopes that a low calories lifestyle or treatments stimulating biological effects of restricted eating, could prolong health in old age. The report provides the most robust evidence to date that everything we have learnt in other animals can be applied to humans.

Which of the following argument will prove that the above conclusion is flawed?

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 15 - Question 10

Practice Test: Electronics Engineering (ECE)- 15 - Question 11

The value of k such that the system of equation

x + ky + z = 0, x + 3y + kz = 0, 2x + y + z = 0 has non-trivial solution.

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 15 - Question 11

*Answer can only contain numeric values

Practice Test: Electronics Engineering (ECE)- 15 - Question 12

The frequency at the output of the following cascaded circuit is …………. Hz

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 15 - Question 12

*Answer can only contain numeric values

Practice Test: Electronics Engineering (ECE)- 15 - Question 13

A PCM (Pulse Code Modulation) system uses 8-bit encoder and uniform quantization. What is the maximum bandwidth(in MHz) of the low-pass input message signal for which the bit rate of the system is 20Mbps?

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 15 - Question 13

*Answer can only contain numeric values

Practice Test: Electronics Engineering (ECE)- 15 - Question 14

A super heterodyne receiver having RF amplifier is tuned to 1200 kHz, the intermediate frequency is 450 kHz. The quality factor of the tuned circuit at RF amplifier and at the mixer are same and is equal to 65. The image rejection ratio is

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 15 - Question 14

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

Simplify the given Boolean expression

A+AB'+AB'C'+AB'C'D'+AB'C'D'E'+…………………

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 15 - Question 15

Practice Test: Electronics Engineering (ECE)- 15 - Question 16

If the skin depth is 60 µm at 3 MHz in a certain conducting medium then what will be the skin depth if the frequency is changed to 27 MHz?

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 15 - Question 16

Practice Test: Electronics Engineering (ECE)- 15 - Question 17

Find the Standing Wave Ratio of a transmission line of characteristic impedance 80Ω is connected to a load of 100Ω.

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 15 - Question 17

*Answer can only contain numeric values

Practice Test: Electronics Engineering (ECE)- 15 - Question 18

Consider the following continuous time signal x(t)

If C_{k} is the complex Fourier series coefficient of signal x(t). Then the value of |C_{2}| will be

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 15 - Question 18

*Answer can only contain numeric values

Practice Test: Electronics Engineering (ECE)- 15 - Question 19

The circuit shown in the figure below is in steady state when switch is closed at t = 0, then the value of

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 15 - Question 19

Practice Test: Electronics Engineering (ECE)- 15 - Question 20

Characteristic equation of a system having unity feedback is

(s + 1)(s - 2)+ k(s - 3)(s + 4). The system is then which of the following?

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 15 - Question 20

Practice Test: Electronics Engineering (ECE)- 15 - Question 21

Consider a spatial curve in 3D space given on parameters form by

X = t

Y = 1

Z = 3t/π in 0 ≤ t ≤ π. The length of the curve is

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 15 - Question 21

Practice Test: Electronics Engineering (ECE)- 15 - Question 22

The modified work function of N-channel MOSFET is -0.8V. The effective positive charge at the Semiconductor oxide layer interface is 9.8 x 10^{-5} C/m^{2} and the oxide capacitance is 300 μF/ m^{2}, then calculate the flat band voltage.

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 15 - Question 22

*Answer can only contain numeric values

Practice Test: Electronics Engineering (ECE)- 15 - Question 23

In the voltage controller circuit shown in the figure (assume that op-amp is ideal). The BJT has V_{BE} = 0.7V & β is very large and V_{2} = 4.7V. For a regulated output of 9.4V, the value of R (in kΩ) is

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 15 - Question 23

*Answer can only contain numeric values

Practice Test: Electronics Engineering (ECE)- 15 - Question 24

Consider a lossless antenna with a directive gain of +6db. If 1mW of power is fed to it the total power radiated by the antenna will be

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 15 - Question 24

*Answer can only contain numeric values

Practice Test: Electronics Engineering (ECE)- 15 - Question 25

The output voltage V_{o}(in mV) of the circuit shown in figure

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 15 - Question 25

Practice Test: Electronics Engineering (ECE)- 15 - Question 26

For a given P^{+} - N Si junction diode with N_{D} = 10^{15} cm^{-3} and _{ni} = 10^{10} cm^{-3} and e = 8.85 × 10^{-14} C^{2}/N-cm^{3}. Find the electric field at the midpoint of the depletion region on the n-side. (let reverse bias voltage = 100V)

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 15 - Question 26

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 15 - Question 27

Practice Test: Electronics Engineering (ECE)- 15 - Question 28

For the voltage amplifier circuit shown in the figure, A_{v} is very high. Also R_{S} = 1mΩ, R_{L} = 1kΩ R_{1} = 1 kΩ and R_{2} = 1mΩ

Then what is the value of |V_{o}/V_{s}| = ?

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 15 - Question 28

Practice Test: Electronics Engineering (ECE)- 15 - Question 29

The value of d/dt x(t) at t = 1.5 for x(t) = u(t) + r(t) - 2r(t - 1) + r(t - 2) - u(t - 2) is

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 15 - Question 29

Practice Test: Electronics Engineering (ECE)- 15 - Question 30

Consider an angle modulated signal X(t) = 10.cos [10^{8} πt + Sin 2π 10^{3}t]

The maximum frequency deviation is ________kHz?

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 15 - Question 30

*Answer can only contain numeric values

Practice Test: Electronics Engineering (ECE)- 15 - Question 31

With G(s) = k/(s+3)^{5}. Find kmax for stability.

k =

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 15 - Question 31

Practice Test: Electronics Engineering (ECE)- 15 - Question 32

For the circuit using op-amp -741 with unity gain frequency of 1 MHz. The overall 3 -dB frequency is ____?

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 15 - Question 32

Practice Test: Electronics Engineering (ECE)- 15 - Question 33

Given that D = z⋅ρ cos^{2}ϕa_{2}c/m^{2}, Calculate the charge density at (1, π/4, 3) and then the total charge enclosed by the cylinder of radius 1m with −2 ≤ z ≤ 2m is?

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 15 - Question 33

*Answer can only contain numeric values

Practice Test: Electronics Engineering (ECE)- 15 - Question 34

Let c be triangle path connecting the points (0, 0), (4, 4) and (0, 4) in the counter clock wise direction then,

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 15 - Question 34

*Answer can only contain numeric values

Practice Test: Electronics Engineering (ECE)- 15 - Question 35

For the transfer function

The resonance peak magnitude is

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 15 - Question 35

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 15 - Question 36

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 15 - Question 37

Practice Test: Electronics Engineering (ECE)- 15 - Question 38

For the lattice circuit shown in figure, Z_{a} = 20Ω and Z_{b} = 10Ω. The value of open circuit impedance parameter Z_{12 i}s ____ Ω ?

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 15 - Question 38

*Answer can only contain numeric values

Practice Test: Electronics Engineering (ECE)- 15 - Question 39

For given circuit, with R = 1 kΩ and C = 1 μF and also R_{1} = R_{2}. The output frequency is ____ kHz. (Assume ideal opamp)

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 15 - Question 39

*Answer can only contain numeric values

Practice Test: Electronics Engineering (ECE)- 15 - Question 40

A photo-detector circuit shown in figure. The photo-diode has an active area of 10^{+2} cm^{2} and sensitivity of 0.55 A/W. When light of intensity 10mW/cm^{2} falls on the photo-diode, the output voltage V_{O} is ___ volt.

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 15 - Question 40

Practice Test: Electronics Engineering (ECE)- 15 - Question 41

Study the standard negative feedback configuration with G(s) Find the number of clockwise encirclements of (-1, 0) in the Nyquist of the Loop transfer function G(s) H(s) will be

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 15 - Question 41

Practice Test: Electronics Engineering (ECE)- 15 - Question 42

A second order process having transfer function is cascaded with a standard PD controller in unity feedback configuration. If the closed loop system have velocity error constant K_{V} = 300 and damping ratio ζ = 0.6, then the value of controller gain (k_{P}) is

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 15 - Question 42

Practice Test: Electronics Engineering (ECE)- 15 - Question 43

Which of the following signal is obtained on integrating ramp signal?

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 15 - Question 43

Practice Test: Electronics Engineering (ECE)- 15 - Question 44

A unity feedback control system has an open loop transfer function.

The value of system gain K for which all the roots are equal is _______.

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 15 - Question 44

*Answer can only contain numeric values

Practice Test: Electronics Engineering (ECE)- 15 - Question 45

For a Si, one sided abrupt junction with N_{A} = 2 × 10^{19}/cm^{3 }& N_{D }= 8 × 10^{15}/cm^{3 }& n_{i} = 9.65 × 10^{9}/cm^{3} The junction capacitance at zero bias is ______(in mF/cm^{2}). Given,ϵ_{r} = 11.7

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 15 - Question 45

*Answer can only contain numeric values

Practice Test: Electronics Engineering (ECE)- 15 - Question 46

In an n-channel MOSFET, drain is shorted to the gate so that V_{GS} = V_{DS}. And

V_{T} = 1V. If the drain current I_{D} is 1 mA for V_{GS} = 2V then for V_{GS} = 3V, I_{D} (in mA) is

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 15 - Question 46

Practice Test: Electronics Engineering (ECE)- 15 - Question 47

A semiconductor of thickness 0.5μm is illuminated with monochromatic light of hϑ = 2eV, and the absorption coefficient of semiconductor α = −5 × 10^{−4}cm^{−1}. If the incident power is 10mW (Assume semiconductor has perfect quantum efficiency) then number of photons given from recombination events per second is photons/sec

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 15 - Question 47

Practice Test: Electronics Engineering (ECE)- 15 - Question 48

In a 8085 microprocessor, the register which holds address of the next instruction to be fetched is

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 15 - Question 48

Practice Test: Electronics Engineering (ECE)- 15 - Question 49

Calculate Zth across the terminals A and B:

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 15 - Question 49

Practice Test: Electronics Engineering (ECE)- 15 - Question 50

The response of a system at zero initial conditions and non-zero input is called ________.

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 15 - Question 50

Practice Test: Electronics Engineering (ECE)- 15 - Question 51

Following the state diagram shown clocked sequential circuit:

How many states the sequential circuit has?

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 15 - Question 51

Practice Test: Electronics Engineering (ECE)- 15 - Question 52

Consider the following circuit. A = a_{2}a_{1}a_{0} and B = b_{2}b_{1}b_{0} are three bit binary numbers input to the circuit. The output is Z = z_{3}z_{2}z_{1}z_{0}. R0, R1 and R2 are registers with loading clock shown. The registers are loaded with their input data with the falling edge of a clock pulse (signal CLOCK shown) and appears as shown. The bits of input number A, B and the full adders are as shown in the circuit. Assume Clock period is greater than the settling time of all circuits.

For 8 clocks pulses on the CLOCK terminal and the inputs A, B as shown, obtain the output Z (sequence of 4-bit values of Z). Assume initial contents of R0, R1 and R2 as all zeros.

A = 110 011 111 101 000 000 000 000

B = 101 101 011 110 000 000 000 000

Clock No 1 2 3 4 5 6 7 8

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 15 - Question 52

Practice Test: Electronics Engineering (ECE)- 15 - Question 53

Find by double integration the volume of the solid generated by revolving the ellipse about the x-axis.

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 15 - Question 53

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 15 - Question 54

Practice Test: Electronics Engineering (ECE)- 15 - Question 55

Consider the following differential equation dy/dx = -x+1

If y (2) = 1 then the value of y (2.2) using Runge- Kutta third order method is

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 15 - Question 55

Practice Test: Electronics Engineering (ECE)- 15 - Question 56

The value of integral c∮(yzdx + zxdy + xydz) where c is the curve x^{2} + y^{2} = 1 and z = y^{2} is

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 15 - Question 56

Practice Test: Electronics Engineering (ECE)- 15 - Question 57

Consider the two port network shown below

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 15 - Question 57

*Answer can only contain numeric values

Practice Test: Electronics Engineering (ECE)- 15 - Question 58

Consider the 2 port circuit given below

Hybrid parameter h_{12} for the circuit is _____.

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 15 - Question 58

Practice Test: Electronics Engineering (ECE)- 15 - Question 59

For the opamp biasing shown in figure, it was found experimentally even at zero bias the current flowing into positive terminal is 15nA and current flowing into negative terminal is 10nA. If the output voltage of op-amp is 8mV. The value of feedback resistance Rf is__________.

Assume (R_{f} ≫ R). R = 0.5 kΩ

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 15 - Question 59

Practice Test: Electronics Engineering (ECE)- 15 - Question 60

The input-output relationship of a causal stable LTI system is given as y[n] = αy[n - 1] + βx[n].

If the impulse response h[n] of this system satisfies the condition the relationship between α cond β is

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 15 - Question 60

Practice Test: Electronics Engineering (ECE)- 15 - Question 61

The Fourier transform of continuous time signal X(t) = 3cos(10t) + 4sin(10t) is

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 15 - Question 61

Practice Test: Electronics Engineering (ECE)- 15 - Question 62

If the Nyquist rate for x(t) is ω_{0}, what will be the Nyquist rate for x(3t) and x(t/3)?

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 15 - Question 62

Practice Test: Electronics Engineering (ECE)- 15 - Question 63

Find the systems response to the input x[n] = u[n]| if the unit impulse response h[n] of a DT LTI system is

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 15 - Question 63

Practice Test: Electronics Engineering (ECE)- 15 - Question 64

Consider the speed control system of figure below where in the inner loop corresponds to motor back emf. The controller is an integrator with gain K observe that the load is inertia only.

Determine the value of k for which steady state error to unit ramp input (V_{r} = 1/s^{2}) is less than 0.01 rad/sec.

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 15 - Question 64

Practice Test: Electronics Engineering (ECE)- 15 - Question 65

Find the capacitor voltage VC at t = 1msec if switch is closed as t = 0. Assume capacitor initially uncharged and op-amp is not saturated.

Detailed Solution for Practice Test: Electronics Engineering (ECE)- 15 - Question 65

Information about Practice Test: Electronics Engineering (ECE)- 15 Page

In this test you can find the Exam questions for Practice Test: Electronics Engineering (ECE)- 15 solved & explained in the simplest way possible.
Besides giving Questions and answers for Practice Test: Electronics Engineering (ECE)- 15, EduRev gives you an ample number of Online tests for practice

Download as PDF