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# GATE Mock Test Electronics Engineering (ECE)- 6

## 65 Questions MCQ Test GATE ECE (Electronics) 2022 Mock Test Series | GATE Mock Test Electronics Engineering (ECE)- 6

Description
This mock test of GATE Mock Test Electronics Engineering (ECE)- 6 for GATE helps you for every GATE entrance exam. This contains 65 Multiple Choice Questions for GATE GATE Mock Test Electronics Engineering (ECE)- 6 (mcq) to study with solutions a complete question bank. The solved questions answers in this GATE Mock Test Electronics Engineering (ECE)- 6 quiz give you a good mix of easy questions and tough questions. GATE students definitely take this GATE Mock Test Electronics Engineering (ECE)- 6 exercise for a better result in the exam. You can find other GATE Mock Test Electronics Engineering (ECE)- 6 extra questions, long questions & short questions for GATE on EduRev as well by searching above.
QUESTION: 1

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QUESTION: 2

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QUESTION: 3

### In the following questions, a sentence has been given in direct/indirect speech. She said, “Let them play”.

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QUESTION: 4

Select the pair that best express a relationship similar to the one expressed in the question pair:

Ostrich : Bird

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QUESTION: 5

A and B together can do a piece of work in 12 days, which B and C together can do in 16 days. After A has
been working it for 5 days and B for 7 days, C finishes it in 13 days. In how many days C alone will do the
work?

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QUESTION: 6

Question 6 to 10 carry Two Marks each

Q.

The sufficient condition for matrix ‘A’ to be diagonalizable is

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QUESTION: 7

If x = ya , y = zb and z = xc then abc = ?

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QUESTION: 8

Out of the four alternatives suggested select the one which is correct

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QUESTION: 9

The value of X in the following figure is

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QUESTION: 10

The piechart shows the distribution of New York market share by volume of different computer companies
in 2005.

Number of units sold in 2005 in New York = 1,500
Value of units sold in 2005 in New York = US\$ 16,50,000

For the year 2005, which company has realised the lowest average unit sales price for a PC ?

Solution:
*Answer can only contain numeric values
QUESTION: 11

If for a 2 × 2 matrix a11 = a12 = a21 = 1 and a22 = –1. If the eigen values of A19 can be written in the
form then value of a × b is ________________

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QUESTION: 12

If X(t ) is random procoss defined as
X(t ) = A + Y (t ) where Y(t ) is zero mean random process and Auto-correlation function of X(t) is defined as

Value of C will be, If A, C are constant

Solution:

*Answer can only contain numeric values
QUESTION: 13

Question 11 to 35 carry One Mark each

Q.

Value of a is ____________

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QUESTION: 14

ii is of the form, where (i= sqrt {-1})

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*Answer can only contain numeric values
QUESTION: 15

6 boys and 6 girls sit in a row randomly. The probability that all the six girls sit together is in the form 1/a. Value of a is ______________.

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*Answer can only contain numeric values
QUESTION: 16

The value of current I1 is

____________________

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*Answer can only contain numeric values
QUESTION: 17

For a unity feedback system whose open - loop transfer function is   the velocity error is _________________

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QUESTION: 18

First derivative of th e signal x(t ) will be

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QUESTION: 19

Which unit is adopted for magnit ude measurement in Bode plot s.

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QUESTION: 20

Aliasing occurs when sampling frequency ωs where ωm is message frequency?

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QUESTION: 21

Laplace transform analysis helps in

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QUESTION: 22

Which one is not an advant age of SSB over AM

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QUESTION: 23

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QUESTION: 24

In the common base stage of figure. ICQ = 1mA and β = 7.5 T he input Resistance is

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QUESTION: 25

Magnetic field component of a plane wav e in a lossless dielectric is given as

wave is po larized in

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*Answer can only contain numeric values
QUESTION: 26

A 20 MHz uniform plane wave propagate in lossy dielectric medium which amplit ude is reduced by 20%
aft er every meter traveled. Attenuation constant (Np/m) will be ______________

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QUESTION: 27

The figure shows a dependent current source.It

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QUESTION: 28

The Laplace transformation of eat cosh(bt) is

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QUESTION: 29

The power factor for the circuit shown is

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QUESTION: 30

Consider the transistor circuit shown below

The average power dissipated for one cycle of operation is given by

Solution:

QUESTION: 31

Common Data Questi on s 29 to 30

Q.

Two amplifiers A and B are to be connectd in cascade. Find out the order in which the amplifiers must be connected to minimise the noise. Amplifiers A has noise factor of 1.5, gain of 10 dB and amplifier B has noise figure 2 dB, gain of 15 dB.

Solution:

QUESTION: 32

Determine the equivalent noise temperat ure of bot h the amplifiers assuming the reference temperature of
20°C and compare with that of cascaded amlifier.

Solution:

Sol. To = 20 + 273 = 293
Te = (F – 1)T o = (2.01 – 1) × 293 = 296 K

QUESTION: 33

The JFET in the circuit shown in figure has IDSS = 10 mA and VP = –5V and the value of resistance.
RS for drain current IDS = 6.4 mA (nearest answer)

Solution:

QUESTION: 34

Consider the following model of a JFET amplifier

Here IDSS = 8mA & VP = –4V the value of VDS will be

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QUESTION: 35

Content of memory location 2070H aft er executing instruction LDAX D is

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QUESTION: 36

For the shown circuit below the output volt age Vo is

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QUESTION: 37

A Si sample doped with 1018 /cm3 donar impurit y has a resistance of 10. T he sample has an area of
10–6 cm2  a length of 10 μm. T he doping efficiency of the sample is

Solution:

*Answer can only contain numeric values
QUESTION: 38

Question 36 to 65 carry Two Marks each

Q.

The value of   where R is the region in the first quadrant bounded by the curve y = x2 ,
y + x = 2 and x = 0.

_______________

Solution:

*Answer can only contain numeric values
QUESTION: 39

For  we have y = 1 at x = 0. By using Euler method and taking the step size 0.1. Find the value
of y at x = 0.4.

_________________

Solution:

*Answer can only contain numeric values
QUESTION: 40

If x + y = k is normal to y2 = 12x, t hen k is ___________

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QUESTION: 41

Determ ine the ran ge of k such that fee dback cont rol system hav ing char acteristic equation
s ( s2 + s + 1) (s + 4) + k = 0 will be stable.

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QUESTION: 42

The solution of the differential equation,

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QUESTION: 43

Consider the circuit shown in figure

if 4R2C = 3L, t he reson ance frequency ωo is

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QUESTION: 44

What is the transfer funct ion whose approximate plot is shown in figure.

Solution:

Corner frequenc ies ar e 2.5 an d 40 rad/sec
20 lo g k = 40 + 20 lo g 2 .5 = 47. 95
k = 250.

*Answer can only contain numeric values
QUESTION: 45

For a unity feedback system with G(s) = 10/s2, what would be t he value of centroid

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QUESTION: 46

Signal x(t) shown below can be represented as

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QUESTION: 47

If memory chip size is 256 × 1 bits, the n umber of chips required for 1 KB memory is

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QUESTION: 48

The mininized version of logic circuit shown in figure below is

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QUESTION: 49

A man enters into tunnel with velocity v of width 7m and height 4 m and listen th e news through AM
given below

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QUESTION: 50

Find the current I for the circuit shown below

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QUESTION: 51

Consider an AM system with additive thermal noise having a PSD  η/2 = 10–12 W/MHz. Assuming that
baseband message signal x(t) has a bandwidth of 4 KHz and the amplitude distribution shown in figure below.

The signal is demodulated by envelope detection and appropriate post detect ion filtering assume M = 1. Find the minimum value of carrier amplitude Ac that will yield (S/No)  40 dB.

Solution:

QUESTION: 52

Three lossless quart er wave transformer is connected as shown in figure

Which is the necessary condition for no reflection at the input if

Solution:

QUESTION: 53

The Y parameter of the two port network shown below is

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QUESTION: 54

Consider a transistor circuit the value of

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QUESTION: 55

Consider a periodic signal x(t) shown below

It has Fourier ser ies representation

Choose the true statement.

Solution:

x(t) is odd + halfwave symmetry.
So only odd terms will come in to the picture.

QUESTION: 56

The electric field strength at distant point, P, due to a point charge, +q, located at the origin, is 100 µ V/m. If the point charge is now enclosed by a perfectly conducting metal sheet sphere whose center is at the origin, then the electric field strength at the point, P, outside the sphere, becomes

Solution:

QUESTION: 57

For particular. semiconductor material following parameter are observed.

hese parameters are independent of temperature the measure conductivit y of the intrinsic material is

The conductivit y at T = 500 K is

Solution:

*Answer can only contain numeric values
QUESTION: 58

Two point charge 1 μC and 4 μC are placed at (–2, 1, 5) and (1, 3, –1) respectively. The energy stored
in the field will be (in mJ)

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QUESTION: 59

Value of

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QUESTION: 60

If maximum power transfer will take place in the circuit at   then maximum power transfer to the

where ZL = R + jX

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QUESTION: 61

Power spectral density of random process x(t) is shown in figure below. It consist of delta funct ion at f = 0
and triangular component . Mean square value of X(t ) is

Solution:

QUESTION: 62

Find C/R of system shown in figure below

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QUESTION: 63

Which of the following is correct signal space diagram (constellation diagram) for the unipolar return to zero code.

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QUESTION: 64

For the patterns shown in figure (i) and (ii) if the frequency applied to horizont al plate is 50 Hz t hen,
the frequencies of the vert ical plates will be respectively

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QUESTION: 65

A series RL circuit has a constant voltage ‘V’ applied at t = 0. A t what time VR = VL

Solution: