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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.
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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,
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QUESTION: 1

**Question 1 to 5 carry One Mark each**

**Q.**

**According to the weather______it is going to be cloudly today**

Solution:

QUESTION: 2

What is the unit digit in

Solution:

QUESTION: 3

In the following questions, a sentence has been given in direct/indirect speech.

She said, “Let them play”.

Solution:

QUESTION: 4

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

Ostrich : Bird

Solution:

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?

Solution:

QUESTION: 6

**Question 6 to 10 carry Two Marks each**

**Q.**

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

Solution:

QUESTION: 7

If x = y^{a} , y = z^{b} and z = x^{c} then abc = ?

Solution:

QUESTION: 8

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

Solution:

QUESTION: 9

The value of X in the following figure is

Solution:

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 a_{11} = a_{12} = a_{21} = 1 and a_{22} = –1. If the eigen values of A^{19} can be written in the

form then value of a × b is ________________

Solution:

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 ____________**

Solution:

QUESTION: 14

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

Solution:

*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 ______________.

Solution:

*Answer can only contain numeric values

QUESTION: 16

The value of current I_{1} is

____________________

Solution:

*Answer can only contain numeric values

QUESTION: 17

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

Solution:

QUESTION: 18

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

Solution:

QUESTION: 19

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

Solution:

QUESTION: 20

Aliasing occurs when sampling frequency ω_{s} where ω_{m} is message frequency?

Solution:

QUESTION: 21

Laplace transform analysis helps in

Solution:

QUESTION: 22

Which one is not an advant age of SSB over AM

Solution:

QUESTION: 23

Flash ADC is

Solution:

QUESTION: 24

In the common base stage of figure. I_{CQ} = 1mA and β = 7.5 T he input Resistance is

Solution:

QUESTION: 25

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

wave is po larized in

Solution:

*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 ______________

Solution:

QUESTION: 27

The figure shows a dependent current source.It

Solution:

QUESTION: 28

The Laplace transformation of e^{at} cosh(bt) is

Solution:

QUESTION: 29

The power factor for the circuit shown is

Solution:

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. T_{o} = 20 + 273 = 293

T_{e} = (F – 1)T o = (2.01 – 1) × 293 = 296 K

QUESTION: 33

The JFET in the circuit shown in figure has I_{DSS} = 10 mA and V_{P} = –5V and the value of resistance.

R_{S} for drain current I_{DS} = 6.4 mA (nearest answer)

Solution:

QUESTION: 34

Consider the following model of a JFET amplifier

Here I_{DSS} = 8mA & V_{P} = –4V the value of V_{DS} will be

Solution:

QUESTION: 35

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

Solution:

QUESTION: 36

For the shown circuit below the output volt age V_{o} is

Solution:

QUESTION: 37

A Si sample doped with 10^{18} /cm^{3} donar impurit y has a resistance of 10. T he sample has an area of

10^{–6} cm^{2} 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 = x^{2} ,

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 y^{2} = 12x, t hen k is ___________

Solution:

QUESTION: 41

Determ ine the ran ge of k such that fee dback cont rol system hav ing char acteristic equation

s ( s^{2} + s + 1) (s + 4) + k = 0 will be stable.

Solution:

QUESTION: 42

The solution of the differential equation,

Solution:

QUESTION: 43

Consider the circuit shown in figure

if 4R^{2}C = 3L, t he reson ance frequency ω_{o} is

Solution:

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/s^{2}, what would be t he value of centroid

Solution:

QUESTION: 46

Signal x(t) shown below can be represented as

Solution:

QUESTION: 47

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

Solution:

QUESTION: 48

The mininized version of logic circuit shown in figure below is

Solution:

QUESTION: 49

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

radio signal. Whe n he travels in the tunnel, news spread about bad weather. Select t he correct opt ion

given below

Solution:

QUESTION: 50

Find the current I for the circuit shown below

Solution:

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

Solution:

QUESTION: 54

Consider a transistor circuit the value of

Solution:

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)

Solution:

QUESTION: 59

Value of

Solution:

QUESTION: 60

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

load will be

where Z_{L} = R + jX

Solution:

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

Solution:

QUESTION: 63

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

Solution:

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

Solution:

QUESTION: 65

A series RL circuit has a constant voltage ‘V’ applied at t = 0. A t what time V_{R} = V_{L}

Solution:

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