Q. 1 – Q. 5 carry one mark each.
Q.1 Which of the following is CORRECT
with respect to grammar and usage?
Mount Everest is ____________.
(A) the highest peak in the world
(B) highest peak in the world
(C) one of highest peak in the world
(D) one of the highest peak in the world
Answer:(A)
Q.2 The policeman asked the victim
of a theft, “What did you ?”
(A) loose (B) lose (C) loss (D) louse
Answer:(B)
Q.3 Despite the new medicine’s ______________ in treating
diabetes, it is not ______________widely.
(A) effectiveness --- prescribed (B) availability --- used
(C) prescription --- available (D) acceptance --- proscribed
Answer:(A)
Q.4 In a huge pile of apples and oranges, both ripe and unripe
mixed together, 15% are unripe fruits. Of
the unripe fruits, 45% are apples. Of the ripe ones, 66% are
oranges. If the pile contains a total of
5692000 fruits, how many of them are apples?
(A) 2029198 (B) 2467482
(C) 2789080 (D) 3577422
Answer:(A)
Q.5 Michael lives 10 km away from where I live. Ahmed
lives 5 km away and Susan lives 7 km away
from where I live. Arun is farther away than Ahmed
but closer than Susan from where I live. From
the information provided here, what is one possible
distance (in km) at which I live from Arun’s
place?
(A) 3.00 (B) 4.99 (C) 6.02 (D) 7.01
Answer:(C)
Q. 6 – Q. 10 carry two marks each.
Q.6 A person moving through a tuberculosis prone zone
has a 50% probability of becoming infected.
However, only 30% of infected people develop the
disease. What percentage of people moving
through a tuberculosis prone zone remains infected
but does not show symptoms of disease?
(A) 15 (B) 33 (C) 35 (D) 37
Answer:(C)
Q.7 In a world filled with uncertainty, he was glad
to have many good friends. He had always assisted
them in times of need and was confident that they
would reciprocate. However, the events of the
last week proved him wrong.
Which of the following inference(s) is/are
logically valid and can be inferred from the above
passage?
(i) His friends were always asking him to help them.
(ii) He felt that when in need of help, his friends would let him down.
(iii)He was sure that his friends would help him when in need.
(iv) His friends did not help him last week.
(A) (i) and (ii) (B) (iii) and (iv) (C) (iii) only (D) (iv) only
Answer:(B)
Q.8 Leela is older than her cousin Pavithra. Pavithra’s
brother Shiva is older than Leela. When Pavithra
and Shiva are visiting Leela, all three like to play chess.
Pavithra wins more often than Leela does.
Which one of the following statements must be
TRUE based on the above?
(A) When Shiva plays chess with Leela and Pavithra,
he often loses.
(B) Leela is the oldest of the three.
(C) Shiva is a better chess player than Pavithra.
(D) Pavithra is the youngest of the three.
Answer:(D)
Answer:(C)
Q.10 P, Q, R and S are working on a project. Q can
finish the task in 25 days, working alone for 12
hours a day. R can finish the task in 50 days, working
alone for 12 hours per day. Q worked 12
hours a day but took sick leave in the beginning for two
days. R worked 18 hours a day on all days.
What is the ratio of work done by Q and R after
7 days from the start of the project?
(A) 10:11 (B) 11:10 (C) 20:21 (D) 21:20
Answer:(C)
Q. 1 – Q. 25 carry one mark each.
Answer:(C)
Q.2 The second moment of a
Poisson-distributed randomvariable is 2.
The mean of the random
variable is _______
Answer:(0.9:1.1)
Answer:(B)
(A) The solutions have neither maxima nor minima
anywhere except at the boundaries.
(B) The solutions are not separable in the coordinates.
(C) The solutions are not continuous.
(D) The solutions are not dependent on the boundary conditions.
Answer:(A)
Answer:(C)
Q.6 Which one of the following is an eigen function of the class
of all continuous-time, linear, time-invariant systems (u(t)
denotes the unit-step function)?
Answer:(C)
Answer:(B)
Answer:(B)
Answer:(D)
Q.10 A continuous-time sinusoid of frequency
33 Hz is multiplied with a periodic Dirac impulse train of
frequency 46 Hz. The resulting signal is passed through
an ideal analog low-pass filter with a cutoff
frequency of 23 Hz. The fundamental frequency
(in Hz) of the output is _________
Answer:(12:14)
Q.11 A small percentage of impurity is added to an intrinsic
semiconductor at 300 K. Which one of the
following statements is true for the energy band diagram
shown in the following figure?
(A) Intrinsic semiconductor doped with pentavalent
atoms to form n-type semiconductor
(B) Intrinsic semiconductor doped with trivalent atoms
to form n-type semiconductor
(C) Intrinsic semiconductor doped with pentavalent
atoms to form p-type semiconductor
(D) Intrinsic semiconductor doped with trivalent
atoms to form p-type semiconductor
Answer:(A)
Q.12 Consider the following statements for a
metal oxide semiconductor field effect transistor
(MOSFET):
P: As channel length reduces, OFF-state current increases.
Q: As channel length reduces, output resistance increases.
R: As channel length reduces, threshold voltage remains constant.
S: As channel length reduces, ON current increases.
Which of the above statements are INCORRECT?
(A) P and Q (B) P and S (C) Q and R (D) R and S
Answer:(C)
Answer:(B)
Answer:(2.9:3.1)
Q.15 Consider the oscillator circuit shown in the figure.
The function of the network (shown in dotted
lines) consisting of the 100 kΩ resistor in series with
the two diodes connected back-to-back is to:
(A) introduce amplitude stabilization by preventing the
op amp from saturating and thus producing
sinusoidal oscillations of fixed amplitude
(B) introduce amplitude stabilization by forcing the opamp to
swing between positive and negative
saturation and thus producing square wave oscillations
of fixed amplitude
(C) introduce frequency stabilization by forcing the
circuit to oscillate at a single frequency
(D) enable the loop gain to take on a value
that produces square wave oscillations
Answer:(A)
Q.16 The block diagram of a frequency synthesizer consisting
of a Phase Locked Loop (PLL) and a divide-by-N counter
(comprising ÷ 2 ,÷ 4, ÷ 8, ÷ 16 outputs) is sketched below. The
synthesizer is excited with a 5 kHz signal (Input 1). The free-
running frequency of the PLL is set to 20 kHz. Assume that
the commutator switch makes contacts repeatedly
in the order 1-2-3-4.
The corresponding frequencies synthesized are:
(A) 10 kHz, 20 kHz, 40 kHz, 80 kHz
(B) 20 kHz, 40 kHz, 80 kHz, 160 kHz
(C) 80 kHz, 40 kHz, 20 kHz, 10 kHz
(D) 160 kHz, 80 kHz, 40 kHz, 20 kHz
Answer:(A)
Q.17 The output of the combinational circuit
given below is
(A) A+B+C
(B) A(B+C)
(C) B(C+A)
(D) C(A+B)
Answer:(C)
Q.18 What is the voltage V - out in the following circuit?
Answer:(C)
Q.19 Match the inferences X, Y, and Z, about a
system, to the corresponding properties of the elements
of first column in Routh’s Table of the system characteristic equation.
X: The system is stable …
Y: The system is unstable …
Z: The test breaks down …
P: … when all elements are positive
Q: … when any one element is zero
R: … when there is a change in sign of coefficients
(A) X→P, Y→Q, Z→R (B) X→Q, Y→P, Z→R
(C) X→R, Y→Q, Z→P (D) X→P, Y→R, Z→Q
Answer:(D)
Q.20 A closed-loop control system is stable if the Nyquist
plot of the corresponding open-loop transfer
function
(A) encircles the s-plane point (−1 + j0) in the counterclockwise
direction as many times as the number of right-half s-plane poles.
(B) encircles the s-plane point (0 − j1) in the clockwise direction
as many times as the number of right-half s-plane poles.
(C) encircles the s-plane point (−1 + j0) in the counterclockwise
direction as many times as the number of left-half s-plane poles.
(D) encircles the s-plane point (−1 + j0) in the counterclockwise
direction as many times as the number of right-half s-plane zeros.
Answer:(A)
Q.21 Consider binary data transmission at a rate of 56 kbps
using baseband binary pulse amplitude
modulation (PAM) that is designed to have a raised-cosine
spectrum. The transmission bandwidth
(in kHz) required for a roll-off factor of 0.25 is ______
Answer:(34.5:35.5)
Q.22.A superheterodyne receiver operates in the frequency
range of 58 MHz − 68 MHz. The intermediate frequency
Answer:(4.9:5.1)
Q.23 The amplitude of a sinusoidal carrier is modulated
by a single sinusoid to obtain the amplitude
modulated signal
Answer:(0.49:0.51)
Answer:(-0.28 : -0.22)
Q.25 The propagation constant of a lossy
transmission line is
(A) L = 200 µH/m, C = 0.1 µF/m, R = 50 Ω/m, G = 0.02 S/m
(B) L = 250 µH/m, C = 0.1 µF/m, R = 100 Ω/m, G = 0.04 S/m
(C) L = 200 µH/m, C = 0.2 µF/m, R = 100 Ω/m, G = 0.02 S/m
(D) L = 250 µH/m, C = 0.2 µF/m, R = 50 Ω/m, G = 0.04 S/m
Answer:(B)
Q. 26 – Q. 55 carry two marks each.
Answer:(18:22)
Answer:(-136 : -132)
Answer:(4.66:4.76)
Q.30 The Laplace transform of the causal periodic square
wave of period T shown in the figure below is
Answer:(MTA)
Q.31 A network consisting of a finite number of linear resistor (R),
inductor (L), and capacitor (C) elements, connected all in
series or all in parallel, is excited with a source of the form
Answer:(A)
Answer:(C)
Answer:(0.78:0.82)
Answer:(7.9:8.1)
Answer:(-5.0 : -4.6)
Answer:(28:29)
Answer:(1.10:1.25)
Answer:(A)
Answer:(14.9:15.5)
Q41. A p-i-n photodiode of responsivity 0.8A/W
is connected to the inverting input of an ideal opamp as
shown in the figure, +Vcc = 15 V, −Vcc
= −15V, Load resistor
Answer:(790 : 810 ; -810 : -790)
Q.42 Identify the circuit below.
Answer:(C)
Answer:(1.2 : 1.3 ; -1.3 : -1.2)
Answer:( 3 : 3)
Q.50 An analog pulse s(t) is transmitted over an additive
white Gaussian noise (AWGN) channel. The
received signal is r(t) = s(t) + n(t), where n(t)
is additive white Gaussian noise with power spectral
Answer:(A)
Answer:(MTA)
Q.52 An antenna pointing in a certain direction has a
Answer:(A)
Answer:(2.7 : 3.3)
The polarization of the incident wave, the polarization
Q.1 Which of the following is CORRECT
with respect to grammar and usage?
Mount Everest is ____________.
(A) the highest peak in the world
(B) highest peak in the world
(C) one of highest peak in the world
(D) one of the highest peak in the world
Answer:(A)
Q.2 The policeman asked the victim
of a theft, “What did you ?”
(A) loose (B) lose (C) loss (D) louse
Answer:(B)
Q.3 Despite the new medicine’s ______________ in treating
diabetes, it is not ______________widely.
(A) effectiveness --- prescribed (B) availability --- used
(C) prescription --- available (D) acceptance --- proscribed
Answer:(A)
Q.4 In a huge pile of apples and oranges, both ripe and unripe
mixed together, 15% are unripe fruits. Of
the unripe fruits, 45% are apples. Of the ripe ones, 66% are
oranges. If the pile contains a total of
5692000 fruits, how many of them are apples?
(A) 2029198 (B) 2467482
(C) 2789080 (D) 3577422
Answer:(A)
Q.5 Michael lives 10 km away from where I live. Ahmed
lives 5 km away and Susan lives 7 km away
from where I live. Arun is farther away than Ahmed
but closer than Susan from where I live. From
the information provided here, what is one possible
distance (in km) at which I live from Arun’s
place?
(A) 3.00 (B) 4.99 (C) 6.02 (D) 7.01
Answer:(C)
Q. 6 – Q. 10 carry two marks each.
Q.6 A person moving through a tuberculosis prone zone
has a 50% probability of becoming infected.
However, only 30% of infected people develop the
disease. What percentage of people moving
through a tuberculosis prone zone remains infected
but does not show symptoms of disease?
(A) 15 (B) 33 (C) 35 (D) 37
Answer:(C)
Q.7 In a world filled with uncertainty, he was glad
to have many good friends. He had always assisted
them in times of need and was confident that they
would reciprocate. However, the events of the
last week proved him wrong.
Which of the following inference(s) is/are
logically valid and can be inferred from the above
passage?
(i) His friends were always asking him to help them.
(ii) He felt that when in need of help, his friends would let him down.
(iii)He was sure that his friends would help him when in need.
(iv) His friends did not help him last week.
(A) (i) and (ii) (B) (iii) and (iv) (C) (iii) only (D) (iv) only
Answer:(B)
Q.8 Leela is older than her cousin Pavithra. Pavithra’s
brother Shiva is older than Leela. When Pavithra
and Shiva are visiting Leela, all three like to play chess.
Pavithra wins more often than Leela does.
Which one of the following statements must be
TRUE based on the above?
(A) When Shiva plays chess with Leela and Pavithra,
he often loses.
(B) Leela is the oldest of the three.
(C) Shiva is a better chess player than Pavithra.
(D) Pavithra is the youngest of the three.
Answer:(D)
Answer:(C)
Q.10 P, Q, R and S are working on a project. Q can
finish the task in 25 days, working alone for 12
hours a day. R can finish the task in 50 days, working
alone for 12 hours per day. Q worked 12
hours a day but took sick leave in the beginning for two
days. R worked 18 hours a day on all days.
What is the ratio of work done by Q and R after
7 days from the start of the project?
(A) 10:11 (B) 11:10 (C) 20:21 (D) 21:20
Answer:(C)
Q. 1 – Q. 25 carry one mark each.
Answer:(C)
Q.2 The second moment of a
Poisson-distributed randomvariable is 2.
The mean of the random
variable is _______
Answer:(0.9:1.1)
Answer:(B)
(A) The solutions have neither maxima nor minima
anywhere except at the boundaries.
(B) The solutions are not separable in the coordinates.
(C) The solutions are not continuous.
(D) The solutions are not dependent on the boundary conditions.
Answer:(A)
Answer:(C)
Q.6 Which one of the following is an eigen function of the class
of all continuous-time, linear, time-invariant systems (u(t)
denotes the unit-step function)?
Answer:(C)
Answer:(B)
Answer:(B)
Answer:(D)
Q.10 A continuous-time sinusoid of frequency
33 Hz is multiplied with a periodic Dirac impulse train of
frequency 46 Hz. The resulting signal is passed through
an ideal analog low-pass filter with a cutoff
frequency of 23 Hz. The fundamental frequency
(in Hz) of the output is _________
Answer:(12:14)
Q.11 A small percentage of impurity is added to an intrinsic
semiconductor at 300 K. Which one of the
following statements is true for the energy band diagram
shown in the following figure?
(A) Intrinsic semiconductor doped with pentavalent
atoms to form n-type semiconductor
(B) Intrinsic semiconductor doped with trivalent atoms
to form n-type semiconductor
(C) Intrinsic semiconductor doped with pentavalent
atoms to form p-type semiconductor
(D) Intrinsic semiconductor doped with trivalent
atoms to form p-type semiconductor
Answer:(A)
Q.12 Consider the following statements for a
metal oxide semiconductor field effect transistor
(MOSFET):
P: As channel length reduces, OFF-state current increases.
Q: As channel length reduces, output resistance increases.
R: As channel length reduces, threshold voltage remains constant.
S: As channel length reduces, ON current increases.
Which of the above statements are INCORRECT?
(A) P and Q (B) P and S (C) Q and R (D) R and S
Answer:(C)
Answer:(B)
Answer:(2.9:3.1)
Q.15 Consider the oscillator circuit shown in the figure.
The function of the network (shown in dotted
lines) consisting of the 100 kΩ resistor in series with
the two diodes connected back-to-back is to:
(A) introduce amplitude stabilization by preventing the
op amp from saturating and thus producing
sinusoidal oscillations of fixed amplitude
(B) introduce amplitude stabilization by forcing the opamp to
swing between positive and negative
saturation and thus producing square wave oscillations
of fixed amplitude
(C) introduce frequency stabilization by forcing the
circuit to oscillate at a single frequency
(D) enable the loop gain to take on a value
that produces square wave oscillations
Answer:(A)
Q.16 The block diagram of a frequency synthesizer consisting
of a Phase Locked Loop (PLL) and a divide-by-N counter
(comprising ÷ 2 ,÷ 4, ÷ 8, ÷ 16 outputs) is sketched below. The
synthesizer is excited with a 5 kHz signal (Input 1). The free-
running frequency of the PLL is set to 20 kHz. Assume that
the commutator switch makes contacts repeatedly
in the order 1-2-3-4.
The corresponding frequencies synthesized are:
(A) 10 kHz, 20 kHz, 40 kHz, 80 kHz
(B) 20 kHz, 40 kHz, 80 kHz, 160 kHz
(C) 80 kHz, 40 kHz, 20 kHz, 10 kHz
(D) 160 kHz, 80 kHz, 40 kHz, 20 kHz
Answer:(A)
Q.17 The output of the combinational circuit
given below is
(A) A+B+C
(B) A(B+C)
(C) B(C+A)
(D) C(A+B)
Answer:(C)
Q.18 What is the voltage V - out in the following circuit?
Answer:(C)
Q.19 Match the inferences X, Y, and Z, about a
system, to the corresponding properties of the elements
of first column in Routh’s Table of the system characteristic equation.
X: The system is stable …
Y: The system is unstable …
Z: The test breaks down …
P: … when all elements are positive
Q: … when any one element is zero
R: … when there is a change in sign of coefficients
(A) X→P, Y→Q, Z→R (B) X→Q, Y→P, Z→R
(C) X→R, Y→Q, Z→P (D) X→P, Y→R, Z→Q
Answer:(D)
Q.20 A closed-loop control system is stable if the Nyquist
plot of the corresponding open-loop transfer
function
(A) encircles the s-plane point (−1 + j0) in the counterclockwise
direction as many times as the number of right-half s-plane poles.
(B) encircles the s-plane point (0 − j1) in the clockwise direction
as many times as the number of right-half s-plane poles.
(C) encircles the s-plane point (−1 + j0) in the counterclockwise
direction as many times as the number of left-half s-plane poles.
(D) encircles the s-plane point (−1 + j0) in the counterclockwise
direction as many times as the number of right-half s-plane zeros.
Answer:(A)
Q.21 Consider binary data transmission at a rate of 56 kbps
using baseband binary pulse amplitude
modulation (PAM) that is designed to have a raised-cosine
spectrum. The transmission bandwidth
(in kHz) required for a roll-off factor of 0.25 is ______
Answer:(34.5:35.5)
Q.22.A superheterodyne receiver operates in the frequency
range of 58 MHz − 68 MHz. The intermediate frequency
Answer:(4.9:5.1)
Q.23 The amplitude of a sinusoidal carrier is modulated
by a single sinusoid to obtain the amplitude
modulated signal
Answer:(0.49:0.51)
Answer:(-0.28 : -0.22)
Q.25 The propagation constant of a lossy
transmission line is
(A) L = 200 µH/m, C = 0.1 µF/m, R = 50 Ω/m, G = 0.02 S/m
(B) L = 250 µH/m, C = 0.1 µF/m, R = 100 Ω/m, G = 0.04 S/m
(C) L = 200 µH/m, C = 0.2 µF/m, R = 100 Ω/m, G = 0.02 S/m
(D) L = 250 µH/m, C = 0.2 µF/m, R = 50 Ω/m, G = 0.04 S/m
Answer:(B)
Q. 26 – Q. 55 carry two marks each.
Answer:(18:22)
Answer:(4.66:4.76)
Q.30 The Laplace transform of the causal periodic square
wave of period T shown in the figure below is
Answer:(MTA)
Q.31 A network consisting of a finite number of linear resistor (R),
inductor (L), and capacitor (C) elements, connected all in
series or all in parallel, is excited with a source of the form
Answer:(A)
Q.32 A first-order low-pass filter of time constant T is excited
with different input signals (with zero initial conditions up to t = 0).
Match the excitation signals X, Y, Z with the corresponding time
responses for t ≥ 0:
(A) X→R, Y→Q, Z→P (B) X→Q, Y→P, Z→R
(C) X→R, Y→P, Z→Q (D) X→P, Y→R, Z→Q
Answer:(C)
Answer:(0.9:1.1)
Q.34 In the circuit shown in the figure,
the maximum power (in watt) delivered to the
resistor R is __________
Answer:(0.78:0.82)
Q.35 Consider the signal
Answer:(7.9:8.1)
Answer:(-5.0 : -4.6)
Q.37 Consider an n-channel metal oxide semiconductor field
effect transistor (MOSFET) with a gate-to-source
voltage of
Answer:(28:29)
Q.38 The figure below shows the doping distribution
in a p-type semiconductor in log scale.
The magnitude of the electric field (in kV/cm)
in the semiconductor due to non uniform doping
is _________
Answer:(1.10:1.25)
Q.39 Consider a silicon sample at T = 300 K,
with a uniform donor density
Answer:(A)
Answer:(14.9:15.5)
Q41. A p-i-n photodiode of responsivity 0.8A/W
is connected to the inverting input of an ideal opamp as
shown in the figure, +Vcc = 15 V, −Vcc
= −15V, Load resistor
Answer:(790 : 810 ; -810 : -790)
Q.42 Identify the circuit below.
(A) Binary to Gray code converter
(B) Binary to XS3 converter
(C) Gray to Binary converter
(D) XS3 to Binary converter
Answer:(MTA)
Answer:(MTA)
Q.43 The functionality implemented
by the circuit below is
(A) 2-to-1 multiplexer
(B) 4-to-1 multiplexer
(C) 7-to-1 multiplexer
(D) 6-to-1 multiplexer
Answer:(B)
Answer:(B)
Q.44 In an 8085 system, a PUSH operation requires more
clock cycles than a POP operation. Which one
of the following options is the correct reason for this?
(A) For POP, the data transceivers remain in the same direction
as for instruction fetch (memory to
processor), whereas for PUSH their direction has to be reversed.
(B) Memory write operations are slower than memory read
operations in an 8085 based system.
(C) The stack pointer needs to be pre-decremented before
writing registers in a PUSH, whereas a
POP operation uses the address already in the stack pointer.
(D) Order of registers has to be interchanged for a PUSH
operation, whereas POP uses their natural
order.
Answer:(C)
Q.45 The open-loop transfer function of a unity-feedback
control system is
The value of K at the breakaway point of the feedback
control system’s root-locus plot is ________
Answer:(1.2 : 1.3 ; -1.3 : -1.2)
Q.46 The open-loop transfer function of a unity-feedback
control system is given by
For the peak overshoot of the closed-loop system to a unit
step input to be 10%, the value of K is
____________
Answer:(2.7 : 3.0)
Answer:(2.7 : 3.0)
Q.47 The transfer function of a linear time invariant
system is given by
The number of zeros in the right half of the
s-plane is ________
Answer:( 3 : 3)
Q.48 Consider a discrete memoryless source
with alphabet S =
The entropy of the source (in bits) is _______
Answer:( 1.8 : 2.2)
Q.49 A digital communication system uses a repetition code
for channel encoding/decoding. During transmission, each
bit is repeated three times (0 is transmitted as 000, and 1 is
transmitted as 111). It is assumed that the source puts out
symbols independently and with equal probability. The
decoder operates as follows: In a block of three received bits,
if the number of zeros exceeds the number of ones, the
decoder decides in favor of a 0, and if the number of ones
exceeds the number of zeros, the decoder decides in
favor of a 1. Assuming a binary symmetric channel with
crossover probability p = 0.1,
the average probability of error is ________
Answer:(0.025 : 0.030 )
Answer:(0.025 : 0.030 )
Q.50 An analog pulse s(t) is transmitted over an additive
white Gaussian noise (AWGN) channel. The
received signal is r(t) = s(t) + n(t), where n(t)
is additive white Gaussian noise with power spectral
Answer:(A)
Q.51 The current density in a medium is given by
Answer:(MTA)
Q.52 An antenna pointing in a certain direction has a
noise temperature of 50 K. The ambient
temperature is 290 K. The antenna is connected to a pre-
amplifier that has a noise figure of 2 dB and an available gain
of 40 dB over an effective bandwidth of 12 MHz.
The effective input noise temperature
Answer:(A)
Q.53 Two lossless X-band horn antennas are separated
by a distance of 200λ. The amplitude reflection coefficients
at the terminals of the transmitting and receiving antennas
are 0.15 and 0.18, respectively. The maximum directivities
of the transmitting and receiving antennas (over the
isotropic antenna) are 18 dB and 22 dB, respectively.
Assuming that the input power in the lossless
transmission line connected to the antenna is 2 W,
and that the antennas are perfectly aligned and
polarization matched, the power ( in mW) delivered to
the load at the receiver is ________
Answer:(2.7 : 3.3)
Q.54 The electric field of a uniform plane wave travelling
along the negative z direction is given by the following equation:
This wave is incident upon a receiving antenna placed at the
origin and whose radiated electric field towards the incident
wave is given by the following equation:
of the antenna and losses due to the
polarization mismatch are, respectively,
(A) Linear, Circular (clockwise), −5dB
(B) Circular (clockwise), Linear, −5dB
(C) Circular (clockwise), Linear, −3dB
(D) Circular (anti clockwise), Linear, −3dB
Answer:(C ; D)
Answer:(C ; D)
Q.55 The far-zone power density radiated by a
helical antenna is approximated as:
Answer:(B)
End of Question Paper
