III Year
Email: [email protected]
IEO-2016
Partners & Sponsors:
1. Find the number of pairs of positive integers (a, b) such that
(A) 0 (B) 1
2. Choose a word that is most nearly opposite in meaning to the word
(A) exonerate (B) engender
3. Fill in the blank with most suitable word
Ratan Tata possesses the ability to recognize business opportunities, and it is
that makes him to be also known for philanthropy.
(A) creativity (B) composure
4. A certain amount becomes 5 times in 3 years at compound interest. In how many years will it be
3125 times of the amount?
(A) 9 (B) 12
5. Choose the most appropriate alternative from the options given below to complete the sentence.
The number of students who have shown interest to join coaching ________ encouraging.
(A) is (B) are
6. At 9 a.m. two trains started traveling toward each other from stations 315 miles apart. They passed
each other at 12:30 p.m. the same day. If the average speed of the faster train exceeded the
average speed of the slower train by 5k
faster train, in kmph?
(A) 45 (B) 40
7. Machine A produces toffees at constant rate of 9000 toffees per hour and machine B produces
toffees at constant rate of 7200 toffees per hour. If
minimum time required to produce 100000 toffees is
(A) 12hrs (B) 12hrs19min
I Year – Electronics & Communication Engineering
[email protected], Website: www.engineeringolympiad.in
SPACE FOR ROUGH WORK
Section-I: General Ability
Find the number of pairs of positive integers (a, b) such that 6 2a b 127.− =
1 (C) 2 (D) 3
Choose a word that is most nearly opposite in meaning to the word Accuse
engender (C) abrogate (D) besmirch
blank with most suitable word
Ratan Tata possesses the ability to recognize business opportunities, and it is clearly this ______
that makes him to be also known for philanthropy.
composure (C) shrewdness (D) benevolence
A certain amount becomes 5 times in 3 years at compound interest. In how many years will it be
12 (C) 15 (D) 25
Choose the most appropriate alternative from the options given below to complete the sentence.
The number of students who have shown interest to join coaching ________ encouraging.
are (C) was (D) were
At 9 a.m. two trains started traveling toward each other from stations 315 miles apart. They passed
each other at 12:30 p.m. the same day. If the average speed of the faster train exceeded the
average speed of the slower train by 5kmph, which of the following represents the speed of the
40 (C) 47.5 (D) 42.5
Machine A produces toffees at constant rate of 9000 toffees per hour and machine B produces
toffees at constant rate of 7200 toffees per hour. If both machines work in alternate hours, then the
minimum time required to produce 100000 toffees is
12hrs19min (C) 12hrs24min (D) 12hrs30min
Electronics & Communication Engineering
1 of 13
besmirch
clearly this ______
benevolence
A certain amount becomes 5 times in 3 years at compound interest. In how many years will it be
Choose the most appropriate alternative from the options given below to complete the sentence.
The number of students who have shown interest to join coaching ________ encouraging.
At 9 a.m. two trains started traveling toward each other from stations 315 miles apart. They passed
each other at 12:30 p.m. the same day. If the average speed of the faster train exceeded the
which of the following represents the speed of the
Machine A produces toffees at constant rate of 9000 toffees per hour and machine B produces
both machines work in alternate hours, then the
12hrs30min
III Year
Email: [email protected]
IEO-2016
Partners & Sponsors:
8. Joshua and his younger brother Jishore have the same birthday. Jishore's age now is the same
Joshua's age was when Jishore was half as old as Joshua is now. Joshua was six years old when
Jishore was born. What is Joshua's age now?
(A) 18 (B) 24
9. 3 distinct numbers are chosen randomly from 401 to 800 (only natural numbers
all are divisible by 6 and 8 is
(A) 0.000053 (B) 0.00053
10. The following table gives details of six types of retail chains in Hyderabad
No. of Outlets
2012
McDonald 4
Pizza hut 2
Pizza corner 6
Dominos 12
KFC 4
American
Pizza
2
If the market-leader (in terms
as it did in sales per outlet in 2013, over 2012, then its profits in 2013 would have been
(A) 150 lakhs (B) 200 lakhs
11. Identify the choice that replaces the underlined part to form a logically and grammatically correct
statement.
Boosting world food production without gobbling up land and water will require technology to
play a larger role in the next 40 years
(A) than it did in the past 40 years
(C) than it has in the past 40 years
I Year – Electronics & Communication Engineering
[email protected], Website: www.engineeringolympiad.in
SPACE FOR ROUGH WORK
Joshua and his younger brother Jishore have the same birthday. Jishore's age now is the same
Joshua's age was when Jishore was half as old as Joshua is now. Joshua was six years old when
Jishore was born. What is Joshua's age now?
24 (C) 30 (D) 36
3 distinct numbers are chosen randomly from 401 to 800 (only natural numbers
all are divisible by 6 and 8 is
0.00053 (C) 0.000064 (D) 0.00064
The following table gives details of six types of retail chains in Hyderabad
No. of Outlets Average sales per
outlet (Lakhs)
Total profit of all
outlets (Lakhs)
2013 2012 2013 2012 2013
5 50 55 40 60
3 170 180 125 200
6 60 70 40 50
10 90 120 120 180
5 180 175 150 160
2 40 30 15 15
leader (in terms of sales) in 2012 had experienced the same percentage increase in profits
as it did in sales per outlet in 2013, over 2012, then its profits in 2013 would have been
200 lakhs (C) 160 lakhs (D) 180 lakhs
replaces the underlined part to form a logically and grammatically correct
Boosting world food production without gobbling up land and water will require technology to
play a larger role in the next 40 years than it did in the past 40 years.
than it did in the past 40 years (B) than they have in the past 40 years
than it has in the past 40 years (D) than they had in the past 40 years
Electronics & Communication Engineering
2 of 13
Joshua and his younger brother Jishore have the same birthday. Jishore's age now is the same as
Joshua's age was when Jishore was half as old as Joshua is now. Joshua was six years old when
3 distinct numbers are chosen randomly from 401 to 800 (only natural numbers). Probability that
0.00064
Total profit of all
outlets (Lakhs)
2013
200
180
160
of sales) in 2012 had experienced the same percentage increase in profits
as it did in sales per outlet in 2013, over 2012, then its profits in 2013 would have been
180 lakhs
replaces the underlined part to form a logically and grammatically correct
Boosting world food production without gobbling up land and water will require technology to
than they have in the past 40 years
than they had in the past 40 years
III Year
Email: [email protected]
IEO-2016
Partners & Sponsors:
12. Choose a pair that has most similar relationship to the given pair
Extravagance : Spartan
(A) Nature: Ambiguous
(C) Speech: Taciturn
13. A, B & C enter into a partnership in the ratio of
by 50%. If total profit at the end of one year be Rs.21,600, then B’s share in the profit is
(A) 6000 (B) 4000
14. In State X, the sales tax on FMCG is equal to 10 percent of the amount of the
above 100/-. In State Y, the sales tax on FMCG is equal to 8 percent of the entire purchase price.
For what purchase price would the sales tax in both states be equal?
(A) 180/- (B) 200/
15. Conventionally it is preferred to have decision making that is than intuitively done. However, a
recent study found that senior managers used intuition significantly more than did most mid
managers. This confirms the alternative view that intuition is actually more ef
methodical reasoning.
The conclusion above is based on which of the following assumptions?
(A) Methodical, step-by-step reasoning is inappropriate for making many real
decisions.
(B) Senior managers have the ability
reasoning in making decisions.
(C) The decisions that are made by mid
methodical reasoning as by using intuitive reasoning.
(D) Senior managers are more effective at decision making than are midlevel managers.
16. 50 people attended an exhibition. Out of them, 5 did not buy any book, 20 bought 1 book each, 15
bought 2 books each, and the rest bought at least 3 books. If the avera
person was 2, what is the maximum number of books that any single person could have bought?
(A) 13 (B) 15
I Year – Electronics & Communication Engineering
[email protected], Website: www.engineeringolympiad.in
SPACE FOR ROUGH WORK
Choose a pair that has most similar relationship to the given pair
(B) Despair: Hopeless
(D) Peason: Credible
A, B & C enter into a partnership in the ratio of7 4 6
: :2 3 5
. After 4 months, A increases his share
by 50%. If total profit at the end of one year be Rs.21,600, then B’s share in the profit is
4000 (C) 8000 (D) 9000
In State X, the sales tax on FMCG is equal to 10 percent of the amount of the
. In State Y, the sales tax on FMCG is equal to 8 percent of the entire purchase price.
For what purchase price would the sales tax in both states be equal?
200/- (C) 400/- (D) 500/-
is preferred to have decision making that is than intuitively done. However, a
recent study found that senior managers used intuition significantly more than did most mid
managers. This confirms the alternative view that intuition is actually more effective than careful,
The conclusion above is based on which of the following assumptions?
step reasoning is inappropriate for making many real
Senior managers have the ability to use either intuitive reasoning or deductive, methodical
reasoning in making decisions.
The decisions that are made by mid-level and entry-level managers can be made as easily by using
methodical reasoning as by using intuitive reasoning.
Senior managers are more effective at decision making than are midlevel managers.
50 people attended an exhibition. Out of them, 5 did not buy any book, 20 bought 1 book each, 15
bought 2 books each, and the rest bought at least 3 books. If the average number of books bought per
person was 2, what is the maximum number of books that any single person could have bought?
15 (C) 18 (D) 23
Electronics & Communication Engineering
3 of 13
. After 4 months, A increases his share
by 50%. If total profit at the end of one year be Rs.21,600, then B’s share in the profit is
In State X, the sales tax on FMCG is equal to 10 percent of the amount of the purchase price
. In State Y, the sales tax on FMCG is equal to 8 percent of the entire purchase price.
is preferred to have decision making that is than intuitively done. However, a
recent study found that senior managers used intuition significantly more than did most mid-level
fective than careful,
step reasoning is inappropriate for making many real-life managerial
to use either intuitive reasoning or deductive, methodical
level managers can be made as easily by using
Senior managers are more effective at decision making than are midlevel managers.
50 people attended an exhibition. Out of them, 5 did not buy any book, 20 bought 1 book each, 15
ge number of books bought per
person was 2, what is the maximum number of books that any single person could have bought?
III Year
Email: [email protected]
IEO-2016
Partners & Sponsors:
17. Choose the grammatically incorrect sentence.
(A) The house needs to be painted soon
(B) We urge that he leave now
(C) We have watched him on TV, haven’t we?
(D) Amir decided to buy in the morning a new car, but in the afternoon, he changed his mind
18. Construction of the Roman Colosseum,
began in A.D.69, during the reign of Vespasian
Titus, who opened the Colosseum with a one
games, and spectacles.
(A) which was officially known as t
of Vespasian,
(B) officially known as the Flavian Amphitheater, begun in A.D. 69, during the reign of
Ve-spasian, and
(C) which was officially known as the Flavian Amphitheater, began in A.D.
of Vespasian, and
(D) officially known as the Flavian Amphitheater and begun in A.D. 69, during the
Vespasian it
19. Find out the odd one.
(A) People pray to God during adversity
(B) Rohini wrung her hands when the train
(C) Not everyone bats a hundred in life
(D) One should not succumb to pressure from peers
20. They panicked and........
(A) flew for their lives
(C) fled for their lives
I Year – Electronics & Communication Engineering
[email protected], Website: www.engineeringolympiad.in
SPACE FOR ROUGH WORK
Choose the grammatically incorrect sentence.
The house needs to be painted soon
urge that he leave now
We have watched him on TV, haven’t we?
Amir decided to buy in the morning a new car, but in the afternoon, he changed his mind
Construction of the Roman Colosseum, which was officially known as the Flavian Amphitheater
began in A.D.69, during the reign of Vespasian, was completed a decade later, during the reign of
Titus, who opened the Colosseum with a one-hundred-day cycle of religious pageants, gladiatorial
which was officially known as the Flavian Amphitheater, began in A.D. 69, during the reign
officially known as the Flavian Amphitheater, begun in A.D. 69, during the reign of
which was officially known as the Flavian Amphitheater, began in A.D. 69, during the reign
officially known as the Flavian Amphitheater and begun in A.D. 69, during the
People pray to God during adversity
Rohini wrung her hands when the train was left
Not everyone bats a hundred in life
One should not succumb to pressure from peers
(B) flowed for their lives
(D) fleeing for their lives
Electronics & Communication Engineering
4 of 13
Amir decided to buy in the morning a new car, but in the afternoon, he changed his mind
which was officially known as the Flavian Amphitheater,
, was completed a decade later, during the reign of
day cycle of religious pageants, gladiatorial
he Flavian Amphitheater, began in A.D. 69, during the reign
officially known as the Flavian Amphitheater, begun in A.D. 69, during the reign of
69, during the reign
officially known as the Flavian Amphitheater and begun in A.D. 69, during the reign of
III Year
Email: [email protected]
IEO-2016
Partners & Sponsors:
21. One hundred identical coins, each with probability p of showing up heads are tossed once. If
0<p<1 and the probability of heads showing on 50 coins is equal to that of heads showing on 51
coins, then the value of p is
(A) 1
2 (B)
49
101
22. Consider a uniformly doped silicon transistor with base width of
16 310 / cm . If the collector doping is 7.8×10
Assume r =11.7ε
(A) 38.49 V (B) 56.43 V
23. The h21 parameter of the two port network shown in the figure is
(A) 1
(B) -1
(C) 2
(D) -2
24. Consider the following statements in respect of the Wien
below.
1. For R=1 Kilo Ohm C F, f=1KHz= µ
2. For R=3 Kilo Ohm C F, f=3KHz= µ
Which of the statement given above is /are correct?
(A) 1 only (B) 2 only
(C) 1 and 2 (D) neither 1 nor 2
I Year – Electronics & Communication Engineering
[email protected], Website: www.engineeringolympiad.in
SPACE FOR ROUGH WORK
Section-II: Technical
One hundred identical coins, each with probability p of showing up heads are tossed once. If
0<p<1 and the probability of heads showing on 50 coins is equal to that of heads showing on 51
49
101 (C)
50
101 (D)
51
101
Consider a uniformly doped silicon transistor with base width of 0.6 m &µ
If the collector doping is 7.8×1014
/cm3, then the punch through voltage must be
56.43 V (C) 3.84 V (D) 76.9 V
parameter of the two port network shown in the figure is
Consider the following statements in respect of the Wien-bridge oscillator shown in the figure
1C F, f=1KHz
2
= µ
π
1C F, f=3KHz
18
= µ
π
Which of the statement given above is /are correct?
2 only
neither 1 nor 2
10Ω 20Ω
10Ω22i
+
−
+
−
1V 2V
1i 2i
R1 C
R
C R
Electronics & Communication Engineering
5 of 13
One hundred identical coins, each with probability p of showing up heads are tossed once. If
0<p<1 and the probability of heads showing on 50 coins is equal to that of heads showing on 51
0.6 m & base doping of
, then the punch through voltage must be
76.9 V
bridge oscillator shown in the figure
-
+
+
- V0
R2
III Year
Email: [email protected]
IEO-2016
Partners & Sponsors:
V t
25. Evaluate ( )tan 2x
x4
lim tan xπ
→
(A) 2/e (B) e
26. Which of the function does not satisfy the wave equation?
(A) j (t - 3z)50 e ω (B) sin
27. In the circuit shown below, what is the voltage
(A) 11
dVV
dt+
(B) V1
(C) 11
dVRCV
dt+
(D) 11
dVRC V
dt+
28.
1 6 1
Given a matrix M 1 2 0
0 0 3
=
(A) 1 (B) 2
29. For the circuit shown below, the lower
cross over frequency of the amplifier is
Lf 20Hz= . The transistor parameters are
0r 2k and 150π = β = .The value of C
(A) 0.8 Fµ
(B) 0.28 Fµ
(C) 0.6 Fµ
(D) 1 Fµ
I Year – Electronics & Communication Engineering
[email protected], Website: www.engineeringolympiad.in
SPACE FOR ROUGH WORK
R R R
C C C
+
−
R R R
C C C( )V t
−
( )1V t
a
b
+
−
(C) 1/e (D) e/2
Which of the function does not satisfy the wave equation?
sin ω (10z+5t) (C) Sin x cost (D) cos2 (y+3t)
In the circuit shown below, what is the voltage ( )abV t ?
1 6 1
Given a matrix M 1 2 0
0 0 3
. The largest eigen value is
2 (C) 3 (D) 4
For the circuit shown below, the lower
cross over frequency of the amplifier is
. The transistor parameters are
.The value of CB is
CCV
2R
0.4kER1R
BC
+
−
0.3k
Sv
Electronics & Communication Engineering
6 of 13
)V t
(y+3t)
1.5k
0.4k
1 2R ||R 50k=
III Year
Email: [email protected]
IEO-2016
Partners & Sponsors:
30. For the circuit shown below, the ON time to OFF time ratio for the output pulse is equal to
(A) 1.5
(B) 2.5
(C) 3.5
(D) 4.5
31. A plane wave is reflected at normal incidence from
mV/m, then the value of VSWR is _________.
(A) 2 (B) 3
32. An intrinsic semi-conductor with mass of hole m
temperature T. If the top of the valence band energy is E
energy is Ec, the Fermi energy of the semiconductor is
(A) V CF B
E E 3E K Tln
2 4 m
+= −
(C) V CF B
E E 3E K T ln
2 4 m
+ = +
33. In the above full adder circuit, evaluate the correct operation performed by it.
(A) If C=0, the resultant operation is subtraction
(B) Independent of ‘C’, X always gives difference bit.
(C) If C=1, the resultant operation is subtraction
(D) None of these
I Year – Electronics & Communication Engineering
[email protected], Website: www.engineeringolympiad.in
SPACE FOR ROUGH WORK
For the circuit shown below, the ON time to OFF time ratio for the output pulse is equal to
A plane wave is reflected at normal incidence from boundary surface. If Ei = 10 mV/m and E
mV/m, then the value of VSWR is _________.
3 (C) 4 (D) 5
conductor with mass of hole mh and mass of an electron m
temperature T. If the top of the valence band energy is Ev and the bottom of the conduction band
, the Fermi energy of the semiconductor is
h
e
mE K Tln
2 4 m
(B) ( )B hF v c
K T m3E E E ln
2 4 m
= + +
hF B
e
mE K T ln
2 4 m
(D) ( )B hF V C
K T m3E E E ln
2 4 m
= − +
In the above full adder circuit, evaluate the correct operation performed by it.
If C=0, the resultant operation is subtraction
ent of ‘C’, X always gives difference bit.
If C=1, the resultant operation is subtraction
0.01 Fµ
555 timer
2
4 8
7 3
6
Output
28 k
56 k
0.01 Fµ
CCV
Electronics & Communication Engineering
7 of 13
For the circuit shown below, the ON time to OFF time ratio for the output pulse is equal to
= 10 mV/m and Er = 5
and mass of an electron me is at a finite
and the bottom of the conduction band
B h
e
K T m
2 4 m
B h
e
K T m
2 4 m
F A
B A
C
X Y
III Year
Email: [email protected]
IEO-2016
Partners & Sponsors:
34. The variation of resistance, R ohm, of an aluminum conductor with temperature
dRR, where
d= α α
θ is temperature coefficient of resistance of aluminum.
oGiven that at 0 C, R 24= Ω
(A) 29Ω (B) 39
35. Given signal 2 0 t 2
x(t)0 else where
=
Here ( )t
h t = x0.8
(A) 2.2 (B) 3.8
36. ( ) ( )2
4
cos 2 t 2t+1 dt−
π δ =∫
(A) 1
2 (B) −
37. The ( )i o+ in the following network is
(A) 3.33A
(B) 4.53A
(C) 6.89A
(D) 5.73A
38. Two rectangular waveguides, one air filled with internal dimensions 2cm x 1cm and the other
dielectric filled with internal dimensions 1cm x 0.5cm, have the same cut
dominant mode. The relative permittivity of the dielectric material is __________.
(A) 2 (B) 3
x(t)
I Year – Electronics & Communication Engineering
[email protected], Website: www.engineeringolympiad.in
SPACE FOR ROUGH WORK
The variation of resistance, R ohm, of an aluminum conductor with temperature
is temperature coefficient of resistance of aluminum.
Given that at 0 C, R 24= Ω and 4 o38 10 / C−α = ×
then resistance at o50 will be
39Ω (C) 19Ω (D) 9Ω
2 0 t 2
0 else where
≤ ≤. The magnitude of output at t=1.8 sec is _________.
3.8 (C) 4.4 (D) 6.4
1
2− (C) 1 (D) -1
in the following network is
Two rectangular waveguides, one air filled with internal dimensions 2cm x 1cm and the other
dielectric filled with internal dimensions 1cm x 0.5cm, have the same cut-off frequency for the
dominant mode. The relative permittivity of the dielectric material is __________.
3 (C) 4 (D) 5
( )h ty(t)
x(t)
i
1Ω
1Ω 1Η
2H
+−
t 0=
10V
Electronics & Communication Engineering
8 of 13
The variation of resistance, R ohm, of an aluminum conductor with temperature oCθ is given by
is temperature coefficient of resistance of aluminum.
will be
. The magnitude of output at t=1.8 sec is _________.
Two rectangular waveguides, one air filled with internal dimensions 2cm x 1cm and the other
off frequency for the
dominant mode. The relative permittivity of the dielectric material is __________.
III Year
Email: [email protected]
IEO-2016
Partners & Sponsors:
39. Consider the diagram shown below where x
kHz and sampling frequency is to be chosen twice of Nyquist rate.
The sampling frequency of y
(A) 25 (B) 36
40. The energy band diagram for sample shown below is
P type
(A)
(C)
2x (t)
1x (2t)
FPE
EiE
CE
FPE
vE
I Year – Electronics & Communication Engineering
[email protected], Website: www.engineeringolympiad.in
SPACE FOR ROUGH WORK
Consider the diagram shown below where x1(t) is band limited to 4 kHz, x2(t) is
Hz and sampling frequency is to be chosen twice of Nyquist rate.
The sampling frequency of y3(t) is _________kHz.
36 (C) 56 (D) 75
The energy band diagram for sample shown below is
Intrinsic N type
(B)
(D)
X
1x (t)
unit
delay1y (t)
∑
+
+
2y (t)
3y (t)
pEF 1EF
FNE
FPE
FiE
FnE
Electronics & Communication Engineering
9 of 13
(t) is band limited to 6
nEF
FNE
III Year
Email: [email protected]
IEO-2016
Partners & Sponsors:
41. A two bit comparator with a set of timing diagrams are given below. Identify the correct
timing diagram.
(A)
(C)
42. Consider the system of equations
parameter ‘ λ ’ such that the system
(A) -3.5 (B) 3.5
43. The driving point impedance of the network shown in figure is given by
( )2
s 3Z s
2s 6s 1
+=
+ +. The values of the components are
(A) R 3 , L=1H, C=2F= Ω
(C) R 3 , L=0.5H, C=4F= Ω
Comp
0x
1x
0y
1y
01 2
3
01 2
I Year – Electronics & Communication Engineering
[email protected], Website: www.engineeringolympiad.in
SPACE FOR ROUGH WORK
A two bit comparator with a set of timing diagrams are given below. Identify the correct
(B)
(D)
Consider the system of equations3x y z 1; 2x+y+z=2; x+2y- z=-1− + λ = λ
such that the system fail to have unique solution is ___________
3.5 (C) 1.5 (D) -1.5
The driving point impedance of the network shown in figure is given by
. The values of the components are
(B) R 3 , L=2H, C=1F= Ω
R 3 , L=0.5H, C=4F (D) R 3 , L=4H, C=0.5F= Ω
(X Y)=
4
3 4
0 1
2
3
0x
1x
0y
1y
10 2 3
0 1 2 3
(Z s
Electronics & Communication Engineering
10 of 13
A two bit comparator with a set of timing diagrams are given below. Identify the correct output
3x y z 1; 2x+y+z=2; x+2y- z=-1 , the value of the
solution is ___________.
4
4
4
C
R
L)Z s
III Year
Email: [email protected]
IEO-2016
Partners & Sponsors:
44. Figure below shows a section of a Programmable Logic Device (PLD). The Boolean expression
implemented in the PLD is
(A) AC AB ABC+ +
(B) AC AB ABC+ +
(C) AB AC ABC+ +
(D) AB AC ABC+ +
45. A pn junction is reverse biased by 6 volts with
that the junction has cross sectional area of
10 3
i rGiven n 1.5 10 / cm 11.7= × ε =
(A) 2.5pF (B) 3.5pF
46. The Eur
field of a plane electromagnetic wave is given by
corresponding magnetic field is
(A) (0kEB j cos t kz
= ω +
ω
ur$
(C) (okEB j cos t kz
= − ω +
ω
ur$
47. The Fourier transform of x(t) te sin t u(t)
(A) [ ] [
2 2
1 1
2 2 j( 1) 2 j( 1)
ω−
+ ω − + ω +
(C) [ ] [
2 2
1 1
2 2 j( 1) 2 j( 1)
ω −−
+ ω − + ω +
I Year – Electronics & Communication Engineering
[email protected], Website: www.engineeringolympiad.in
SPACE FOR ROUGH WORK
Figure below shows a section of a Programmable Logic Device (PLD). The Boolean expression
A pn junction is reverse biased by 6 volts with 17 3
aN 7 10 / cm= × 17 3
D& N 10 / cm .=
that the junction has cross sectional area of 4 22 10 cm−× the junction capacitance must be
10 3
i rGiven n 1.5 10 / cm 11.7= × ε =
3.5pF (C) 5.5pF (D) 6.5pF
field of a plane electromagnetic wave is given by oE i E cos t kz= ω +ur
$
corresponding magnetic field is given by
)B j cos t kz (B) ( )okEB j sin t kz
= − ω +
ω
ur$
)B j cos t kz= − ω + (D) ( )okEB j cos t kz
= − ω −
ω
ur$
2tdx(t) te sin t u(t)
dt
− = is given by
]2 2
1 1
2 j( 1) 2 j( 1)
+ ω − + ω + (B)
[ ] [2 2
1 1
2 j( 1) 2 j( 1)
ω +
+ ω + + ω −
]2 2
1 1
2 j( 1) 2 j( 1)
+ ω − + ω + (D) None of these
B
A
C
Electronics & Communication Engineering
11 of 13
Figure below shows a section of a Programmable Logic Device (PLD). The Boolean expression
17 3& N 10 / cm . Assuming
the junction capacitance must be
( )E i E cos t kz= ω + . The
]2 2
2 j( 1) 2 j( 1)
+ ω + + ω −
Y
III Year
Email: [email protected]
IEO-2016
Partners & Sponsors:
48. A divide by N-counter is designed using JK flip
A, B, C as 000)
The output of the above counter is given to the circuit shown below, which consists of 3
line decoder and LEDs.
The LEDs that will never glow are
(A) 0 7D and D (B) D and D
J
K
Q
Q
CLK
3x8 Decoder
0O
1O
2O
3O
4O
5O
6O
7O
A
B
C
0A1A2A
I Year – Electronics & Communication Engineering
[email protected], Website: www.engineeringolympiad.in
SPACE FOR ROUGH WORK
counter is designed using JK flip-flops as shown in the figure. (Assuming initially
The output of the above counter is given to the circuit shown below, which consists of 3
never glow are
0 1D and D (C) 2 5D and D (D)
5 7D and D
Q
Q
J
K
Q
Q
J
K
Q
Q
A B C
5V+
0D1D 2D 3D 4D 5D 6D 7D
Electronics & Communication Engineering
12 of 13
flops as shown in the figure. (Assuming initially
The output of the above counter is given to the circuit shown below, which consists of 3-line to 8-
5 7D and D
C
7D
III Year
Email: [email protected]
IEO-2016
Partners & Sponsors:
49. In the circuit shown, Vo will be zero at the frequency of
(A) 1
HzRC
(B) 2
RC
50. When an input voltage Vi of the form shown, is applied to the circuit given below with the diode
practical with forward resistance
(A)
(C)
12V−
12V
12V
0V
12V
2.3V
0V
I Year – Electronics & Communication Engineering
[email protected], Website: www.engineeringolympiad.in
SPACE FOR ROUGH WORK
will be zero at the frequency of
2Hz
RC
π (C)
1Hz
2 RCπ (D)
RCHz
2π
of the form shown, is applied to the circuit given below with the diode
resistancefR =0 , the output voltage Vo is of the form
(B)
(D)
12V
R
oViV
3V
D
t t
12V
3V
t
t0V
12V−
RR
C
CRR
2
oV
−+V
Electronics & Communication Engineering
13 of 13
Hz
of the form shown, is applied to the circuit given below with the diode