DO NOT OPEN THIS TEST BOOKLET UNTIL YOU ARE TOLD TO DOSO
T.B.C. :EDCM-A-GATC Test Booklet Series
Serial No.
0003686
TEST BOOKLET
GAT-DCIO B
Tüme Allowed : Two Hours Maximum Marks -; 300
INSTRUCTIONS
1. IMMEDIATELY AFTER THE COMMENCEMENT OF THE EXAMINATION, YOU SHOULD
CHECK THAT THIS TEST BOOKLET DOES NOT HAVE ANY UNPRINTED OR TORN OR
MISSING PAGES OR ITEMS, ETC. IF SO, GET IT REPLACED BY A COMPLETE TEST
BOOKLET.
2. Please note that it is the candidate's responsibility to encode and fill in the Roll Number and
Test Booklet Series Code A, B, C or D carefully and without any omission or discrepancy at
the appropriate places in the OMR Answer Sheet. Any omission/discrepancy will render the
Answer Sheet liable for rejection.
3. You have to enter your Roll Number on the Test
Booklet in the Box provided alongside. DO NOT
write anything else on the Test Booklet.
4. This Test Booklet contains 100 items (questions): Each item comprises four responses (answers).
You will select the response which you want to mark on the Answer Sheet. In case, you feel that
there is more than one correct response, mark the response which you consider the best. In any
case, choose ONLY ONE response for each item.
5. You have to mark your responses ONLY on the separate Answer Sheet provided. See directions in
the Answer Sheet.
6. All items carry equal marks.
7. Before you proceed to mark in the Answer Sheet the response to various items in the Test Booklet,
you have to fill in some particulars in the Answer Sheet as per instructions sent to you with your
Admission Certificate.
8. Afer you have completed filling in all your responses on the Answer Sheet and the examination has
concluded, you should hand over to the Invigilator only the Answer Sheet. You are permitted to take
away with you the Test Booklet.
9. Sheets for rough work are appended in the Test Booklet at the end.
10. Penalty for,wrong Answers :
THERE WILL BE PENALTY FOR WRONG ANSWERS MARKED BYA CANDIDATE,
i) There are four alternatives for the answer to every question. For each question for whìch
a wrong answer has been given by the candidate, one-third of the marks assigned to that
question will be deducted as penalty.
(1) Ifa candidate gives more than one answer, it will be treated as wrong answer even if one
of the given answers happens to be correct and there will be same penalty as above to that
question.
(i) If a question is left blank, i.e., no answer is given by the candidate, there will be no penalty
for that question.
DO NOT OPEN THIS TEST B00KLET UNTIL YOU ARE TOLD TO DO SO
, correction code
detection and
1. Consider the following statemcnts 3. Error correction plus
provides 7 crror
regarding VIcharacteristics of a diode : detcction of 's' additional
errors if and
the following
1. Reverse saturation current in a only if which one of the code is
gemanium diode is normally incquality is satisficd
(if
'd,min ') ?
larger by a factor of about 100 having minimum distance
than the reverse saturation current
(a) + s +1<dun
in a silicon diode of comparable
ratings. , (b) 21 + s + 1< dmtn
(c) t +s- 1<dmin
2. In gemanium diode, belowbrcak (d) 21 +s- 1< dmin
point voltage, the current is less
than 1 percent of maximum rated statements
4. Consider the following
value. regarding counters:
will
Which of the above statements is/are 1. An n-stage Johnson counter
produce a modulus of 2x n,
correct?
where n is the number of stages
(a) 1 only in the counter.
2. Ring counter is referred to as a
Vb) 2 only divided-by-N-counter or an N:1
(c) Both 1 and 2 scalar.
Which of the above statements is/are
(d) Neither 1 nor 2 correct ?
(a) 1 only
2. Consider the following statements (b) 2 only
regarding diodes :
"(c) Both 1 and 2
Jl. Reverse saturation current ap (d) Neither 1 nor 2
proximately doubles for every
10°C rise in temperature. 5. Assume k parity bits p1: P2 Pk are
added to the n-bit message to form an
J2. Dynamic resistance depends upon (2+ ) bit code. The value of kmust be
the operating voltage. chosen in such a way so as to be able
to describe the location of any of the
Which of the above statements is/are n+k possible error bit locations and
correct ?
also "no error condition. On which
(a) 1 only one of the following conditions, k must
satisfy the inequality ?
(b) 2 only (a) n-k+1>2k
(c) Both 1and 2 (b) n- k+1<2k
(c) 2>n+k+1
(d) Neither 1 nor 2 (d) 2k<n +k+1
EDCM-A-GATC- B 2
, 6. By using Hamming code, how many 9. [A()ldt<o represents
number of parity bits 'must be
appended to the code to make it an (a) Causality property of the impulse
error-correcting code ? (The parity response representation for LTI
bits P P2> .sy P are placed in system
locations 1, 2, 4, .., 2k-)
(b) Stability property of the impulse
(a) 2 response representation for LTI
system
(6) 3
(c) Invertibility property of the
" (c) 4 impulse response representation
for LTI system
(@) s
(d) Memoryless property of the
impulse response representation
7.Simplify the following expression for LTI system
using Boolean Theorems:
(B+ BCXB+BC)(B +D) 10: Consider the following statements
regarding BIBO stability :
(a) B
1. An LTI system is stable if and
(b) B+C only if the ROC of_its transfer
function includes the jo-axis.
(c) B(C+ D)
2. A causal LTI differential system
(d) BC is stable if and only if the poles
of its transfer function all lie
in the right half-plane. There
8. Simplify the following expression
using Karnaugh map : is no pole-zero cancellation in
the closed right half-plane when
f4, B, C, D) = E(0, 1, 4, 5, 9, 11, 14, Hs) = n(s) /d(s) is formed.
15) + d(2, 10, 13) is
Which of the above statements is/are
Correct ?
(a) 1C+CD+ AC
-(a) 1only
(6) AC+CD + BC(D+ AC)
(b) 2 only
(c).AC + CD+ AD +AC . (c) Both 1 and 2
(a) CD+ AD+ AC (d) Neither 1 nor 2
3 B EDCM-A-GATC
T.B.C. :EDCM-A-GATC Test Booklet Series
Serial No.
0003686
TEST BOOKLET
GAT-DCIO B
Tüme Allowed : Two Hours Maximum Marks -; 300
INSTRUCTIONS
1. IMMEDIATELY AFTER THE COMMENCEMENT OF THE EXAMINATION, YOU SHOULD
CHECK THAT THIS TEST BOOKLET DOES NOT HAVE ANY UNPRINTED OR TORN OR
MISSING PAGES OR ITEMS, ETC. IF SO, GET IT REPLACED BY A COMPLETE TEST
BOOKLET.
2. Please note that it is the candidate's responsibility to encode and fill in the Roll Number and
Test Booklet Series Code A, B, C or D carefully and without any omission or discrepancy at
the appropriate places in the OMR Answer Sheet. Any omission/discrepancy will render the
Answer Sheet liable for rejection.
3. You have to enter your Roll Number on the Test
Booklet in the Box provided alongside. DO NOT
write anything else on the Test Booklet.
4. This Test Booklet contains 100 items (questions): Each item comprises four responses (answers).
You will select the response which you want to mark on the Answer Sheet. In case, you feel that
there is more than one correct response, mark the response which you consider the best. In any
case, choose ONLY ONE response for each item.
5. You have to mark your responses ONLY on the separate Answer Sheet provided. See directions in
the Answer Sheet.
6. All items carry equal marks.
7. Before you proceed to mark in the Answer Sheet the response to various items in the Test Booklet,
you have to fill in some particulars in the Answer Sheet as per instructions sent to you with your
Admission Certificate.
8. Afer you have completed filling in all your responses on the Answer Sheet and the examination has
concluded, you should hand over to the Invigilator only the Answer Sheet. You are permitted to take
away with you the Test Booklet.
9. Sheets for rough work are appended in the Test Booklet at the end.
10. Penalty for,wrong Answers :
THERE WILL BE PENALTY FOR WRONG ANSWERS MARKED BYA CANDIDATE,
i) There are four alternatives for the answer to every question. For each question for whìch
a wrong answer has been given by the candidate, one-third of the marks assigned to that
question will be deducted as penalty.
(1) Ifa candidate gives more than one answer, it will be treated as wrong answer even if one
of the given answers happens to be correct and there will be same penalty as above to that
question.
(i) If a question is left blank, i.e., no answer is given by the candidate, there will be no penalty
for that question.
DO NOT OPEN THIS TEST B00KLET UNTIL YOU ARE TOLD TO DO SO
, correction code
detection and
1. Consider the following statemcnts 3. Error correction plus
provides 7 crror
regarding VIcharacteristics of a diode : detcction of 's' additional
errors if and
the following
1. Reverse saturation current in a only if which one of the code is
gemanium diode is normally incquality is satisficd
(if
'd,min ') ?
larger by a factor of about 100 having minimum distance
than the reverse saturation current
(a) + s +1<dun
in a silicon diode of comparable
ratings. , (b) 21 + s + 1< dmtn
(c) t +s- 1<dmin
2. In gemanium diode, belowbrcak (d) 21 +s- 1< dmin
point voltage, the current is less
than 1 percent of maximum rated statements
4. Consider the following
value. regarding counters:
will
Which of the above statements is/are 1. An n-stage Johnson counter
produce a modulus of 2x n,
correct?
where n is the number of stages
(a) 1 only in the counter.
2. Ring counter is referred to as a
Vb) 2 only divided-by-N-counter or an N:1
(c) Both 1 and 2 scalar.
Which of the above statements is/are
(d) Neither 1 nor 2 correct ?
(a) 1 only
2. Consider the following statements (b) 2 only
regarding diodes :
"(c) Both 1 and 2
Jl. Reverse saturation current ap (d) Neither 1 nor 2
proximately doubles for every
10°C rise in temperature. 5. Assume k parity bits p1: P2 Pk are
added to the n-bit message to form an
J2. Dynamic resistance depends upon (2+ ) bit code. The value of kmust be
the operating voltage. chosen in such a way so as to be able
to describe the location of any of the
Which of the above statements is/are n+k possible error bit locations and
correct ?
also "no error condition. On which
(a) 1 only one of the following conditions, k must
satisfy the inequality ?
(b) 2 only (a) n-k+1>2k
(c) Both 1and 2 (b) n- k+1<2k
(c) 2>n+k+1
(d) Neither 1 nor 2 (d) 2k<n +k+1
EDCM-A-GATC- B 2
, 6. By using Hamming code, how many 9. [A()ldt<o represents
number of parity bits 'must be
appended to the code to make it an (a) Causality property of the impulse
error-correcting code ? (The parity response representation for LTI
bits P P2> .sy P are placed in system
locations 1, 2, 4, .., 2k-)
(b) Stability property of the impulse
(a) 2 response representation for LTI
system
(6) 3
(c) Invertibility property of the
" (c) 4 impulse response representation
for LTI system
(@) s
(d) Memoryless property of the
impulse response representation
7.Simplify the following expression for LTI system
using Boolean Theorems:
(B+ BCXB+BC)(B +D) 10: Consider the following statements
regarding BIBO stability :
(a) B
1. An LTI system is stable if and
(b) B+C only if the ROC of_its transfer
function includes the jo-axis.
(c) B(C+ D)
2. A causal LTI differential system
(d) BC is stable if and only if the poles
of its transfer function all lie
in the right half-plane. There
8. Simplify the following expression
using Karnaugh map : is no pole-zero cancellation in
the closed right half-plane when
f4, B, C, D) = E(0, 1, 4, 5, 9, 11, 14, Hs) = n(s) /d(s) is formed.
15) + d(2, 10, 13) is
Which of the above statements is/are
Correct ?
(a) 1C+CD+ AC
-(a) 1only
(6) AC+CD + BC(D+ AC)
(b) 2 only
(c).AC + CD+ AD +AC . (c) Both 1 and 2
(a) CD+ AD+ AC (d) Neither 1 nor 2
3 B EDCM-A-GATC
