GATE ECE Previous year papers

Will you please give me question paper for GATE electronics and communication engineering examination ?

[Quick Sam]

Here I am giving you question paper for GATE electronics and communication engineering examination.

Q.1 A bulb in a staircase has two switches, one switch being at the ground floor and the other one at the
first floor. The bulb can be turned ON and also can be turned OFF by any one of the switches
irrespective of the state of the other switch. The logic of switching of the bulb resembles
(A) an AND gate (B) an OR gate (C) an XOR gate (D) a NAND gate

Q.3 Two systems with impulse responses 1( ) h t and 2 ( ) h t are connected in cascade. Then the overall
impulse response of the cascaded system is given by
(A) product of 1( ) h t and 2 ( ) h t
(B) sum of 1( ) h t and 2 ( ) h t
(C) convolution of 1( ) h t and 2 ( ) h t
(D) subtraction of 2 ( ) h t from 1( ) h t

Q.4 In a forward biased pn junction diode, the sequence of events that best describes the mechanism of
current flow is
(A) injection, and subsequent diffusion and recombination of minority carriers
(B) injection, and subsequent drift and generation of minority carriers
(C) extraction, and subsequent diffusion and generation of minority carriers
(D) extraction, and subsequent drift and recombination of minority carriers

Q.5 In IC technology, dry oxidation (using dry oxygen) as compared to wet oxidation (using steam or
water vapor) produces
(A) superior quality oxide with a higher growth rate
(B) inferior quality oxide with a higher growth rate
(C) inferior quality oxide with a lower growth rate
(D) superior quality oxide with a lower growth rate
Q.6 The maximum value of q until which the approximation sin q q » holds to within 10% error is
(A) 10° (B) 18° (C) 50° (D) 90°

Q.10 In the circuit shown below what is the output voltage (Vout) if a silicon transistor Q and an ideal
op-amp are used?

Q.11 Consider a delta connection of resistors and its equivalent star connection as shown below. If all
elements of the delta connection are scaled by a factor k, k> 0, the elements of the corresponding
star equivalent will be scaled by a factor of
RB RC
Rb
Ra
Rc
RA
(A) k2 (B) k (C) 1/k (D) k
Q.12 For 8085 microprocessor, the following program is executed.
MVI A, 05H;
MVI B, 05H;
PTR: ADD B;
DCR B;
JNZ PTR;
ADI 03H;
HLT;
At the end of program, accumulator contains
(A) 17H (B) 20H (C) 23H (D) 05H
GATE ECE paper





in a file attached with it

Hello Sir, I am preparing for the GATE exam and I need to question paper to practice for the questions. Will you please forward me previous year question paper of the GATE ECE exam so I can practice for the questions?

[Arun Vats]

As per your need, I am giving you some questions form the GATE Electronics and communication engineering (ECE) previous year question paper. I hope that questions will help you.

Choose the word most similar in meaning to the given word:
Educe
(A) Exert
(B) Educate
(C) Extract
(D) Extend

Humpty Dumpty sits on a wall every day while having lunch. The wall sometimes breaks. A person sitting on the wall falls if the wall breaks. Which one of the statements below is logically valid and can be inferred from the above
sentences?
(A) Humpty Dumpty always falls while having lunch
(B) Humpty Dumpty does not fall sometimes while having lunch
(C) Humpty Dumpty never falls during dinner
(D) When Humpty Dumpty does not sit on the wall, the wall does not break
Answer: (B)

Negative feedback in a closed - loop control system DOES NOT
(A) reduce the overall gain
(B) reduce bandwidth
(C) improve disturbance rejection
(D) reduce sensitivity to parameter variation

A region of negative differential resistance is observed in the current voltage characteristics of a silicon PN junction if
(A) Both the P - region and the N - region are heavily doped
(B) The N - region is heavily doped compared to the P - region
(C) The P - region is heavily doped compared to the N - region
(D) An intrinsic silicon region is inserted between the P - region and the N - region
Answer:
(A)

Read the following paragraph and choose the correct statement.Climate change has reduced human security and threatened human well being. An ignored
reality of human progress is that human security largely depends upon environmental security. But on the contrary, human progress seems contradictory to environment
al security. To keep up both at the required level is a challenge to be addressed by one and all. One of the ways to curb the climate change may be suitable scientific innovations, while the other may
be the Gandhian perspective on small scale progress with focus on sustainability.
(A) Human progress and security are positively associated with environmental security.
(B) Human progress is contradictory to environmental security.
(C) Human security is contradictory to environmental security.
(D) Human
progress depends upon environmental security.
Answer:
(B)

10. Read the following paragraph and choose the correct statement. Climate change has reduced human security and threatened human well being. An ignored reality of human progress is that human security largely depends upon environmental security. But on the contrary, human progress seems contradictory to environmental security. To keep up both at the required level is a challenge to be addressed by one and all. One of the ways to curb the climate change may be suitable scientific innovations, while the other may be the Gandhian perspective on small scale progress with focus on sustainability.
(A) Human progress and security are positively associated with environmental security.
(B) Human progress is contradictory to environmental security.
(C) Human security is contradictory to environmental security.
(D) Human progress depends upon environmental security.
Answer: (B)


9. The following question presents a sentence, part of which is underlined. Beneath the sentence you find four ways of phrasing the underline part. Following the requirements of the standard written English, select the answer that produces the most effective sentence. Tuberculosis, together with its effects, ranks one of the leading causes of death in India.
(A) ranks as one of the leading causes of death
(B) rank as one of the leading causes of death
(C) has the rank of one of the leading causes of death
(D) are one of the leading causes of death
Answer: (A)


8. Humpty Dumpty sits on a wall every day while having lunch. The wall sometimes breaks. A person sitting on the wall falls if the wall breaks. Which one of the statements below is logically valid and can be inferred from the above sentences?
(A) Humpty Dumpty always falls while having lunch
(B) Humpty Dumpty does not fall sometimes while having lunch
(C) Humpty Dumpty never falls during dinner
(D) When Humpty Dumpty does not sit on the wall, the wall does not break
Answer: (B)

1. A region of negative differential resistance is observed in the current voltage characteristics of a silicon PN junction if
(A) Both the P-region and the N-region are heavily doped
(B) The N-region is heavily doped compared to the P-region
(C) The P-region is heavily doped compared to the N-region
(D) An intrinsic silicon region is inserted between the P-region and the N-region
Answer: (A)


8. The polar plot of the transfer function 10s1Gsfor0s10will be in the
(A) first quadrant
(B) second quadrant
(C) third quadrant
(D) fourth quadrant
Answer: (A)


10. Consider the signal ccˆˆstmtcos2ftmt2ftwheremtdenot es the Hilbert transform of m(t) and the bandwidth of m(t) is very small compared to cf. The signal s(t) is a
(A) high-pass signal
(B) low-pass signal
(C) band-pass signal
(D) double sideband suppressed carrier signal
Answer: (C)


16. Negative feedback in a closed-loop control system DOES NOT
(A) reduce the overall gain
(B) reduce bandwidth
(C) improve disturbance rejection
(D) reduce sensitivity to parameter variation
Answer: (B)

For complete question paper download the attachment.