Please provide me question paper for GATE electronics and communication engineering examination ?

Here I am giving you question paper for GATE electronics and communication engineering examination in PDF file attached with it .

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
Answer: (C)

3. Two systems with impulse responses ( ) ( ) 1 2 h t and h t are connected in cascade.
Then the overall impulse response of the cascaded system is given by
(A) Product of ( ) ( ) 1 2 h t and h t
(B) Sum of ( ) ( ) 1 2 h t and h t
(C) Convolution of ( ) ( ) 1 2 h t and h t
(D) Subtraction of ( ) ( ) 2 1 h t from h t
Answer: (C

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
Answer: (A)

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
Answer: (D)

13. The bit rate of a digital communication system is R kbits/s. The modulation used is
32-QAM. The minimum bandwidth required for ISI free transmission is
(A) R/10 Hz (B) R/10 kHz (C) R/5 Hz (D) R/5 kHz
Answer: (B)

Attached Files

GATE ECE Solved Question Papers.pdf (326.3 KB, 52 views)