GATE ECE Practice Paper 2 Questions And Answers
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ECE Practice Paper 2 Questions & Answers
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
ECE Practice Paper 2 Questions & Answers
2. Consider a vector field . The closed loop line integral can be expressed as
ECE Practice Paper 2 Questions & Answers
3. Two systems with impulse responses h1 (t) and h2 (t) are connected in cascade. Then the overall impulse response of the cascaded system is given by
ECE Practice Paper 2 Questions & Answers
4. In a forward biased pn junction diode, the sequence of events that best describes the mechanism of current flow is
ECE Practice Paper 2 Questions & Answers
5. In IC technology, dry oxidation (using dry oxygen) as compared to wet oxidation (using steam or water vapor) produces
ECE Practice Paper 2 Questions & Answers
6. The maximum value of ? until which the approximation sin? ˜ ? holds to within 10% error is
ECE Practice Paper 2 Questions & Answers
7. The divergence of the vector field ? = xâx + yây + zâz is
ECE Practice Paper 2 Questions & Answers
8. The impulse response of a system is h(t) = t u(t) . For an input u(t -1) , the output is
ECE Practice Paper 2 Questions & Answers
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
ECE Practice Paper 2 Questions & Answers
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
. The closed loop line integral 
can be expressed as 
over the closed surface bounded by the loop
over the closed volume bounded by the loop
over the open volume bounded by the loop
over the open surface bounded by the loop