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GATE Electronics and Communication Online Test Paper 3

Test Name GATE Electronics and Communication Online Test Paper
Subject GATE
Test Type MCQs
Total Question 40
Total Marks 80
Total Time 40 Minutes
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GATE aspirant of Electronics and Communication engineering would be aware of its syllabus. However, proper preparation before the exam can get a good rank in the examination. For the GATE test more effectively result it’s important that Testing the level of preparation by solving the previous GATE questions and attempting quizzes online tests are most helpful for your knowledge. So take GATE ECE papers test mcqs and test your qualification.

GATE Electronics and Communication Online Test Paper 3


1. The energy stored in the magnetic field of a solenoid 30 cm long and 3 cm diameter wound with 1000 turns of a wire carrying a current of 10 A is:

Question 1 of 40

2. Microprogramming is used in the design of:

Question 2 of 40

3. The number of roots s3 + 5s2 + 7s + 3 = in the left half of the s-plane is:

Question 3 of 40

4. Function 3s/(s+1)(s+2)  has:

Question 4 of 40

5. The junction capacitance of a varactor diode is 5pF with a verse bias of 4V. If this bias is increase to 16V, the capacitance would become

Question 5 of 40

6. The octal value 710 can be written in hexadecimal as:

Question 6 of 40

7. In one time constant, the current in a circuit reactive

Question 7 of 40

The Z-transformer of the time function ∑  δ (n-k) is

Question 8 of 40

9. In the given circuit, P is the power dissipated in R2. The total power dissipated in the circuit is:

Question 9 of 40

10. The greatest negative number which can be stored in computer that has 8-bit work length and uses '2' S complement arithmetic is:

Question 10 of 40

11. The spectral density of a real valued random process has:

Question 11 of 40

12. A 50Ω transmission line is terminated in a lead impedance of (50 + j 100)Ω. The normalised load impedance is

Question 12 of 40

13. Inside a hallow conducting sphere

Question 13 of 40

14. A transmission line is terminated in a certain load resistance which causes 30% of the incident power to be reflected from the load. The load end VSWR is:

Question 14 of 40

15. Inverse Laplace transform of 10/s(s+1) is:

Question 15 of 40

16. The number 3.14159265 when truncated to five figure, would be

Question 16 of 40

17. If V, w, q stand for voltage, energy and charge, then V can be expressed as:

Question 17 of 40

18. Schottky clamping is stored to in TTL gates

Question 18 of 40

19. The transfer function Y12(s) = l2(s)l1(s) for the network shown in the figure is:
(a) s2/s2 + s + 1
(b) s/s+1
(c) 1/s+1
(d) s+1/s2+1

Question 19 of 40

20. The velocity factor of a transmission line is 0.8. Electromagnetic waves travel down this line with a velocity of:

Question 20 of 40

21. A lossless transmission line is terminated in a miss matched load. If the normalised load impedance is (3+j4)Ω, the reflection coefficient is:

Question 21 of 40

22. In a PCM system with uniform quantization increasing the number of bits from 8 to 9 will reduce the quantization noise power by a factor of:

Question 22 of 40

23. The error response of a second order system a step input is obtained as:
E(t) = 1.66 e-st sin (6 t + 370)
The damping ratio is:

Question 23 of 40

24. The driving point impedance function for the network shown in the figure has:

Question 24 of 40

25. The first two rows of Routh's tabulation of a four order system are:
S4      1      10       5
S3      2      10
The number of roots of the system in lying on the right half of s-plane is:

Question 25 of 40

26. The current transfer ratio l2(s)/l1(s) for the circuit shown in the figure is:

Question 26 of 40

27. What is the value of i (0+) and di/dt (0+) in the following ckt

Question 27 of 40

28. The circuit shown in figure is that of:

Question 28 of 40

29. The amplitude spectrum of a gaussian pulse is:

Question 29 of 40

30. The probability density function of the envelop of narrow band Gassian noise is:

Question 30 of 40

31. Flat top sampling of low pars sign

Question 31 of 40

32. The transfer function of techometer is of the form:

Question 32 of 40

33. Cache memory i logically positioned:

Question 33 of 40

34. The concentric spherical cells of a radii R1, R2, R3 (R< R2< R3) carry charges -1, -2 and 4 coulombs, respectively. The chrge in coulombs on the inner and outer surfaces respectively, of outermost shell is:

Question 34 of 40

35. A retriggerable monoshot is one which

Question 35 of 40

36. Which of the following parts of the computer
L = Arithmetic logic unit
M = Memory
C = Control unit
required decoder (S) in their realization?

Question 36 of 40

37. The driving point admittance function of the network shown in the figure has a:

Question 37 of 40

38. The Fourier transform of a voltage signal x(t) is x(f). The unit of x(f) is:

Question 38 of 40

39. The static characteristic of an adequately forward biased p-n junction is a straight line, if the plot is of:

Question 39 of 40

40. The step error coefficient of a system
G(s) = 1/(s+6)(s+1)
with the unity feed back is

Question 40 of 40


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