GATE Electronics And Communication Test 5 Question Answer Online
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# GATE Electronics and Communication Test 5 Question Answer Online

 Test Name GATE Electronics and Communication Test Subject GATE Test Type MCQs Total Question 40 Total Marks 80 Total Time 40 Minutes Test Help For M.Tech Admissions Government Jobs Post-Graduate Engineering Admissions Engineering Jobs

Graduate Aptitude Test in Engineering, GATE test organized for various examination on undergraduate subjects in engineering and science exams. Electronics and Communication engineering which include of electronic devices, circuits, communication equipment related transmitter, receiver, and integrated circuits. GATE mock test is one of the most competitive examinations in India. For preparation through recent syllabus pattern about Entry test, Jobs test, Admissions test and interviews on concept of Electronics and Communications Engineering test are following.

## GATE

1. In the circuit shown, all the transmission line sections are lossless. The Voltage Standing Wave Ratio (VSWR) on the 60Ω line is Question 1 of 40

2. Which of the following options is the closest in meaning of the word below:
Circuitous

Question 2 of 40

3. For the asymptotic Bode magnitude plot shown below, the system transfer function can be Question 3 of 40

4. If the scattering matrix [S] of a two port network is
[S] = [0.2∠0º          0.9∠90º]
0.9∠90º         0.1∠90º
then the matrix is:

Question 4 of 40

5. A continuous time LTI system is described by
dy(t)/dt + 4dy(t/dt) + 3y(t) = 2 dx(t)/dt + 4x(t)
Assuming zero initial conditions. the response y(t)of the above system for the input
x(t) = e-2t u(t) is given by

Question 5 of 40

6. Given digits 2, 2, 3, 3, 4, 4, 4, 4 how many distinct 4 digit numbers greater than 3000 can be formed?

Question 6 of 40

7. The Nyquist sampling rate for the signal s(t) = sin(500πt)/πt  x  sin(700πt)/πt  is given by:

Question 7 of 40

8. Consider the z-transform
X(z) = 5z2 + 4z-1 + 3; 0 < |z| < ∞
The inverse transform x[n] is:

Question 8 of 40

9. In a uniformly doped BJT, assume that NE, NB and NC are the emitter, base and collector dopings in atoms/cm3 , respectively. If the emitter injection efficiency of the BJT is close to unity, which one of the following conditions is TRUE?

Question 9 of 40

10. Compared to a p-n junction with NA = ND = 10/cm, which one of the following statements is TRUE for a p-n junction with NA = ND 1020/cm3?

Question 10 of 40

11. For the 8085 assembly language program given below, the content of the accumulator after the execution of the program is:
3000     MVI          A, 45H
3002     MOV         B, A
3003     STC
3004     CMC
3005     RAR
3006     XRA         B

Question 11 of 40

12. Choose the most appropriate word from the options given below to complete the following sentence:
His rather casual remarks on politics ................ his lack of seriousness about the subject.

Question 12 of 40

13. A transmission line has a characteristic impedance of 50Ω and a resistance of 0.1Ω m. If the line is distortionless, the attenuation constant (in Np/m) is:

Question 13 of 40

14. For an N-point FFT algorithm with N = 2m. which one the following statement is TRUE?

Question 14 of 40

15. Consider the common emitter amplifier show below with the following circuit parameters:
β = 100, gm = 0.3861 A/V, r0 = ∞, rπ = 259Ω, Rs = 1 kΩ, RB = 93 kΩ, RC = 250Ω, RL = 1 kΩ
C1 = ∞ and C4.7 μF. The lower cut-off frequency due to C2 is:

Question 15 of 40

16. A fair coin is tossed independently four times. The probability of the event "the number of times heads show up is more than the number of times tails show up" is

Question 16 of 40

17. Choose the most appropriate word from the options given below to complete the following sentence:
If we manage to .................... our natural resources, we would leave a better planet for our children.

Question 17 of 40

18. Thin gate oxide in a CMOS process is preferably grown using

Question 18 of 40

19. If ey = x1/x, then y has a

Question 19 of 40

20. X(t) is a stationary process with the power spectral density Sx (f) > 0 for all f. The process is passed through a system shown below. Let SY(f)be the power spectral density of Y(t). Which one of the following statements is correct?

Question 20 of 40

21. Assuming the OP-AMP to be ideal, the voltage gain of the amplifier shown below is: Question 21 of 40

22. Two discrete time system with inputse response of the cascaded. The overall impulse response of the cascaded system is:

Question 22 of 40

23. Consider an angle modulated signal
x(t) = 6 cos [2π x 106t + 2sin (800π t) + 4cos (8000πt)] V.
The average power of x(t) is:

Question 23 of 40

24. The trignometric Fourier series for the waveform f(t)shown below contains Question 24 of 40

25. Assuming that all flip-flops are in reset condition initially, the count sequence observed at QA in the circuit shown is: Question 25 of 40

26. Hari (H), Gita(G), Irfan(I) and Saira(S) are siblings (i.e., brothers and sisters). All were born on 1st January. The age difference between any two successive siblings (that is born one after another) is less than 3 years. Given the following facts:
I. Hari's age + Gita's age > Irfan's age  + Saira's age
II. The age difference between Gita and Saira is 1 year. However, Gita is not the oldest and Saira is not the youngest.
III. There are no twins.
In what order were they born (oldest first)?

Question 26 of 40

27. The questions below consists of a pair of related words followed by four pairs of words. Select the pair that best expresses the relation in the original pair.
Unemployed : Worked

Question 27 of 40

28. The residues of a complex function X(z) = 1-2z/z(z-1)(z-2) at its poles are:

Question 28 of 40

29. In the circuit shown, the power supplied by the voltage storage is: Question 29 of 40

30. In the circuit shown the switch Sis open for a long time and is closed at t = 0. The current i(t) for t ≥ 0+ is: Question 30 of 40

31. The eigenvalues of a skew -symmetric matrix are:

Question 31 of 40

32. 25 persons are in a room. 15 of them play hockey, 17 of them play football and 10 of them play both hockey and football. Then the number of persons playing neither hockey nor football is:

Question 32 of 40

33. The amplifier circuit shown below uses a silicon transistor. The capacitor CC and CE can be assumed to be short at signal frequency and the effect of output resistance r0 can be ignored. If CE is disconnected from the circuit, which one of the following statements is TRUE? Question 33 of 40

34. Modern warfare has changed from large scale clashes from armies to suppression of civilian populations. Chemical agents that do their work silently appear to be suited to such warfare, and regretfully, there exist people in military establishment who think that chemical agents are useful tools for their cause.
Which of the following statements best sums up the meaning of the above passage:

Question 34 of 40

35. The silicon sample with unit cross-sectional area shown below is in thermal equilibrium. The following information is given: T = 300, electronic charge = 1.6 x 10-19 C, thermal voltage = 26 mV and electron mobility = 1350 cm2/V-s The magnitude of the electric field at x = 0.5 μm is:

Question 35 of 40

36. The transformer function Y(s)/R(s) of the system shown is: Question 36 of 40

37. In the silicon BJT circuit shown below, assume that the emitter area of transistor Q1 is half that of transistor Q2. The value of current I0 is approximately

Question 37 of 40

38. At room temperature, a possible value for the mobility of electrons in the inversion layer of a silicon n-channel MOSFET is:

Question 38 of 40

39. For a parallel RLC circuit, which one of the following statements is not correct?

Question 39 of 40

40. The silicon sample with unit cross-sectional area shown below is in thermal equilibrium. The following information is given: T = 300, electronic charge = 1.6 x 10-19 C, thermal voltage = 26 mV and electron mobility = 1350 cm2/V-s The magnitude of the electron drift current density at x = 0.5 μm is:

Question 40 of 40

 Test By Subject GATE Test By Topics Electronics and Communication Engineering