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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
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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 Electronics and Communication Test 5 Question Answer Online

GATE

1. 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
Thermal
The magnitude of the electron drift current density at x = 0.5 μm is:

Question 1 of 40

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

Question 2 of 40

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

Question 3 of 40

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

Question 4 of 40

5. 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 5 of 40

6. Assuming that all flip-flops are in reset condition initially, the count sequence observed at QA in the circuit shown is:
alpha

Question 6 of 40

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

Question 7 of 40

8. 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 8 of 40

9. 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 9 of 40

10. In the circuit shown, the power supplied by the voltage storage is:
circuit

Question 10 of 40

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

Question 11 of 40

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

Question 12 of 40

13. 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 13 of 40

14. 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 14 of 40

15. 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 15 of 40

16. 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 16 of 40

17. 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 17 of 40

18. 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.
spectral
Let SY(f)be the power spectral density of Y(t). Which one of the following statements is correct?

Question 18 of 40

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

Question 19 of 40

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

Question 20 of 40

21. 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 21 of 40

22. 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 22 of 40

23. 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:
active

Question 23 of 40

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

Question 24 of 40

25. 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
Thermal
The magnitude of the electric field at x = 0.5 μm is:

Question 25 of 40

26. 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?
Transit

Question 26 of 40

27. 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 27 of 40

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

Question 28 of 40

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

Question 29 of 40

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

Question 30 of 40

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

Question 31 of 40

32. The trignometric Fourier series for the waveform f(t)shown below contains
constant

Question 32 of 40

33. 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 33 of 40

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

Question 34 of 40

35. For the asymptotic Bode magnitude plot shown below, the system transfer function can be
Function

Question 35 of 40

36. 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.
Beta
The lower cut-off frequency due to C2 is:

Question 36 of 40

37. 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 37 of 40

38. 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 38 of 40

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

Question 39 of 40

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

Question 40 of 40


 

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