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# GATE Electronics and Communication Test Paper 1 Online

 Test Name GATE Electronics and Communication Test Paper 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

Electronics and Communication engineering is also abbreviated as ECE, this subject is one of the engineering branches which are being covered by GATE examination. You can prepare your exams, test, admissions entry test according to GATE exams through proper pattern for Electronics and communication engineering. Our this page manage and covers all topics for preparation of examinations.

## GATE

1. The range of signed decimal numbers that can be represented by 6-bit is complement number is

Question 1 of 40

2. A 10 mH inductor carries a sinusoidal current of 1 A rms at a frequency of 50 Hz. The average power dissipated by the inductor is:

Question 2 of 40

3. Two coils in differential connection have self-inductance of 2mH and 4 mH and mutual inductance of 0.15 mH. The equivalent inductance of the combination is:

Question 3 of 40

4. If we use 3 bits in the instruction word to indicate if an index register is to be used and if necessary which one is to be used than the number of index register to be used in the machine will be:

Question 4 of 40

5. The number 7 F 00 in Hexadecimal when multiplied by 16 is:

Question 5 of 40

6. In second order control system the value of the resonant peak will be unity when the damping ratio has a value of:

Question 6 of 40

7. If for a silicon n-p-n transistor, the base to emitter voltage (VBE) is 0.7 Vand the collector to base voltage (VCB) is 0.2V. Then the transistor is operating in the:

Question 7 of 40

8. The impedance of a parallel RLC network is Z(s) = 5s/s2+0.5s+100. The the value of RLC respectively

Question 8 of 40

9. Assume the op-amp to be ideal. The current I through the 1 k-ohm resistor is: Question 9 of 40

10. The impurity commonly used for realising the base region of a silicon n-p-n transistor is:

Question 10 of 40

11. Block search is used to locate a record in a ordered file consisting of N records. The optimum size of the block is:

Question 11 of 40

12. An antenna, when radiating has a highly directional radiation pattern. When the antenna is receiving , its radiation pattern

Question 12 of 40

13. In the circuit shown in figure. |V0| = |V| for a certain set of values of ω, R and C.|V0| will remain as V even if: Question 13 of 40

14. The input to a controller is:

Question 14 of 40

15. At t = 0 the switch in the circuit shown is closed. The voltage VC (t) shown across the capacitor for t ≥ 0, is: Question 15 of 40

16. An advantage of memory interlacing is that:

Question 16 of 40

17. Using the node method for circuit analysis, it is determined that the node voltage eb = 10. The value for V, in the diagram shown, is: Question 17 of 40

18. The noise figure of an amplifier is 3 dB, its noise temperature will be about:

Question 18 of 40

19. The op-amp of figure has a very poor open loop voltage gain of 45 but otherwise it is ideal. The gain of the amplifier equals Question 19 of 40

20. A filter is described by the circuit shown. If Vs(t) = A cos t + B cos 100 t, then V0(t) = α A cos (t + θ) + β B cos (100 t +Φ) where     |α/β| is: Question 20 of 40

21. Figure shows the circuit diagram of a wien bridge oscillator using the op-amp. The frequency of oscillator is given by f = 1/2π CR. To have the system oscillate the ratio R2/R1 should be: Question 21 of 40

22. Which of the following is associated with optics:

Question 22 of 40

23. In integrated circuits electronics the basic universal gate is:

Question 23 of 40

24. A system has a word length of 4 bits. If in this system negative numbers are represented by their two's complement then the range of numbers that can be represented by the word length is:

Question 24 of 40

25. Six independent low pass signal of bandwidth 3ω, ω, ω, 2ω, and 2ω Hz are to time division multiplexer on a common channel using PAM. To achieve this, the minimum transmission bandwidth of the channel should be ..... Hz

Question 25 of 40

26. Schottky clamping is resorted to in TTL gates:

Question 26 of 40

27. The add cycle-time of a serial adder of 10-bit words and 1 MHz clock is:

Question 27 of 40

28. The intrinsic impedance of a lossy dielectric medium is given by:

Question 28 of 40

29. The function of a multiplexer is:

Question 29 of 40

30. The 120 V RMS circuit below has the following characteristics: 1. Phasor voltage across the capacitor VC = 100/RωC + j(ω2LC - 1)
2. Phasor current in the inductor is IL = 160jπ/2/R + j(ωL - 1/ωC)
The power dissipated in the 2 ohm resistor is given by:

Question 30 of 40

31. In a multiprocessor configuration, two co-processor are connected to the host 8086 processor. The two co-processor instruction sets:

Question 31 of 40

32. In time division multiplexion:

Question 32 of 40

33. It R is the record, D is the recording density and G is the gap length, then the tap utilization is given by:

Question 33 of 40

34. The driving point impedance Z(s) = s2+2s+2/s2+s+1 can be realized as a:

Question 34 of 40

35. An electromagnetic field is said to be conservative when

Question 35 of 40

36. An ideal op-amp is an ideal:

Question 36 of 40

37. A communication channel with additive white Gaussian noise, has a bandwidth of 4 kHz and SNR of 15. Its channel capacity is:

Question 37 of 40

38. In a 16-bit microprocessor words are stored in two consecutive memory locations. The entire word can be read in operations provided the first:

Question 38 of 40

39. An op-Amp has an offset voltage of 1 mV and is ideal in all other respect. If this op-amp is used in the circuit shown in figure, the output voltage will be (select the nearest value) Question 39 of 40

40. For the circuit shown below, the switched was closed for a long time before t = 0, At t = 0 the switched is opened. The voltage v(t) across the register and inductor is as shown below Question 40 of 40

 Test By Subject GATE Test By Topics Electronics and Communication Engineering