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GATE EC: 2018 Mini Mock 5
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Question 1
In cellular networks, on similar channels, simultaneous users will result on:
i. Digital Technology
ii. Reuse of frequency
iii. CDMA and TDMA
iv. VLRs and HLR
i. Digital Technology
ii. Reuse of frequency
iii. CDMA and TDMA
iv. VLRs and HLR
Question 2
Consider a multiplexer with X and Y as data inputs and Z as control input. Z = 0 selects input X and Z = 1 selects input Y. What are the connections required to realize the 2- variable Boolean function , without using any additional hardware?
Question 3
What will be the minimum frequency response, for which a signal x(t) could be reconstructed from the given sample x(t), when x(t) = 2 cos (100πt) + 5 sin (250 πt + π/3) - 4.5 cos (375 πt - π /4) + 15.9 sin (600 π t + π/9)
Question 4
What will be the maximum value of magnetic field, if an electromagnetic wave propagates in x direction with wavelength 15.0 mm having an electric field in y direction with magnitude of 80 V/m
Question 5
On an A-4 size sheet, a colour scanner scans a picture with dimensions: height 11 inches and width 8.5 inches. If the resolution of colour scanner is 600 dots/inch with picture quantization of 256 levels/color, then find the time required to transmit a picture with 256 kbps modem speed?
Question 6
Consider the following statements:
For the first order transient systems, the time constant is
1) a specification of transient response
2) reciprocal of real-axis pole location
3) an indication of accuracy of response
4) an indication of speed of the response
Which of the statements given above are correct?
For the first order transient systems, the time constant is
1) a specification of transient response
2) reciprocal of real-axis pole location
3) an indication of accuracy of response
4) an indication of speed of the response
Which of the statements given above are correct?
Question 7
Match List-i (Load Impedance) with List-ii (Value of Reflection Coefficient) and select the correct answer using the code given below the Lists:
List-i List-ii
A. Short Circuit 1. 0
B. Open Circuit 2. 1
C. Line characteristic impedance 3. -1
D. 2 x line characteristic impedance 4. 1/3
Question 8
The PMOSFET circuit shown in the figure has . If IDS = -0.1mA and VDS = -2.4V then the width of channel W and R are respectively:
Question 9
Consider the following statements:
For a square waveguide of cross-section 3cm × 3 cm it has been found.
1). At 6 GHz dominant mode will propagate.
2). At 4 GHz all the modes are evanescent.
3). At 11 GHz only dominant modes and no higher order mode will propagate.
4). At 7 GHz degenerate modes will propagate.
Which of the above statements are correct?
For a square waveguide of cross-section 3cm × 3 cm it has been found.
1). At 6 GHz dominant mode will propagate.
2). At 4 GHz all the modes are evanescent.
3). At 11 GHz only dominant modes and no higher order mode will propagate.
4). At 7 GHz degenerate modes will propagate.
Which of the above statements are correct?
Question 10
The driving point impedance of the network shown in the figure has a zero at -4 and poles at
then find the values of R, L and C are respectively
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ESE & GATE ECGeneralJul 6ESE & GATE EC