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Delhi University Entrance Test (DUET) 2020 Previous Year Question Paper With Answer Key

This post was last modified on 27 December 2020

This download link is referred from the post: DUET Last 10 Years 2011-2021 Question Papers With Answer Key || Delhi University Entrance Test conducted by the NTA


DUMTech Microwave Electronics

FirstRanker.com

Topic: ME MTECH S2

--- Content provided by FirstRanker.com ---

  1. A family of arcs is obtained in the Smith chart by varying normalized reactance in a range of, [Question ID = 4165]
    1. 0 to 1 [Option ID = 16654]
    2. -∞ to +∞ [Option ID = 16655]
    3. 0 to +∞ [Option ID = 16656]
    4. -1 to 0 [Option ID = 16657]
    Correct Answer :-
    • -∞ to +∞ [Option ID = 16655]
    • --- Content provided by FirstRanker.com ---

  2. A 75 Ω quarter wave transformer is connected to a 125 Ω TV receiver. The impedance at the input of this transformer will be, [Question ID = 4166]
    1. 25 Ω [Option ID = 16658]
    2. 45 Ω [Option ID = 16659]
    3. 75 Ω [Option ID = 16660]
    4. 100 Ω [Option ID = 16661]
    5. --- Content provided by FirstRanker.com ---

    Correct Answer :-
    • 45 Ω [Option ID = 16659]
  3. If a coaxial line has dimensions a × b cm, the conductivity of the conductors is σ and the permittivity of the filled medium is ε. Conductance per unit length of this coaxial transmission line is given as, [Question ID = 4167]
    1. 2πσ
      ln(b/a) [Option ID = 16662]
    2. 2πε

      --- Content provided by FirstRanker.com ---

      ln(b/a) [Option ID = 16663]
    3. 1
      2πσln(b/a) [Option ID = 16664]
    4. 1
      2πεln(b/a) [Option ID = 16665]
    5. --- Content provided by FirstRanker.com ---

    Correct Answer :-
    • 2πσ
      ln(b/a) [Option ID = 16662]
  4. A lossless transmission line used in a TV Receiver has a capacitance of 50 pF/m and an inductance of 20 nH/m. The characteristic impedance of a 10 meter long line will be then, [Question ID = 4168]
    1. 50 Ω [Option ID = 16666]
    2. 20 Ω [Option ID = 16667]
    3. --- Content provided by FirstRanker.com ---

    4. 40 Ω [Option ID = 16668]
    5. 100 Ω [Option ID = 16669]
    Correct Answer :-
    • 20 Ω [Option ID = 16667]
  5. A one-half wavelength lossless line of 50 Ω is terminated to a load impedance of 50+j50 Ω, its input impedance is, [Question ID = 4169]
    1. 50+j50 Ω [Option ID = 16670]
    2. --- Content provided by FirstRanker.com ---

    3. 50-j50 Ω [Option ID = 16671]
    4. 25+j25 Ω [Option ID = 16672]
    5. 25-j25 Ω [Option ID = 16673]
    Correct Answer :-
    • 50+j50 Ω [Option ID = 16670]
  6. --- Content provided by FirstRanker.com ---

  7. ZL
    If a line of characteristic impedance Zo is connected to a load of impedance ZL, then the normalized load impedance
    Zo at a distance d is equal to, [Question ID = 4170]
    1. 1-Γ(d)
      1 + Γ (d) [Option ID = 16674]
    2. Γ(d)

      --- Content provided by FirstRanker.com ---

      1- Γ(d) [Option ID = 16675]
    3. Γ (d)
      1 + Γ (d) [Option ID = 16676]
    4. 1+ Γ (d)
      1-Γ(d) [Option ID = 16677]
    5. --- Content provided by FirstRanker.com ---

    Correct Answer :-
    • 1+ Γ (d)
      1-Γ(d) [Option ID = 16677]
  8. A copper rectangular cavity resonator is structured by 3x4x1 cm³. The resonant frequency for TM110 mode, is [Question ID = 4171]
    1. 6.25 GHz [Option ID = 16678]
    2. 5.81 GHz [Option ID = 16679]
    3. --- Content provided by FirstRanker.com ---

    4. 8.65 GHz [Option ID = 16680]
    5. 2.04 GHz [Option ID = 16681]
    Correct Answer :-
    • 6.25 GHz [Option ID = 16678]
  9. A transmission line of characteristics impedance Zo is terminated in a load having VSWR=2. The normalized load impedance Zn of the transmission line is [Question ID = 4172]
    1. Zo [Option ID = 16682]
    2. --- Content provided by FirstRanker.com ---

    3. 1 [Option ID = 16683]
    4. 0 [Option ID = 16684]
    5. 2 [Option ID = 16685]
    Correct Answer :-
    • 2 [Option ID = 16685]
  10. --- Content provided by FirstRanker.com ---

  11. In a Square coaxial transmission line shown in Fig., if the space between the conductors is filled with a material having a relative permittivity of 4.0 and the capacitance per unit length is 6.3 ε F/m, the characteristic impedance of this line will be,
    2 mm
    2 mm
    4 mm [Question ID = 4173]
    1. 30 Ω [Option ID = 16686]
    2. 50 Ω [Option ID = 16687]
    3. --- Content provided by FirstRanker.com ---

    4. 40 Ω [Option ID = 16688]
    5. 20 Ω [Option ID = 16689]
    Correct Answer :-
    • 30 Ω [Option ID = 16686]
  12. A parabolic antenna is operating at 5 GHz and has an antenna power gain of 216. The diameter of this antenna is [Question ID = 4174]
    1. 8 cm [Option ID = 16690]
    2. --- Content provided by FirstRanker.com ---

    3. 16 cm [Option ID = 16691]
    4. 25 cm [Option ID = 16692]
    5. 36 cm [Option ID = 16693]
    Correct Answer :-
    • 36 cm [Option ID = 16693]
  13. --- Content provided by FirstRanker.com ---

  14. If a signal of 30 MHz is transmitted through a coaxial cable, which has a capacitance of 40 pF/m and an inductance of 900 nH/m. The propagation velocity for a 1m long cable is given by, [Question ID = 4175]
    1. 2.36×108 m/s [Option ID = 16694]
    2. 1.66×108 m/s [Option ID = 16695]
    3. 2.66×108 m/s [Option ID = 16696]
    4. 1.33×108 m/s [Option ID = 16697]
    Correct Answer :-
    • 1.66×108 m/s [Option ID = 16695]
    • --- Content provided by FirstRanker.com ---

  15. A perpendicularly polarized wave is incident at an angle of θi = 15° and it is propagating from medium 1 to medium 2. Medium 1 is characterized by εr1 = 9, μr1 = 1, σ₁= 0 and medium 2 is a free space. If the electric field intensity E₁ = 3.0 mV/m, the value of the magnetic field intensity Hi, will be, [Question ID = 4176]
    1. 23.87 μA/m [Option ID = 16698]
    2. 48.53 μA/m [Option ID = 16699]
    3. 15.46 μA/m [Option ID = 16700]
    4. 10 μA/m [Option ID = 16701]
    5. --- Content provided by FirstRanker.com ---

    Correct Answer :-
    • 23.87 μA/m [Option ID = 16698]
  16. If capacitor plates of area 'A' are placed 'd' distance apart and the capacitor is filled with a material having dielectric constant ε, then the current through this capacitor is expressed as, [Question ID = 4177]
    1. ε dV
      Ad dt [Option ID = 16702]
    2. Ad dV

      --- Content provided by FirstRanker.com ---

      ε dt [Option ID = 16703]
    3. εA dV
      d dt [Option ID = 16704]
    4. d dV
      εA dt [Option ID = 16705]
    5. --- Content provided by FirstRanker.com ---

    Correct Answer :-
    • εA dV
      d dt [Option ID = 16704]
  17. For a 4 GHz wave propagating in a free Space, the propagation constant of this wave will be, [Question ID = 4178]
    1. j 3.14 [Option ID = 16706]
    2. j 5.53 [Option ID = 16707]
    3. --- Content provided by FirstRanker.com ---

    4. j 2.09 [Option ID = 16708]
    5. j 10.8 [Option ID = 16709]
    Correct Answer :-
    • j 2.09 [Option ID = 16708]
  18. A transmission line of characteristic impedance Zo terminated by a load R= (1/2)Zo as shown in Fig., is connected to a matched source by a switch for a short time t to produce a pulse on the line.

    --- Content provided by FirstRanker.com ---

    V
    Zo
    A
    B
    S

    --- Content provided by FirstRanker.com ---

    Zo
    Zo/2
    If the propagation time along the line is T, where T > t, the values of the reflection coefficient at point A and point B are, respectively [Question ID = 4179]
    1. 1, -1/3 [Option ID = 16710]
    2. 1, -1 [Option ID = 16711]
    3. 2, -1 [Option ID = 16712]
    4. --- Content provided by FirstRanker.com ---

    5. 1/2, -1/2 [Option ID = 16713]
    Correct Answer :-
    • 1, -1/3 [Option ID = 16710]
  19. Αλ /4 transformer is connected in between generator and load, which have impedence ratio ZL / ZG =0.16 and ZG = 50 Ω. The characteristic impedance of a λ /4 transformer is [Question ID = 4180]
    1. 8 Ω [Option ID = 16714]
    2. 20 Ω [Option ID = 16715]
    3. --- Content provided by FirstRanker.com ---

    4. 312 Ω [Option ID = 16716]
    5. 25 Ω [Option ID = 16717]
    Correct Answer :-
    • 20 Ω [Option ID = 16715]
  20. The input power needed to generate an output power of 3 W from an amplifier with a power gain of 30 dB is [Question ID = 4181]
    1. 1 W [Option ID = 16718]
    2. --- Content provided by FirstRanker.com ---

    3. 100 mW [Option ID = 16719]
    4. 1 mW [Option ID = 16720]
    5. 3 mW [Option ID = 16721]
    Correct Answer :-
    • 3 mW [Option ID = 16721]
  21. --- Content provided by FirstRanker.com ---

  22. The VSWR of a coaxial line which has a reflection coefficient of 0.6e-j<60°, is [Question ID = 4182]
    1. 4 [Option ID = 16722]
    2. 1 [Option ID = 16723]
    3. 1.6 [Option ID = 16724]
    4. 2 [Option ID = 16725]
    Correct Answer :-
    • 4 [Option ID = 16722]
    • --- Content provided by FirstRanker.com ---

  23. When EM waves travel along a metallic waveguide in which there is a discontinuity due to some lossy material filled in a small length and the other end is terminated with a matched load. The discontinuity will cause [Question ID = 4183]
    1. Progressive waves throughout the line. [Option ID = 16726]
    2. Progressive waves on the generator side and standing waves on the matched load side. [Option ID = 16727]
    3. Standing waves on the generator side and progressive waves on the matched load side. [Option ID = 16728]
    4. Standing waves thoughout the line. [Option ID = 16729]
    5. --- Content provided by FirstRanker.com ---

    Correct Answer :-
    • Standing waves on the generator side and progressive waves on the matched load side. [Option ID = 16728]
  24. The power output of an input power of 10 mW in the following system, is
    Pin = 10 mW
    25 dB

    --- Content provided by FirstRanker.com ---

    -35 dB
    Pout [Question ID = 4184]
    1. 5 dBm [Option ID = 16730]
    2. 10 dB [Option ID = 16731]
    3. 0 dBm [Option ID = 16732]
    4. 10 dBm [Option ID = 16733]
    5. --- Content provided by FirstRanker.com ---

    Correct Answer :-
    • 0 dBm [Option ID = 16732]
  25. At microwave frequency, hybrid(H), admittance (Y) and impedance (Z) parameters can not be measured because, [Question ID = 4185]
    1. Short and open circuit conditions are realizable over broad frequency range. [Option ID = 16734]
    2. Short and open circuit conditions are unrealizable over broad frequency range. [Option ID = 16735]
    3. Only short circuit condition is realizable over broad frequency range. [Option ID = 16736]
    4. --- Content provided by FirstRanker.com ---

    5. Only open circuit condition Is realizable over broad frequency range. [Option ID = 16737]
    Correct Answer :-
    • Short and open circuit conditions are unrealizable over broad frequency range. [Option ID = 16735]
  26. Noise temperature (T) and gain(G) are two important parameters of satellite antenna. Out of the following, the antenna having largest G/T ratio is [Question ID = 4186]
    1. Cassegrain antenna [Option ID = 16738]
    2. Pyramidal antenna [Option ID = 16739]
    3. --- Content provided by FirstRanker.com ---

    4. Parabolic reflector [Option ID = 16740]
    5. Dipole antenna [Option ID = 16741]
    Correct Answer :-
    • Parabolic reflector [Option ID = 16740]
  27. A generator of 50 Ω internal impedance and operating frequency of 1 GHz feeds a 75 Ω load via a coaxial line of characteristics impedance 50 Ω. The reflection coefficient on the feed line is, [Question ID = 4187]
    1. 0.2 [Option ID = 16742]
    2. --- Content provided by FirstRanker.com ---

    3. 0.67 [Option ID = 16743]
    4. 1.5 [Option ID = 16744]
    5. 1.05 [Option ID = 16745]
    Correct Answer :-
    • 0.2 [Option ID = 16742]
  28. --- Content provided by FirstRanker.com ---

  29. A lossless transmission line is excited by a signal of voltage 5∠0° V at 1.2 MHz. If the line is terminated by ZL (= Zo) at a distance 1km, the electrical length at the end point of the line is [Question ID = 4188]
    1. 4π [Option ID = 16746]
    2. 6π [Option ID = 16747]
    3. 8π [Option ID = 16748]
    4. 2π [Option ID = 16749]
    Correct Answer :-
    • 8π [Option ID = 16748]
    • --- Content provided by FirstRanker.com ---

  30. The modulated microwave signal with 1 kHz square wave modulating signal is detected by [Question ID = 4189]
    1. Tunable detector [Option ID = 16750]
    2. VSWR meter [Option ID = 16751]
    3. Spectrum analyzer [Option ID = 16752]
    4. Slotted line [Option ID = 16753]
    5. --- Content provided by FirstRanker.com ---

    Correct Answer :-
    • Tunable detector [Option ID = 16750]
  31. A parabolic dish has a gain of 40 dB at 3GHz. The diameter of this dish is [Question ID = 4190]
    1. 4.08 m [Option ID = 16754]
    2. 8.02 m [Option ID = 16755]
    3. 3.04 m [Option ID = 16756]
    4. --- Content provided by FirstRanker.com ---

    5. 1.25 m [Option ID = 16757]
    Correct Answer :-
    • 4.08 m [Option ID = 16754]
  32. A satellite operates with 12 GHz at a distance of 36000 km has effective isotropic radiated power (EIRP) of 20 dBW.The flux density at receiving antenna of each station is [Question ID = 4191]
    1. 2.21 × 10-14 W/m² [Option ID = 16758]
    2. 3.6 × 10-14 W/m² [Option ID = 16759]
    3. --- Content provided by FirstRanker.com ---

    4. 0.614 × 10-14 W/m² [Option ID = 16760]
    5. 2.0 × 10-14 W/m² [Option ID = 16761]
    Correct Answer :-
    • 0.614 × 10-14 W/m² [Option ID = 16760]
  33. A broadside array operating at 100cm wavelength consist of 4 half-wave dipoles spaced 50cm apart. Each element carries radio frequency current In the same phase and of magnitude 0.5 A. The radiated power will be [Question ID = 4192]
    1. 34π² W [Option ID = 16762]
    2. --- Content provided by FirstRanker.com ---

    3. 16π² W [Option ID = 16763]
    4. 20π² W [Option ID = 16764]
    5. 50π² W [Option ID = 16765]
    Correct Answer :-
    • 20π² W [Option ID = 16764]
  34. --- Content provided by FirstRanker.com ---

  35. Charge needed within a unit sphere centred at the origin for producing a potential field, V = - 6r5/ε for the distance r ≤ 1 meter, is [Question ID = 4193]
    1. 30 π Coulomb [Option ID = 16766]
    2. 240 π Coulomb [Option ID = 16767]
    3. 120 π Coulomb [Option ID = 16768]
    4. 180 π Coulomb [Option ID = 16769]
    Correct Answer :-
    • 120 π Coulomb [Option ID = 16768]
    • --- Content provided by FirstRanker.com ---

  36. A material has conductivity of 10-2 mho/m and a relative permittivity of 4. The frequency for which conduction current in the medium is equal to displacement current is [Question ID = 4194]
    1. 90 MHz [Option ID = 16770]
    2. 180 MHz [Option ID = 16771]
    3. 27 MHz [Option ID = 16772]
    4. 45 MHz [Option ID = 16773]
    5. --- Content provided by FirstRanker.com ---

    Correct Answer :-
    • 45 MHz [Option ID = 16773]
  37. For a electricity short dipole of length 80 cm operating at 30 MHz, the loss resistance (Rloss) is 1.5 Ω. Its radiation efficiency is [Question ID = 4195]
    1. 92.4% [Option ID = 16774]
    2. 94.9% [Option ID = 16775]
    3. 102.5% [Option ID = 16776]
    4. --- Content provided by FirstRanker.com ---

    5. 86.7% [Option ID = 16777]
    Correct Answer :-
    • 94.9% [Option ID = 16775]
  38. A Hertzien dipole of length λ/50 has an efficiency of 6.5%. The total quality factor for this dipole is [Question ID = 4196]
    1. 1.1 [Option ID = 16778]
    2. 0.20 [Option ID = 16779]
    3. --- Content provided by FirstRanker.com ---

    4. 3.7 [Option ID = 16780]
    5. 5.5 [Option ID = 16781]
    Correct Answer :-
    • 0.20 [Option ID = 16779]
  39. The value of integral ∫0π sin³ α dα is given by [Question ID = 4197]
    1. 8/3 [Option ID = 16782]
    2. --- Content provided by FirstRanker.com ---

    3. 4/3 [Option ID = 16783]
    4. 1/2 [Option ID = 16784]
    5. 2/3 [Option ID = 16785]
    Correct Answer :-
    • 4/3 [Option ID = 16783]
  40. --- Content provided by FirstRanker.com ---

  41. π/2
    The region specified by {(ρ,φ,z): 3 ≤ ρ ≤ 5, π/6 ≤ φ ≤ π/3 ,3 ≤ z ≤ 4.5} in cylindrical coordinates has volume of [Question ID = 4198]
    1. 4.712 [Option ID = 16786]
    2. 9.424 [Option ID = 16787]
    3. 2.725 [Option ID = 16788]
    4. 5.725 [Option ID = 16789]
    5. --- Content provided by FirstRanker.com ---

    Correct Answer :-
    • 4.712 [Option ID = 16786]
  42. dx
    With the initial condition x(1) = 0.5 the solution of the differential equation, t dt + x = t is [Question ID = 4199]
    1. x = t/2 [Option ID = 16790]
    2. x = t - 1/2 [Option ID = 16791]
    3. --- Content provided by FirstRanker.com ---

    4. x = t2 - 1/2 [Option ID = 16792]
    5. x= t2/2 [Option ID = 16793]
    Correct Answer :-
    • x = t/2 [Option ID = 16790]
  43. The Newton - Raphson method is used to solve the equation f(x) = x3 - 5x2 + 6x - 8 = 0. Taking the initial guess as x = 5, the solution obtained at the end of the first iteration is [Question ID = 4200]
    1. 2.2903 [Option ID = 16794]
    2. --- Content provided by FirstRanker.com ---

    3. 4.515 [Option ID = 16795]
    4. 4.2903 [Option ID = 16796]
    5. 2.515 [Option ID = 16797]
    Correct Answer :-
    • 4.2903 [Option ID = 16796]
  44. --- Content provided by FirstRanker.com ---

  45. The inverse Laplace transform of the function
    s+5
    (s + 1)(s+3) is equal to [Question ID = 4201]
    1. 2e-t + e-3t [Option ID = 16798]
    2. e-t + 2e-3t [Option ID = 16799]
    3. e-t- 2e-3t [Option ID = 16800]
    4. --- Content provided by FirstRanker.com ---

    5. 2e-t-e-3t [Option ID = 16801]
    Correct Answer :-
    • 2e-t-e-3t [Option ID = 16801]
  46. A 4 GHz carrier is amplitude modulated by a low-pass message signal is to be ideally sampled. The minimum frequency of the sampling impulse train should be [Question ID = 4202]
    1. 4 MHz [Option ID = 16802]
    2. 8 GHz [Option ID = 16803]
    3. --- Content provided by FirstRanker.com ---

    4. 4 GHz [Option ID = 16804]
    5. 8 MHz [Option ID = 16805]
    Correct Answer :-
    • 8 MHz [Option ID = 16805]
  47. ⎛1⎞

    --- Content provided by FirstRanker.com ---

    A message signal given by mt = ⎝3⎠ cosω1t amplitude-modulated with a carrier of frequency ωc to generate
    s(t) = [1+m(t)]cosωct. What is the power efficiency achieved by this modulation scheme? [Question ID = 4203]
    1. 20% [Option ID = 16806]
    2. 11.11% [Option ID = 16807]
    3. 8.33% [Option ID = 16808]
    4. 25% [Option ID = 16809]
    5. --- Content provided by FirstRanker.com ---

    Correct Answer :-
    • 20% [Option ID = 16806]
  48. The number of quantization levels with 8-bits required to reduce the quantization noise by a factor of 4 would be [Question ID = 4204]
    1. 1024 [Option ID = 16810]
    2. 64 [Option ID = 16811]
    3. 256 [Option ID = 16812]
    4. --- Content provided by FirstRanker.com ---

    5. 512 [Option ID = 16813]
    Correct Answer :-
    • 512 [Option ID = 16813]
  49. An ideal band - pass channel 500 Hz - 2000 Hz is deployed for communication. A modem is designed to transmit bits at the rate of 4800 bits/s using 16 - QAM. The roll off factor of a pulse with a raised cosine spectrum that utilizes the entire frequency band is [Question ID = 4205]
    1. 0.20 [Option ID = 16814]
    2. 0.25 [Option ID = 16815]
    3. --- Content provided by FirstRanker.com ---

    4. 0.30 [Option ID = 16816]
    5. 0.15 [Option ID = 16817]
    Correct Answer :-
    • 0.25 [Option ID = 16815]
  50. sin(πt)

    --- Content provided by FirstRanker.com ---

    The Nyquist rate for the signal s(t) = ---------------- is given by
    πτ [Question ID = 4206]
    1. 1200 Hz [Option ID = 16818]
    2. 400 Hz [Option ID= 16819]
    3. 600 Hz [Option ID = 16820]
    4. 1400 Hz [Option ID = 16821]
    5. --- Content provided by FirstRanker.com ---

    Correct Answer :-
    • 1200 Hz [Option ID = 16818]
  51. The Vestigial Side Band (VSB) modulation is preferred in TV systems because It reduces the bandwidth requirement to half it avoids phase distortion at low frequency [Question ID = 4207]
    1. 1 only [Option ID = 16822]
    2. 2 only [Option ID = 16823]
    3. Neither 1 nor 2 [Option ID = 16824]
    4. --- Content provided by FirstRanker.com ---

    5. Both 1 and 2 [Option ID = 16825]
    Correct Answer :-
    • Neither 1 nor 2 [Option ID = 16824]
  52. A communication channel distributed by Gaussian noise has a bandwidth of 6 kHz and S/N ratio of 15. The maximum transmission rate that such a channel can support is [Question ID = 4208]
    1. 48 kbits/s [Option ID = 16826]
    2. 24 kbits/sec [Option ID = 16827]
    3. --- Content provided by FirstRanker.com ---

    4. 2.4 kbits/s [Option ID = 16828]
    5. 32 kbits/s [Option ID = 16829]
    Correct Answer :-
    • 24 kbits/sec [Option ID = 16827]
  53. In the given circuit, the value of Vx is

    --- Content provided by FirstRanker.com ---

    5A
    0.5 V
    10 Ω
    +
    V 20 Ω

    --- Content provided by FirstRanker.com ---


    0.25 V [Question ID = 4209]
    1. 12 V [Option ID = 16830]
    2. 10 V [Option ID = 16831]
    3. 0.8 V [Option ID = 16832]
    4. 8 V [Option ID = 16833]
    5. --- Content provided by FirstRanker.com ---

    Correct Answer :-
    • 8V [Option ID = 16833]
  54. In the circuit shown, the current I flowing through the 50 Ω resistor will be zero if the value of Capacitor C (in µF) is
    5元 sin(5000t)
    50 Ω

    --- Content provided by FirstRanker.com ---

    I
    1 mH
    1 mH
    1 mH
    C [Question ID = 4210]
    1. 15 μF [Option ID = 16834]
    2. --- Content provided by FirstRanker.com ---

    3. 20 μF [Option ID = 16835]
    4. 10 μF [Option ID = 16836]
    5. 22.5 μF [Option ID = 16837]
    Correct Answer :-
    • 20 μF [Option ID = 16835]
  55. --- Content provided by FirstRanker.com ---

  56. In the circuit shown, the initial voltages across the capacitors C₁ and C2 are 1V and 3V, respectively. The switch is closed at time t = 0. The total energy dissipated (in Joules) in the resistor R until steady state is reached, is
    +
    C₁ = 3F
    R = 10 Ω
    +

    --- Content provided by FirstRanker.com ---

    C₂ = 1F [Question ID = 4211]
    1. 1.5 J [Option ID = 16838]
    2. 1.0 J [Option ID = 16839]
    3. 0.5 J [Option ID = 16840]
    4. 2 J [Option ID = 16841]
    Correct Answer :-
    • 1.5 J [Option ID = 16838]
    • --- Content provided by FirstRanker.com ---

  57. The driving point impedance of the following network is given by Z(s) = 2+ ---------------------
    Z(s)
    L
    C

    --- Content provided by FirstRanker.com ---

    R
    0.2s
    +0.1s + 2 The component values are [Question ID = 4212]
    1. L = 0.1 H, R = 0.5 Ω, C = 5 F [Option ID = 16842]
    2. L = 5 H, R = 0.5 Ω, C = 0.1 F [Option ID = 16843]
    3. L = 0.1 H, R = 2 Ω, C = 5 F [Option ID = 16844]
    4. --- Content provided by FirstRanker.com ---

    5. L = 5H, R = 2 Ω, C = 0.1 F [Option ID = 16845]
    Correct Answer :-
    • L = 0.1 H, R = 2 Ω, C = 5 F [Option ID = 16844]

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This download link is referred from the post: DUET Last 10 Years 2011-2021 Question Papers With Answer Key || Delhi University Entrance Test conducted by the NTA