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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


Topic:- INFO MSC S2_P1

  1. Each of the following idioms has four responses (choices). Choose the correct meaning of the idioms
    Mad as a March hare:
    1. insane
    2. --- Content provided by FirstRanker.com ---

    3. intoxicated
    4. as mad as I could be
    5. slightly touched in the brain
    Correct Answer :-
    • as mad as I could be
  2. --- Content provided by FirstRanker.com ---

  3. Each of the following idioms has four responses (choices). Choose the correct meaning of the idioms
    To mince one's words:
    1. to take back one's word
    2. to repeat one's word
    3. to speak candidly
    4. to speak hesitatingly
    5. --- Content provided by FirstRanker.com ---

    Correct Answer :-
    • to speak hesitatingly
  4. Each of the following idioms has four responses (choices). Choose the correct meaning of the idioms
    To have an edge on:
    1. to cut with a knife
    2. to threaten to wound
    3. --- Content provided by FirstRanker.com ---

    4. to be slightly better
    5. to be in a dangerous situation
    Correct Answer :-
    • to be slightly better
  5. Out of the four alternatives given below, choose the one which is opposite in meaning to the each of the word.

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

    LUSCIOUS
    1. Dry
    2. Ugly
    3. Stale
    Correct Answer :-
    • Ugly
  6. --- Content provided by FirstRanker.com ---

  7. Out of the four alternatives given below, choose the one which is opposite in meaning to the each of the word.
    ABHOR
    1. detest
    2. Condemn
    3. Love
    4. Entertain
    5. --- Content provided by FirstRanker.com ---

    Correct Answer :-
    • Love
  8. Out of the four alternatives given below, choose the one which is opposite in meaning to the each of the word.
    PARSIMONIOUS
    1. Generous
    2. Frugal
    3. --- Content provided by FirstRanker.com ---

    4. Crude
    5. Stingy
    Correct Answer :-
    • Generous
  9. Each of the following items in this section consists of a sentence, the parts of which have been jumbled. These parts have been labelled P, Q, R and S. Given below each sentence are four sequences namely (1), (2), (3) and (4). You are required to rearrange the jumbled parts of the sentence and select the correct sequence.

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

    Most of Hitchcock's films
    were critically acclaimed on both sides of the Atlantic (P)
    earning him both fame and fortune (Q)
    and made good money at the box office, (R)
    in no small measure (S).

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

    The correct sequence should be
    1. PRQS
    2. PRSQ
    3. QSPR
    4. QPSR
    Correct Answer :-
    • PRQS
    • --- Content provided by FirstRanker.com ---

  10. Each of the following items in this section consists of a sentence, the parts of which have been jumbled. These parts have been labelled P, Q, R and S. Given below each sentence are four sequences namely (1), (2), (3) and (4). You are required to rearrange the jumbled parts of the sentence and select the correct sequence.
    One monsoon evening,
    the farmer returned from the fields (P)
    when the sky was overcast with threatening clouds (Q)

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

    and found a group of children playing on the road (R)
    a little earlier than usual (S).
    The correct sequence should be
    1. QSPR
    2. QPSR
    3. QRSP
    4. --- Content provided by FirstRanker.com ---

    5. PQRS
    Correct Answer :-
    • QPSR
  11. Each of the following items in this section consists of a sentence, the parts of which have been jumbled. These parts have been labelled P, Q, R and S. Given below each sentence are four sequences namely (1), (2), (3) and (4). You are required to rearrange the jumbled parts of the sentence and select the correct sequence.
    It was reported that

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

    The table (P)
    belonging to a lady (Q)
    with three carved legs (R)
    was sold the next day by auction (S),
    The correct sequence should be
    1. PRQS
    2. --- Content provided by FirstRanker.com ---

    3. QPRS
    4. PQSR
    5. PQRS
    Correct Answer :-
    • PQSR
  12. --- Content provided by FirstRanker.com ---

  13. A particle of mass m moves under the action of force field defined by F = -kr/r4. If E is the total energy supplied to the particle then its speed is given by
  14. The equation of motion for a small particle of mass m is given by mx + yx-mg = 0. Assuming initial speed to be vo the terminal speed of particle will be
    1. mg/y
    2. √vo+2gx
    3. vo + gt
    4. mg/y2t
    5. --- Content provided by FirstRanker.com ---

    Correct Answer :-
    • mg/y
  15. A plane wave having the electric field component Ei = 24cos(3 x 108t - βy)âz V/m and travelling in free space is incident normally on a lossless medium with μ = μ0 and ε = 9ε0 which occupies the region y ≥ 0. Find the reflected magnetic field component.
    1. Hr = 1/10π cos(3 x 108t + βy)âx
    2. Hr = 1/ cos(3 x 108t - βy)âx
    3. Hr = 1/10π cos(3 x 108t + βy)âx
    4. --- Content provided by FirstRanker.com ---

    5. Hr = 1/ cos(3 x 108t - βy)ây
    Correct Answer :-
    • Hr = 1/10π cos(3 x 108t + βy)âx
  16. A particle of mass m and charge q moves with a constant velocity v along the positive x-direction. It enters a region containing a uniform magnetic field B directed along the negative z-direction, extending from x = a to x = b. The minimum value of v required so that the particle can just enter the region x > b is
  17. The wave function in the ground state of hydrogen atom is given as ψ = Ae-r/a

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

    where r measures distance from nucleus and a is a constant.
    The value of A is
    1. 1/√πa
    2. 1/√πa3
    3. √πa
    4. 1/√πa5
    5. --- Content provided by FirstRanker.com ---

    Correct Answer :-
    • 1/√πa3
  18. A particle of mass m is represented by the wave function φ(x) = Aeikx, where k is the wave vector and A is constant.
    The magnitude of the probability current density of the particle is
    1. |A|2 ħk/m
    2. |A|2 ħk/2m
    3. --- Content provided by FirstRanker.com ---

    4. |A|2 ħk/3m
    5. |A|2 k2ħ/m
    Correct Answer :-
    • |A|2 ħk/m
  19. Calculate the change in internal energy of 1 kg of water when it is heated from 0°C to 100°C. Assuming that there is no interatomic energy in the perature of 300K.
  20. --- Content provided by FirstRanker.com ---

  21. Two ends of a rod are kept at 120°C and 227°C. When 2000cal of heat flows in this rod, then the change in entropy is
    1. 1.0cal/K
    2. 0.7cal/K
    3. 20.0cal/K
    4. 6.9cal/K
    Correct Answer :-
    • 20.0cal/K
    • --- Content provided by FirstRanker.com ---

  22. The volume in cylindrical coordinate between r 2 m and 4 m contains a uniform charge density ρ (C/m3). The electric flux density D for r > 4m
    1. (/rr
    2. (/rr
    3. (ρ/3rr
    4. (ρ/6rr
    5. --- Content provided by FirstRanker.com ---

    Correct Answer :-
    • (/rr
  23. The angle of resultant polarization of an electromagnetic wave whose electric field is given below
    Ex=4E0 cos(3x + 4y - 500t)
    Ex = 3E0 cos(3x + 4y – 500t + π)

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

    Ez = 0
    1. φ = tan-1(4/3)
    2. φ = tan-1(3/4)
    3. φ = tan-1(4/3)
    4. φ = tan-1(3/4)
    Correct Answer :-
    • φ = tan-1(4/3)
    • --- Content provided by FirstRanker.com ---

  24. A material at 300°K has two energy levels having wavelength separation of 1µm. The ratio of upper to lower level occupation densities when the material is in thermal equilibrium is
    1. 10-12
    2. 10-11
    3. 10-21
    4. 10-22
    5. --- Content provided by FirstRanker.com ---

    Correct Answer :-
    • 10-21
  25. For radioactive nucleus, the mean life is T. If the number of decays per unit time is n at t = 0, the number of decays between time 0 and t is
    1. nTe-t/T
    2. n(1-e-t/T)
    3. nT(1-e-t/T)
    4. --- Content provided by FirstRanker.com ---

    5. ne-t/T
    Correct Answer :-
    • n(1-e-t/T)
  26. Solve the differential equation
    dy/dx+y/xlogy = xy ex
    1. xlog y = x ex + ex + const.
    2. --- Content provided by FirstRanker.com ---

    3. xlog y = x ex - ex + const.
    Correct Answer :-
    • xlog y = x ex - ex + const.
  27. Solve
    (D2 + 6D + 9)y = e-3x/x3
    1. y = (C1+C2x)e-3x + e-3x/x3
    2. --- Content provided by FirstRanker.com ---

    3. y = (C1 + C2x) e3x + e-3x/x3
    4. y = (C1+C2x)e3x + e3x/x3
    5. y = (C1+C2x)e-3x + e-3x/x4
    Correct Answer :-
    • y = (C1+C2x)e-3x + e-3x/x3
  28. --- Content provided by FirstRanker.com ---

  29. If A =
    3 -3 4
    2 -3 4
    0 -1 1
    , then find A-1
    1. A-1 =
      1 -1 0
      -2 3 -4
      -2 3 -3
    2. A-1 =
      1 -1 0
      -2 3 4
      -2 3 -3
    3. A-1 =
      1 -1 0
      -2 -3 -4
      -2 3 -3
    4. A-1 =
      1 -1 0
      -2 3 -4
      2 3 -3
    5. --- Content provided by FirstRanker.com ---

    Correct Answer :-
    • A-1 =
      1 -1 0
      -2 3 -4
      -2 3 -3
  30. Find the rank of the matrix
    A =
    1 2 -1 3
    1 2 4 1
    2 4 3 1
    3 6 -1 2
    1 2 0 1
    1. 4
    2. 1
    3. --- Content provided by FirstRanker.com ---

    4. 3
    5. 2
    Correct Answer :-
    • 3
  31. Write down the matrix of the quadratic form

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

    x12 + 2x22 - 7x32 + x42 - 4x1x2 + 8x1x3 - 6x3x4
    1. 1 -2 4 0
      -2 2 0 0
      4 0 -7 -3
      0 0 -3 -1
    2. 1 -2 4 0
      -2 2 0 0
      4 0 -7 -3
      0 0 -3 1
    3. 1 -2 4 0
      -2 2 0 0
      4 0 -7 -3
      0 1 -3 1
    4. 1 -2 4 0
      -2 2 0 0
      4 0 -7 -3
      0 0 3 1
    Correct Answer :-
    • 1 -2 4 0
      -2 2 0 0
      4 0 -7 -3
      0 0 -3 1
    • --- Content provided by FirstRanker.com ---

  32. Let A =
    4 1 0
    1 4 1
    0 1 4
    . Find matrix P such that P-1AP is a diagonal matrix.
    1. P =
      -1 1 1
      0 -√2 √2
      1 1 1
    2. P =
      1 1 1
      0 -√2 √2
      1 1 1
    3. P =
      -1 -1 1
      0 -√2 √2
      1 1 1
    4. P =
      -1 1 1
      0 -√2 √2
      1 -1 1
    5. --- Content provided by FirstRanker.com ---

    Correct Answer :-
    • P =
      -1 1 1
      0 -√2 √2
      1 1 1
  33. Find the constants a, b and c so that
    F = (x + 2y + az)î + (bx-3y-z) + (4x + cy+2z)k
  34. A vector field is given by F = (sin y)î + x(1 + cos y)j. Evaluate the line integral over a circular path

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

    x2 + y2 = a2, z = 0.
    1. πa
    2. 3πa2
    3. 4πa2
    4. πa2
    Correct Answer :-
    • πa2
    • --- Content provided by FirstRanker.com ---

  35. Suppose that a book of 600 pages contains 40 printing mistakes. Assume that these errors are randomly distributed throughout the book and x, the number of errors per page has a Poisson distribution. What is the probability that 10 pages selected at random will be free of errors?
    1. 0.11
    2. 0.21
    3. 0.51
    4. 0.41
    5. --- Content provided by FirstRanker.com ---

    Correct Answer :-
    • 0.51
  36. Evaluate the integral
    0 /5-3 cos θ
    1. zero
    2. π/2
    3. --- Content provided by FirstRanker.com ---

    4. π
  37. Evaluate
    0 te-3t sint dt
    1. 3/50
    2. --- Content provided by FirstRanker.com ---

    3. 1/50
    4. 3π/50
    5. π/50
    Correct Answer :-
    • 3/50
  38. --- Content provided by FirstRanker.com ---

  39. Solve for f(x) from the integral equation ∫0 f(x) cos sx dx = e-s
    where the Fourier sine and cosine transform of a function f(x) may be defined as
    F(s) = √(2/π) ∫0 f(x) sin sx dx and F(s) = √(2/π) ∫0 f(x) cos sx dx
    respectively.
    1. 2/π 1/1+x2
    2. 2/ 1/1+x2
    3. --- Content provided by FirstRanker.com ---

    4. 1/π 1/1-x2
    5. 2/ 1/1-x2
    Correct Answer :-
    • 2/π 1/1+x2
  40. According to Einstein relation, for any semiconductor the ratio of diffusion constant to mobility of carriers
    1. depends upon the temperature of the semiconductor.
    2. --- Content provided by FirstRanker.com ---

    3. depends upon the type of semiconductor
    4. varies with life time of the semi conductor
    5. is a universal constant
    Correct Answer :-
    • depends upon the temperature of the semiconductor.
  41. --- Content provided by FirstRanker.com ---

  42. A common emitter transistor amplifier has an a.c. current gain of 20 and input resistance of 1kΩ. If the load(output) resistance is 5kΩ, find the change in output voltage if the input voltage changes by 1V.
    1. 10V
    2. 100V
    3. 1V
    4. 50VV
    Correct Answer :-
    • 100V
    • --- Content provided by FirstRanker.com ---

  43. 11001,1001 and 111001 correspond to the 2's complement representation of which one of the following sets of number?
    1. 25, 9 and 57 respectively
    2. -6, -6 and -6 respectively
    3. -7, -7 and -7 respectively
    4. -25, -9, and -57 respectively
    5. --- Content provided by FirstRanker.com ---

    Correct Answer :-
    • -7, -7 and -7 respectively
  44. If the function W, X, Y and z are as follows
    W = R +PA+ RS
    X = PQRS + PQRS + PQRS

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

    Y = RS + PR + PQ + PQ
    Z = R + S + PQ + PQR + PQS
    1. W = Z,X = Z
    2. W = Z,X = Y
    3. W = Y
    4. W = Y Z
    5. --- Content provided by FirstRanker.com ---

    Correct Answer :-
    • W = Z,X = Z
  45. A 4-bit modulo-16 ripple counter uses JK flip-flops. If the propagation delay of each FF is 50ns, the maximum clock frequency that can be used is equal to
    1. 20MHz
    2. 10MHz
    3. 5MHz
    4. --- Content provided by FirstRanker.com ---

    5. 4MHz
    Correct Answer :-
    • 5MHz
  46. A 3-bit D/A converter with resistance values of 12V is to be used with an op-amp of infinite gain and feedback resistance 8k. The output voltage corresponding to the binary input 101 is
  47. For the circuit shown in Fig.1, the initial conditions are zero. Its transfer function H(s) = Vo(s)/Vi (s) is

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

    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