GATE Online Mock Exam Quiz!

9 Questions | Total Attempts: 105

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GATE Online Mock Exam Quiz! - Quiz

Questions and Answers
  • 1. 
    A Carrier is a frequency modulated with a sinusoidal signal of 2 kHz, resulting in a maximum frequency deviation of 5 kHz, the Bandwidth of the modulated signal.
    • A. 

      32 KHz

    • B. 

      14 KHz

    • C. 

      15 KHz

    • D. 

      7 Khz

    • E. 

      None Of these

  • 2. 
    A Certain telephone line bandwidth is 3.5 kHz, the data rate can be transmitted if we use binary signaling with the raised cosine pulses and a roll-off factor α = 0.25
    • A. 

      1400 b/s

    • B. 

      2800 b/s

    • C. 

      5600 b/s

    • D. 

      3600 b/s

    • E. 

      None Of These

  • 3. 
    Consider a system with the transfer function G(s) = . Its damping ratio will be 0.5 when the value of K is  
    • A. 

      1/7

    • B. 

      2/7

    • C. 

      3

    • D. 

      7

    • E. 

      None Of these

  • 4. 
    The root locus of the system G(s) H(s) =  has the break-away point located at
    • A. 

      (–0.680, 0)

    • B. 

      (–3.786, 0)

    • C. 

      (–0.5, 0)

    • D. 

      (–0.880, 0)

    • E. 

      (–0.450, 0

  • 5. 
    Two identical and parallel dipole antenna are kept apart by a distance of λ/4 in the H-plane. They are fed with equal currents but the right most antenna has a phase shift of +90º.
    • A. 
    • B. 
    • C. 
    • D. 
    • E. 

      None Of These

  • 6. 
      The system with the open loop transfer function G(s) H(s) = has a gain margin & cross over frequency of
    • A. 

      0 dB, 1 rad/sec

    • B. 

      3.5 dB, 2 rad/sec

    • C. 

      5 dB, 5 rad/sec

    • D. 

      7 dB, 1 rad/sec

    • E. 

      7 dB, 2 rad/sec

  • 7. 
    The signal x(t) shown in figure can be expressed as      
    • A. 

      U (t + 1) – 2u(t – 1) + 2u(t – 2)

    • B. 

      U(t – 1) – 2u(t + 1) + 2 u(t + 2)

    • C. 

      U(t – 1) – 2u(t + 1) + 2 u(t + 2)

    • D. 

      U(t – 1) + 2u(t + 1) – 2u(t + 2)

    • E. 

      None Of These

  • 8. 
    An air filled rectangular waveguide has inner dimension of 3 cm × 2 cm. The wave impedance of the TE20 mode of propagation in the waveguide at a frequency of 20 GHz is (free space impedance  η0 = 377Ω)
    • A. 

      461 Ω

    • B. 

      400 Ω

    • C. 

      308 Ω

    • D. 

      435 Ω

    • E. 

      445 Ω

  • 9. 
    The circuit in the figure has two CMOS-NOR gates. This circuit functions as a  
    • A. 

      Flip-flop

    • B. 

      Schmitt Trigger

    • C. 

      Monosatable Multivibrator

    • D. 

      Bistable Multivibrator

    • E. 

      None Of These

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