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ECE :: Exam Questions Paper

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Exam Questions Paper - Section 20
Exam Questions Paper - Section 21
Exam Questions Paper - Section 22

  1. What is the characteristic of a good control system?

    2. A.
    Sensitive to parameter variation
    B.
    Insensitive to input command
    C.
    Neither sensitive to parameter variation nor sensitive to input commands
    D.
    Insensitive to parameter variation but sensitive to input commands

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  2. What is the minimum value of VSWR that may exist on a transmission line?

    3. A.
    Less than zero
    B.
    Zero
    C.
    One
    D.
    10

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  3. Assertion (A): For same drain current rating N-channel MOSFET occupies more area than p-channel MOSFET.

    Reason (R): Electron mobility is much higher than hole mobility.

    4. A.
    Both A and R are individually true and R is the correct explanation of A
    B.
    Both A and R are individually true but R is not the correct explanation of A
    C.
    A is true but R is false
    D.
    A is false but R is true

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  4. What does a link budget for satellite communication include?

    5. A.
    Total cost of satellite
    B.
    Cost of satellite plus launch vehicle
    C.
    Signal and noise levels is dB
    D.
    Margins of error permitted

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  5. Which one of the following materials is used for making permanent magnets?

    6. A.
    Steel
    B.
    Carbon
    C.
    Carbon-Steel
    D.
    Graphite

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  6. Method of images is applicable to which fields?

    7. A.
    Electrostatic fields only
    B.
    Electrodynamic fields only
    C.
    Neither electrostatic fields nor electro-dynamic fields
    D.
    Both electrostatic fields and electro-dynamic fields

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  7. Identification of highest priority interrupt can be achieved in a minimum time by which of the following schemes?

    8. A.
    Hardwired polling
    B.
    Priority encode circuit
    C.
    Software polling
    D.
    Subdivision of interrupt register into a number of sub registers which are checked parallely

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  8. A super heterodyne receiver has an input circuit tuned to a 570 KHz signal. If the intermediate frequency of the amplifier is tuned to 455 KHz. The quality factor Q for a Image Rejection ratio of 125?

    9. A.
    100
    B.
    56.81
    C.
    42.74
    D.
    87

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  9. The antenna most commonly used for TV broadcasting in the UHF band is

    10. A.
    turnstile antenna
    B.
    dipole antenna
    C.
    yagi antenna
    D.
    rhombic antenna

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  10. Which of the following is a microwave power amplifier?

    11. A.
    Gunn diode
    B.
    Reflex klystron
    C.
    Magnetron
    D.
    Travelling wave tube

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