Menu
Home / ECE / Microwave Communication :: Section 6

ECE :: Microwave Communication

Microwave Communication - Section 1
Microwave Communication - Section 2
Microwave Communication - Section 3
Microwave Communication - Section 4
Microwave Communication - Section 5
Microwave Communication - Section 6
Microwave Communication - Section 7
Microwave Communication - Section 8

  1. TE01 mode of propagation of electromagnetic energy

    2. A.
    is merely the TE10 mode rotated 90°
    B.
    is merely the TE10 mode rotated 180°
    C.
    is the same as TE10 mode
    D.
    either (b) or (c)

    View Answer

    Workspace

    Discuss Discuss in Forum

  2. Assertion (A): Slotted line is frequently used for microwave measurements.

    Reason (R): The unknown impedance is mounted at the end of slotted line.

    3. A.
    Both A and R are correct and R is correct explanation of A
    B.
    Both A and R are correct but R is not correct explanation of A
    C.
    A is correct but R is wrong
    D.
    A is wrong but R is correct

    View Answer

    Workspace

    Discuss Discuss in Forum

  3. Fibers have numerical aperture (NA) in the range of 0.15 to 0.4 Fibers with higher NA value would have

    4. A.
    reduced losses
    B.
    high bandwidth
    C.
    reduced losses and low bandwidth
    D.
    more losses and low bandwidth

    View Answer

    Workspace

    Discuss Discuss in Forum

  4. The following components are used to measure power output of a 2 kW TWT amplifier

    1. TWT
    2. Low pass/High pass filter
    3. Low power 20 dB attenuator
    4. 40 dB directional coupler with matched load
    5. Power meter.
    The correct sequence of connections of these components is:

    5. A.
    1, 4, 2, 3, 5
    B.
    1, 3, 4, 2, 5
    C.
    1, 2, 4, 3, 5
    D.
    1, 4, 3, 2, 5

    View Answer

    Workspace

    Discuss Discuss in Forum

  5. Which part of radio spectrum is more crowded?

    6. A.
    Lower frequency part
    B.
    Higher frequency part
    C.
    Both (a) and (b)
    D.
    None of these

    View Answer

    Workspace

    Discuss Discuss in Forum

  6. As compared to their values in free space

    7. A.
    velocity of electric wave in dielectric is smaller but wave length of electric wave is more
    B.
    both velocity and wave length of electric wave in dielectric are higher
    C.
    both velocity and wave length of electric wave in dielectric are smaller
    D.
    wave length of electric wave is less but velocity is more in dielectric

    View Answer

    Workspace

    Discuss Discuss in Forum

  7. A 3 port circulator is in the given figure. Its scattering matrix is

    8. View Answer

    Workspace

    Discuss Discuss in Forum

  8. Characteristic impedance of a coaxial cable is inversely proportional to ∈r.

    9. A.
    True
    B.
    False

    View Answer

    Workspace

    Discuss Discuss in Forum

  9. A rectangular waveguide has a discontinuity in the form of reduced narrow dimension. In the equivalent circuit this discontinuity can be represented by

    10. A.
    a shunt capacitance at the discontinuity
    B.
    a shunt inductance at the discontinuity
    C.
    a shunt resistance at the discontinuity
    D.
    none of the above

    View Answer

    Workspace

    Discuss Discuss in Forum

  10. Depth of penetration does not depend on frequency.

    11. A.
    True
    B.
    False

    View Answer

    Workspace

    Discuss Discuss in Forum

Java Programming Questions and Answers Interview Questions and Answers