Home / ECE / Electromagnetic Field Thoery :: section-15

ECE :: Electromagnetic Field Thoery

  1. Which of the following is the reciprocal of Reluctance
  2. A.
    Henry / Meter
    B.
    Henry
    C.
    Meter / Henry
    D.
    Henry-1

    View Answer

    Workspace

    Discuss Discuss in Forum


  3. Which of the following is the unit for Relative Permeability
  4. A.
    Henry
    B.
    Henry / Meter
    C.
    Henry / Meter2
    D.
    Dimensionless

    View Answer

    Workspace

    Discuss Discuss in Forum


  5. For a transmission line terminated by a load, the reflection co-efficient magnitude |Γ |and the Voltage standing wave ratio S is related as
  6. A.
    S = 1 / (1 + |Γ |)
    B.
    S = 1 / (1 - |Γ |)
    C.
    S = (1 - |Γ |) / (1 + |Γ |)
    D.
    S = (1 + |Γ |) / (1 - |Γ |)

    View Answer

    Workspace

    Discuss Discuss in Forum


  7. The equation is known as _________law
  8. A.
    Amperes Law
    B.
    Faraday Law
    C.
    Gauss's Law
    D.
    Biot-Saverts Law

    View Answer

    Workspace

    Discuss Discuss in Forum


  9. If and in a given material, then the material is said to be
  10. A.
    Linear
    B.
    Homogenous
    C.
    Isotropic
    D.
    Linear & Homogenous

    View Answer

    Workspace

    Discuss Discuss in Forum


  11. A loop is rotating about y-axis in a magnetic field Then the voltage induced in the loop is due to
  12. A.
    Motional emf
    B.
    Transformer emf
    C.
    A combination of motional & Transformer emf
    D.
    None of these

    View Answer

    Workspace

    Discuss Discuss in Forum


  13. Which of the following statement is not true of waves in general
  14. A.
    It may be a function of time only
    B.
    It may be sinusoidal or cosinusoidal
    C.
    It may be a function of time and space
    D.
    For practical reasons, it must be finite in extent

    View Answer

    Workspace

    Discuss Discuss in Forum


  15. The dominant mode of rectangular wave guide is
  16. A.
    TE11
    B.
    TM11
    C.
    TE01
    D.
    TE10

    View Answer

    Workspace

    Discuss Discuss in Forum


  17. The electric potential due to linear quadrapole varies inversely with
  18. A.
    r
    B.
    r2
    C.
    r3
    D.
    r4

    View Answer

    Workspace

    Discuss Discuss in Forum


  19. Radiation resistance of a λ /2 dipole is
  20. A.
    73 ohm
    B.
    75 ohm
    C.
    120 ohm
    D.
    377 ohm

    View Answer

    Workspace

    Discuss Discuss in Forum