8
1-63. E-type and H-type junctions are
combined in which of the following
devices?
1. Magic T
2. Rat race
3. Feed horn
4. Hybrid ring
1-64. Low power-handling capabilities and
internal power losses are the primary
disadvantages of which of the following
devices?
1. Magic T
2. Rat race
3. Duplexer
4. Hybrid ring
1-65. The hybrid ring is usually used as what
type of device in radar systems?
1. Mixer
2. Detector
3. Duplexer
4. Impedance matcher
1-66. Ferrite devices are useful in electronic
and microwave applications because they
possess magnetic properties and offer
which of the following other properties?
1. Negative resistance to current flow
2. Low resistance to current flow
3. High resistance to current flow
4. High conductance for current flow
1-67. Electrons exhibit which of the following
types of motion?
1. Spin
2. Orbital
3. Both 1 and 2 above
4. Linear
1-68. Electrons in a ferrite can be caused to
wobble on their axes by which of the
following actions?
1. Decreasing the internal resistance
2. Increasing the internal resistance
3. Applying a magnetic field
4. Applying an electric field
1-69. The energy in a ferrite attenuator that is
attenuated is dissipated as which of the
following energy forms?
1. Heat
2. Light
3. Magnetic
4. Electrical
1-70. The amount of rotation in a Faraday-
rotation type ferrite phase shifter is
dependent upon which of the following
ferrite properties?
1. Length of the material
2. Diameter of the material
3. Strength of the material
4. Internal resistance of the material
