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1) Which type of wire antennas are also known as dipoles? a. Linear b. Loop c. Helical d. All of the above
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2) Which antennas are renowned as patch antennas especially adopted for space craft applications? a. Aperture b. Microstrip c. Array d. Lens
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3) Which conversion mechanism is performed by parabolic reflector antenna? a. Plane to spherical wave b. Spherical to plane wave c. Both a and b d. None of the above
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4) Which antenna radiating region/s has/have independent nature of angular field distribution over the distance from the antenna? a. Reactive near-field region b. Fresnel region c. Fraunhofer region d. All of the above
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5) Sterdian is a measurement unit of __________ a. Point angle b. Linear angle c. Plane angle d. Solid angle
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6) According to the geometry, how many sterdians are present in a full sphere? a. π/2 b. π c. 2π d. 4π
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7) The vector magnetic potential shows the inverse relationship with its ____ a. Source b. Distance of point from the source (R) c. Both a and b d. None of the above
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8) Dipole antenna is symmetrical in nature where the two ends are at equal potentials with respect to _____point a. Initial b. Eventual c. Mid d. None of the above
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9) What is the nature of current distribution over the small dipoles? a. Spherical b. Rectangular c. Triangular d. Square
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10) For receiving a particular frequency signal, which tuning component must be used by the loop to form a resonant circuit for tuning to that frequency? a. Capacitor b. Inductor c. Resistor d. Gyrator
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