Q.1
The directivity of Yagi-Uda antenna is increased by adding ______
  • a) reflectors
  • b) driven element
  • c) directors
  • d) boom
Q.2
Directors are used to increase ______ of the Yagi-Uda antenna.
  • a) Directivity
  • b) Gain
  • c) Back lobe
  • d) Reflection away from the radiation
Q.3
What is the radiation pattern of a Yagi-Uda antenna?
  • a) Broad-side
  • b) End-fire
  • c) Collinear
  • d) Both Broadside and End-fire
Q.4
A narrow beam-width is obtained through a large number of directors.
  • a) True
  • b) False
Q.5
The dipole to which the power is applied directly from the feeder in the Yagi-Uda antenna is called as _____
  • a) Director
  • b) Reflector
  • c) Driven element
  • d) Boom
Q.6
Folded dipole is used than a single dipole in Yagi-Uda to obtain wider frequency range.
  • a) True
  • b) False
Q.7
In which of the following bands Yagi-Uda antenna operates?
  • a) HF-UFH
  • b) VLF-MF
  • c) LF-HF
  • d) UHF-EHF
Q.8
A Yagi-Uda antenna is ____
  • a) Only a super directive antenna
  • b) Only a super gain antenna
  • c) Both super directive and super gain
  • d) Neither super directive nor super gain
Q.9
In order to convert the bidirectional dipole to unidirectional system, we use _______
  • a) Active element
  • b) Driven element
  • c) Parasitic element
  • d) Isolator
Q.10
Which of the following will add the field of the driven element and will excite the next parasitic element to increase the gain of the antenna?
  • a) Director
  • b) Reflector
  • c) Active element
  • d) Boom
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