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Questions and Answers
What type of antenna radiates equally in all directions?
What type of antenna radiates equally in all directions?
- Vertical Antenna
- Isotropic Antenna (correct)
- Horizontal Antenna
- Dipole Antenna
What does the power pattern of an antenna provide information about?
What does the power pattern of an antenna provide information about?
- The antenna's directivity
- The antenna's gain
- The antenna's coverage (correct)
- The wavelength of a wave
In which direction is the radiation strongest from a half-wave dipole antenna in free space?
In which direction is the radiation strongest from a half-wave dipole antenna in free space?
- Off the ends of the antenna
- In the direction of the feed line
- Equally in all directions
- Broadside to the antenna (correct)
What does a waveguide convert electrical energy travelling along a transmission line into?
What does a waveguide convert electrical energy travelling along a transmission line into?
What is the term for the ratio of the maximum radiation intensity in a given direction to the radiation intensity averaged over all directions?
What is the term for the ratio of the maximum radiation intensity in a given direction to the radiation intensity averaged over all directions?
What is the wavelength of a wave in a waveguide proportional to?
What is the wavelength of a wave in a waveguide proportional to?
What is the purpose of a reflector element in a Yagi-Uda antenna system?
What is the purpose of a reflector element in a Yagi-Uda antenna system?
Which of the following statements about impedance matching in antenna systems is true?
Which of the following statements about impedance matching in antenna systems is true?
What is the radiation characteristic of a dipole antenna?
What is the radiation characteristic of a dipole antenna?
What is the best solution to fading in antenna systems?
What is the best solution to fading in antenna systems?
What is often used for satellite communication due to its ability to focus signals in a specific direction?
What is often used for satellite communication due to its ability to focus signals in a specific direction?
What does impedance matching primarily ensure in an antenna system?
What does impedance matching primarily ensure in an antenna system?
In the 1496/1596 IC balanced modulator, what is the principal circuit used?
In the 1496/1596 IC balanced modulator, what is the principal circuit used?
What does Vm > Vc represent in the context of modulation?
What does Vm > Vc represent in the context of modulation?
Which device is commonly used in SSB generators for filtering?
Which device is commonly used in SSB generators for filtering?
What is the primary function of a bridge in modulation circuits?
What is the primary function of a bridge in modulation circuits?
Which modulation type involves Letter A from the given options?
Which modulation type involves Letter A from the given options?
What does Vm = Vc = 0 represent in the context of modulation?
What does Vm = Vc = 0 represent in the context of modulation?
What is considered as the first detector in superheterodyne?
What is considered as the first detector in superheterodyne?
What is the primary purpose of modulation in communication?
What is the primary purpose of modulation in communication?
In Amplitude Modulation (AM), what does the amplitude of the carrier signal represent?
In Amplitude Modulation (AM), what does the amplitude of the carrier signal represent?
What produces the sidebands on Frequency Modulation (FM)?
What produces the sidebands on Frequency Modulation (FM)?
What does the term 'quadrature' refer to in Quadrature Amplitude Modulation (QAM)?
What does the term 'quadrature' refer to in Quadrature Amplitude Modulation (QAM)?
Which best describes the function of the intermediate frequency (IF) stage in a superheterodyne receiver?
Which best describes the function of the intermediate frequency (IF) stage in a superheterodyne receiver?
What type of transmission line is commonly used for high frequency signals, such as radio frequency (RF) signals?
What type of transmission line is commonly used for high frequency signals, such as radio frequency (RF) signals?
What is the significance of the term 'standing wave ratio (SWR)' in the context of transmission lines?
What is the significance of the term 'standing wave ratio (SWR)' in the context of transmission lines?
What does the radius of the circle you draw on a Smith Chart represent?
What does the radius of the circle you draw on a Smith Chart represent?
In a loss-less transmission line, what will be the input impedance for a λ/8 long short circuit section?
In a loss-less transmission line, what will be the input impedance for a λ/8 long short circuit section?
Which type of code is currently used in PCM (Pulse Code Modulation)?
Which type of code is currently used in PCM (Pulse Code Modulation)?
What happens to a positive voltage pulse sent down a transmission line terminated with its characteristic impedance?
What happens to a positive voltage pulse sent down a transmission line terminated with its characteristic impedance?
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