Q. Why can we not use sky waves for navigation?

View solution

Q. Ground waves are not adversely affected by which of the following factors?

View solution

Q. The propagation velocity is not constant in ground waves.

View solution

Q. The effect of signal simultaneously taking different paths to reach the receiver is called as _______

View solution

Q. ______ is the error in determining position relative to an earth referenced coordinate system?

View solution

Q. The method in which the user’s receiver and the reference station are assumed not to be synchronized in time is called as _______

View solution

Q. Which type of direction finders takes bearings on airborne transmitters and advice the aircraft of its bearing from the ground station?

View solution

Q. Which of the following is not true with respect to airborne direction finder?

View solution

Q. Which of the following type of direction finder has a system that rotates the loop, using a servo system until a null is found?

View solution

Q. Which of the following is not true with respect to loop antennas?

View solution

Q. What can be added to reduce signal ambiguity in a loop antenna?

View solution

Q. What is used to combine the output of the two fixed loop antenna that are placed at right angles to each other?

View solution

Q. The area of reduced signal strength in a non directional beacon is called as ______

View solution

Q. Which of the following is not an advantage of NDB?

View solution

Q. What frequency does the marker beacon use for fixes along the airways?

View solution

Q. Which of the following can be used to reinforce the upward beam in a marker beacon?

View solution

Q. What is the frequency of rotation of the directional beam in a VOR?

View solution

Q. Which of the following generates the same field pattern as a vertical dipole antenna?

View solution

Q. What is the time gap between each pulse in an interrogation pulse pair for a DME?

View solution

Q. Why are pulse pairs used in DME instead of single pulses?

View solution