Are you interested in purchasing the entire website? If so, we will include an additional premium domain (freetimelearn.com) at no extra cost along with this domain.
Mail : freetimelearn@gmail.com
WhatsApp : +919966463846
Correct Answer : Unpredictable path
Explanation : The sky waves makes some types of long range communication possible, but is of less value to navigation system because it’s transmission path is unpredictable. A rough location where the sky waves might get reflected can be determined by Snell’s law.
Correct Answer : Option (C) : Hanging tower
Explanation : Since the Omega stations transmit in very low frequencies, the antennas are the largest physical structures in the stations. Three types of antennas are employed in the Omega system: grounded tower, insulated tower, and the valley span.
Correct Answer : Option (B) : Helix
Explanation : The RF signal that is to be transmitted is transferred to the ‘Helix,’ a large helical coil that acts as a coarse tuning device for the antenna. The helix is equipped with separate taps for each signal frequency transmitted.
Correct Answer : Option (B) : Continuous wave
Explanation : At each Omega station, continuous wave signals on four common frequencies and one station unique frequency. The signal frequencies are time shared among the stations so that a given frequency is transmitted by only one station at any given time.
