#1
What does DME stand for in aviation?
Distance Measurement Equipment
ExplanationDME measures distance between aircraft and ground stations.
#2
What is the primary function of a VORTAC?
Provide VHF omnidirectional range (VOR) and tactical air navigation (TACAN) signals
ExplanationVORTAC combines VOR and TACAN functions for navigation.
#3
What is the maximum range of typical DME equipment?
150 nautical miles
ExplanationDME typically covers up to 150 nautical miles.
#4
Which of the following statements about VORTAC stations is true?
They are equipped with both VOR and TACAN facilities
ExplanationVORTAC stations provide both VOR and TACAN functionalities.
#5
What is the primary difference between VOR and TACAN signals?
VOR signals provide only bearing information, while TACAN signals provide both distance and bearing information
ExplanationTACAN signals offer both distance and bearing data unlike VOR.
#6
What is the typical accuracy of DME distance measurements?
Within 1 nautical mile
ExplanationDME distance measurements are accurate within 1 nautical mile.
#7
How does DME determine an aircraft's distance from a ground station?
By measuring the time it takes for a radio signal to travel between the aircraft and the ground station
ExplanationDME calculates distance based on signal travel time.
#8
What is the primary advantage of using DME in navigation?
It works independently of ground-based stations
ExplanationDME operates autonomously from ground stations.
#9
What is the frequency band typically used by DME equipment?
VHF (Very High Frequency)
ExplanationDME operates in the VHF band.
#10
What is the primary limitation of DME in terms of coverage?
It is limited to line-of-sight distances
ExplanationDME coverage is constrained by line of sight.
#11
Which of the following is a limitation of VOR stations compared to TACAN stations?
VOR stations have a shorter range than TACAN stations
ExplanationVOR stations have shorter operational ranges compared to TACAN.
#12
What is the function of the DME transponder in relation to aircraft?
To receive and process DME signals from ground stations
ExplanationDME transponders process signals from ground stations for aircraft.
#13
In the context of VORTAC facilities, what does TACAN stand for?
Tactical Air Navigation
ExplanationTACAN provides military navigation capabilities in VORTAC.
#14
Which of the following is NOT a component of a VORTAC facility?
Transponder interrogator
ExplanationVORTAC facilities do not include transponder interrogators.
#15
Which aircraft systems rely heavily on VOR and DME for navigation?
Commercial airliners
ExplanationCommercial airliners extensively use VOR and DME for navigation.
#16
What is the significance of the DME hold function?
It allows aircraft to maintain a fixed distance from a DME station
ExplanationDME hold function maintains fixed distance from a station.
#17
What is the primary drawback of relying solely on DME for navigation?
Limited availability of ground stations
ExplanationDependence on ground station availability is a primary drawback of DME.