ATSEp: NavAids (DME, DVOR, SBS, OBN) UPDATED ACTUAL Questions and CORRECT Answers

ATSEp: NavAids (DME, DVOR, SBS, OBN)
UPDATED ACTUAL Questions and
CORRECT Answers
b. interrogator - CORRECT ANSWER - DME airborne equipment is also called
a. transponder
b. interrogator
c. transmitter
d. receiver


a. transponder - CORRECT ANSWER - DME ground equipment is called
a. transponder
b. interrogator
c. transmitter
d. receiver


c. both a & b - CORRECT ANSWER - Transponder equipment consist of
a. transmitter
b. receiver
c. both a & b
d. none of the above


c. 1 NM - CORRECT ANSWER - 12.36 us time in DME is equivalent to
a. 2 NM
b. one way trip distance
c. 1 NM
d. none of the above

,b. 126 - CORRECT ANSWER - The total channel for interrogation is
a. 63
b. 126
c. 252
d. none of the above


c. 36 - CORRECT ANSWER - Pulse spacing for Y-channel interrogation in microseconds
a. 12
b. 30
c. 36
d. 24


d. both a & b - CORRECT ANSWER - 7. DME transponders are collocated with VOR
with respect to
a. frequency
b. identification
c. power
d. both a & b


b. increases - CORRECT ANSWER - As the distance to DME station decreases, the slant
range error
a. remains constant
b. increases
c. decreases
d. is insignificant


c. both a & b - CORRECT ANSWER - The time as measured between the 90 and 10
percent amplitude points
of the pulse

, a. rise time
b. decay time
c. both a & b
d. pulse duration


b. pulse spacing - CORRECT ANSWER - The time interval between the 50% amplitude
points on the leading
edges of the pulses
a. pulse duration
b. pulse spacing
c. pulse width
d. none of the above


b. PRF - CORRECT ANSWER - Is the frequency which each pulse pair has
a. PPS
b. PRF
c. PFR
d. none of the above


b. search mode - CORRECT ANSWER - The condition which exists when the interrogator
is attempting to
acquire and lock onto the response to its own interrogations.
a. track mode
b. search mode
c. PRF
d. none of the above


c. duty cycle - CORRECT ANSWER - The time the transmitter is activated to send reply
pulses