Q1. The time from transmission of interrogation pulse to the receipt of the reply from DME ground is 2000microsecs{ignore delay in dme}The slant range is:
a. 330nm
b. 185nm
c. 165nm...ANS
d. 370nm
this is simple formula based.
distance= speed * time.
= (3*10^8)*(2000*10^-6)
=600,000m
=(600,000*3.28)/6080 Nm
=323.68Nm
but note time of transmission and reception is given i.e twice the distance. hence actual distance is 323.68/2 = 161.8Nm.