Answer Posted / md ahmeduddin farooqi
At the usual radio frequencies, propagating electromagnetic
energy does not follow the earth's surface. Line-of-sight
communication has the transmitter and receiver antennas in
visual contact with each other. Assuming both antennas have
height h above the earth's surface, maximum line-of-sight
distance is
dLOS=2\2hR+h2≈2\2Rh (1) where R is the earth's
radius ( 6.38×106m).
| Is This Answer Correct ? | 3 Yes | 0 No |
Post New Answer View All Answers
how i can calculate the size for fire cable
WHY RATING OF VCB NOT LESS THAN 630A
why ahould you show client/engineer activities clearly on the project plan
i need project topics along with circuit diagram in the electrical and electronics engg and also some websites regarding projets.
WHAT IS THE MEANING OF BALANCED / UNBALANCED IN STABILIZER TYPES.
what is cathodic protection and why it use in industries?
Installation method of self treated earth electrode.
If VFD is On but no starting commond on it. so how many outpout voltages of VFD
i want to know d working mechanism of tafe tractors next i like to know d engine type of apache bighs can anyone help me
how brushed dc motor operating ?
After completing iti in electrician, how can i get certificate of electrical supervisor? What ia requirements. For it?
what is the requirement regarding earthing of Single conductor with AWA
what will happen if synchronous machine rotor fed from single phase ac supply
Difference between megger test equipment and contact resistance meter test instruments?
for hipot test on 33kV busbar, we will test on 70 kV or 56kV, what is the acceptable leackage current?
