Interested to Buy Any Domain ? << Click Here >> for more details...
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
What is force on a conductor in a magnetic field ?
why to use freewheeling diode ( diode in revers bias mode) across dc coil
Why back emf used for a dc motor? Highlight its significance.
How you give clearance to a spare feeder.
earth also having a gravitational force (magnetic field of north and south)but it attracts any object compare to this theartifical magnetic cant perform same as earth why?
Define stepper motor. What is the use of stepper motor?
what is the major difference between LIBBP & HIBBP.. which one is most preferable..
What is the two pole structure?
sir please send me previous year questions of jspl of electrical section through which i could prepare myself fpr the test.
what is Anti-pumping?
Why negative feedback is preferred in the control system?
Who are the manufactures those manufacturing 3Cx2.5sqmm FRLS cables. I heard about FRLS technology adopted only in wires useful for wirings
What is phenomenon of electromagnetic induction and how it works?
When calculation of fault current and fault Kva is to be done,why always we use per unit value and why we consider the base kva?
how to compute kAIC? with formulas...
