k 40 antenna

When free space is the communication channel, antennas radiate and receiver the signal. Theory shows that the antennas operate effective only when their dimensions are of the order of the magnitude of wavelength of the signal being transmitted...

solution for which specific conductance at 25 o C has been accurately found to be 0.002765 Ohm - 1 cm - 1 . Specific conductance is cell constant multiplied by conductanc..

If the order of the differential equation 5( y ″) 5 + 10 y ′ + 40 y = 0 is k , then find the value of k 2 + 5 k . => 50 or 14 or 30 or 10..

Find the rate of change of g ( k ) = 160 2 k + 1 2 with respect to k at k = 2. => 0 or 40 or 20 or 1 4 or 1 40..

∑ k=5 8 ( - 1 3 ) k - 1 = ? => 40 2187 or 4 243 or 1 2187 or 20 2187 ..

OB → is the angular bisector of ∠ AOC. Find the value of k . => 60 or 40 or 30 or 10..

In certain pairs of elements like, Ar (40) and K (39); Co (58.9) and Ni (58.6); Te (127.6) and I (126.9) the arrangement was not justified. For e.g., argon was placed before potassium whereas its atomic mass is more than potassiu..

Let us now discuss the basic principles of wireless radio communications. We shall mainly concentrate on the principle of amplitude modulation and demodulation. The simplest scheme of wireless communication would be to convert the speech or music to be transmitted to electric signals using a microp..

The AM radio waves which propagate from one point to another following the surface of Earth are known as ground waves or surface waves. This type of propagation is called ground wave propagation or surface wave propagation. In ground wave transmission, the intensity of the signal falls with distan..

Direct hydration of ethylene is done in the presence of phosphoric acid as catalyst. At a temperature of 770K and 45600 mm of Hg pressure, ethylene and water vapor are passed into a reactor containing solid phosphoric acid..