Answer / 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).

what is meant by loss of field in a DC motor? how a universal motor works?

0 Answers  

---

What type of changeover switch needed to run a load of five 1.5 tonn ACs.

1 Answers  

---

I have 1 KW, 3ph. 440v, 50 hz, cos(phi) .75, efficiency 75%(star delta connection)Motor. How to calculate line current & Phase current (1) Star connection (2) delta Connection

2 Answers  

---

why weight is put on pulley?

1 Answers  

---

For a CT the number of turns in the primary winding is.........

5 Answers  

---

what is the meaning of TRF

1 Answers   Khidmah,

---

Differentiate between voltage and current feedback in amplifiers?

0 Answers  

---

What is class ab operation?

0 Answers  

---

What about electrical Units. discrive in detail

0 Answers  

---

I want d.g.set our company

0 Answers  

---

What is rotary phase converter?

0 Answers  

---

What is the problem, if a circuit breaker is not closing.

4 Answers   KSEB, L&T, Siemens,

---