Answer / suribabu

while dealing with transformer as inductors are short
circuit for dc so the ip of transformer should ac for
amplification
we are having 3 types of powers
active :vicos@
reactive:visin@

apparent:vi
as inductors are storage elemets no power dissipates so
apparent power is 0 so tfr readings r in var

Answer / g.l.a ites

the heat generated in a winding as well as the eddy current
losses generated in a transformer core depend on the current
only, regardless of whether it aligns with the voltage or
not. Therefore the heat is always proportional to the square
of the current amplitude, irrespective of the phase angle
(the shift between voltage and current). So a transformer
has to be rated (and selected) by apparent power

why digital signals are preferred over analog in com?

7 Answers  

---

Draw the two transistor model of scr and derive an expression for anode current?

0 Answers  

---

What is ssb modulation?

0 Answers  

---

what do you want to join this bank

0 Answers   HDFC,

---

Define what is the effect of temperature on the reverse current of a p-n junction?

0 Answers  

---

Interview questions for ITC Ltd for ECE stream

0 Answers  

---

Tell me why 440 volts instead of 660 volts in 3 phases of supply system?

0 Answers  

---

WHY THE CUTOFF FREQUENCY IS OF 3 DB??

1 Answers   TCS,

---

Define what happens to the series current , load current and zener current when the dc input voltage of a zener regulator increases?

0 Answers  

---

Why is silicon preferred over germanium in the manufacture of semiconductor devices?

0 Answers  

---

about microprocessor and microcontroller

4 Answers  

---

What is the Difference betn IBS & REPEATER?

0 Answers   Videocon,

---