Answer / ehtesham ali khan

The problem in the TRF receiver are solved in this receiver.
it converts RF signals to a lower frequency IF signal.
The radio & Tv receivers works on th principle.

No variations in bandwidth.
high sensitivity and selectivity
high adjacent channel rejection.

how we can save electrical energy in industries,please give some inputs

3 Answers  

---

What is vector group? What is meant by DYN11?Why is it needed?

13 Answers   Areva, Bhel, BRG, Escorts, Fortis,

---

what is the working principle of smoke detector in fire alarm system

2 Answers   Vijaya Bank,

---

how can we chacke adiod in a circuit

2 Answers  

---

Simple explanation of kirchoff's law

2 Answers  

---

What is auto transformer?

28 Answers   ABC, Transformers and Electricals, US Consulate,

---

is earthing is necessary if we use armoured cable

1 Answers   ABB, Schwing Stetter, Siemens,

---

Why are some relay circuts designed to have the ct current flow through the neutral instead of the phase wire, such as in some diff relays?

1 Answers  

---

what is softstarter?

2 Answers  

---

what is the formula for calculate the turns in Transformers

2 Answers  

---

define hysteresis loss, eddy current loss and windage loss

0 Answers  

---

how wecalculate breaking capcity of acb mcb mccb .explain with example

0 Answers   C&S, L&T,

---