Answer / rajneesh

Free wheeling diodes are used whenever inductive loads are
switched off by silicon components: in relay drivers,
H-bridge motor drivers, and so on. A switched-mode power
supply also exploits this effect, but the energy is not
dissipated to heat but used for pumping additional charge
through the load.
this is the reason......

Answer / ranjith

In order to avoid the ripples in the circuit

Answer / karpagam

Freewheeling diode improves the input power factor by avoiding voltage reversal.This diode safely dissipates the energy stored in the inductive load when the thyristor is turned off.

Answer / himanshu srivastava

During the positive half cycle inductor charge as same as the polarity of the dc output voltage. When the negative half cycle started, the inductor will act as a source and it will make the freewheeling diode forward bias. Hence the output voltage become zero and the inductor current will gradually reduce. So that in the output, the current will be there even the output voltage is zero.

Answer / sachin kumar airan

avoid from nagative voltages at the output.to improvement
of powerfactor.to avoid the current flow in reverse
direction.

Answer / mrunali

As name indicates the free wheeling diod gives free moment
to the current through the inductor while discharging mode
of operation. it reducess the voltage loss in the inductive
load.

What is the meaning of dedicated earthing?

0 Answers   Dabur,

what is the job description of a LOW CURRENT ELECTRCIAL ENGINEER in a industry?

1 Answers   BTAT, Powercraft, Prince Glass, Sterling,

What are the earth resistance Standards of 66kv sub stations according to indian norms.

2 Answers  

wht do u mean by constant flux linkage theorem ?

3 Answers  

if an induction motor is operated at unity power factor what will happen? will motor run or not? kindly describe a logical answer?

2 Answers  

my 10 hp submersible pump is tripping when connected through ELCB.I have checked the megger value of the coil's with body.It was found to be 0.2mega ohm.that is leakage is there.But when connected to mccb it is not tripping.no leakage current in the motor.Is it safe to connect to mccb? what are the problem's will arise if future?also tell me in ELCB no neutral is connected to motor.than how ELCB was working?

1 Answers  

Mention how NPN and PNP transistor works?

0 Answers  

Why the airgap of an induction motor is less compared to that of a synchronous machine?

4 Answers   MGVCL, RRB, WebTech,

what is meant by reactive power ,active power & real power ? thank you

2 Answers  

what should be the BDV value Of 11/132kv power transformer

3 Answers  

Why use in ht motore

0 Answers   ACB Group,

impliment (AB)`+C to transistor representation

0 Answers   Ascent,