Difference between WATT & VA
Whats meaning of VA & watt??
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Administrator • Oct 29, 2012
Could you share the meaning that you've understood by referring to textbooks? I think you can get a basic idea about what VA and WATT are by referring basic electrical engineering textbook. It'd be really great if you could share what you've understood so that we can help you make your ideas clearer. I think would be a better way of learning, what do you say?mayurpawar85Whats meaning of VA & watt??Are you sure? This action cannot be undone. -
Member • Oct 29, 2012
here is the white paper which will clears the basic confusion k...Are you sure? This action cannot be undone. -
Member • Oct 29, 2012
VA (volt-amps) is used on AC equipment that is reactive - like transformers - to show the maximum load on the utility line.
This is done because reactive loads can have current flowing in and out of them - apparent power - but not necessarily use any real power. Nevertheless, the feed has to be sized to the apparent power.
VA and watts are related by the power factor. PF = W/VA
If I and V are perfectly in phase (as for a non-reactive load), the power factor is 1. If I is out of phase with V, then PF becomes less than 1: more apparent power than actual. Link below explains this further.
Small appliances tend to have little reactive behavior so they're simply rated in watts.
you can look after in below site also..
<a href="https://en.wikipedia.org/wiki/Power_factor" target="_blank" rel="nofollow noopener noreferrer">Power Factor</a>Are you sure? This action cannot be undone. -
Member • Oct 30, 2012
Watt is the actual power which is consumed by the device
The VA rating is the power which is not consumed by the device but it is linked with the device just as #-Link-Snipped-# said about transformersAre you sure? This action cannot be undone. -
Member • Oct 30, 2012
aruncharyVA (volt-amps) is used on AC equipment that is reactive - like transformers - to show the maximum load on the utility line.
This is done because reactive loads can have current flowing in and out of them - apparent power - but not necessarily use any real power. Nevertheless, the feed has to be sized to the apparent power.
VA and watts are related by the power factor. PF = W/VA
If I and V are perfectly in phase (as for a non-reactive load), the power factor is 1. If I is out of phase with V, then PF becomes less than 1: more apparent power than actual. Link below explains this further.
Small appliances tend to have little reactive behavior so they're simply rated in watts.
you can look after in below site also..
<a href="https://en.wikipedia.org/wiki/Power_factor" target="_blank" rel="nofollow noopener noreferrer">Power Factor</a>
Are sure VA is for power rating of reactive device ?
Because VAR (Volts ampere reaction) is the specific unit for reactive power.
VA for active power and WATT is for apparent power.Are you sure? This action cannot be undone. -
Member • Oct 30, 2012
sir i hav a doubt in that...in volt ampere we use sine angle (durin calculation)......... but for power factor we use cosine angle .....wat is the difference sir ????The_Big_KCould you share the meaning that you've understood by referring to textbooks? I think you can get a basic idea about what VA and WATT are by referring basic electrical engineering textbook. It'd be really great if you could share what you've understood so that we can help you make your ideas clearer. I think would be a better way of learning, what do you say?Are you sure? This action cannot be undone. -
Member • Oct 30, 2012
reacting device.......can u plz elaborate it ....grsalviAre sure VA is for power rating of reactive device ?
Because VAR (Volts ampere reaction) is the specific unit for reactive power.
VA for active power and WATT is for apparent power.Are you sure? This action cannot be undone. -
Member • Oct 30, 2012
Any device having a Capacitor and Inductor will react to the input alternating current and voltage given to the system and so these devices are called reactive devicesnaveeereacting device.......can u plz elaborate it ....Are you sure? This action cannot be undone. -
Member • Oct 30, 2012
go through pdf which i given as a reference.....Are you sure? This action cannot be undone.