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bob251

Hi I have my 2330-301 coming up and its time I got these formulas I been stuck on out the way could you please help me by working it out and telling me how you done it, I will seriously appreciate it, thanks alot!

The air gap in a conductor is 25mm squared, the flux density is 1.5 T. calculate the total flux.

How many numbers of turns are needed on a transformer if the primary windings are 1000 and the primary and secondary current are 5A and 20A respectively.

A transformer has an output of 12 KVA and a power factor of 0.9. The total losses in the transformer are 600w. What is the effeciency of the transformer?

A transformer takes a load of 50 KVA with an input of 37 KW. What is the total power factor?

A transformer takes a load of 25 KVA at a power factor of 0.8. Calculate the input in KW.

A small heating circuit draws 1.5 KW of power and has an internal resistance of 0.5 ohms. What is the total current?

The resistance of a 230V 3 KW wall mounted heater will be?

If a current of 200 mA flows into a capaciator for 40mS, how much charge will develop in the capaciator?

A medium sized factory has a three phase load of 50 KVA and 30 KVAr, calculate the power factor.
 
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