A 1000 kVA transformer has primary and secondary turns of 400 and 100 respectively
and induced voltage in the secondary is 1000V. Find (i) the primary voltage, (ii) the
primary and secondary full load current, (iii) the secondary current when 100 KW load at
0.8 pf is connected at the output
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Answer:
given--
Np=4000
P=1000000VA
Ns=1000
Vs=1000
Ns/Np=Vs/Vp=k (turns ratio)
P=VICos(theta) where p.f.= cos(theta)=.8
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