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In an A.C. circuit maximum voltage and maximum currents are 200 V and 2.2A respectively. Calculate power and power factor in the circuit. (Here X_C=60 Omega and R=80 Omega ) |
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Answer» <P> SOLUTION :Here, `V_m`=200 V, `I_m`=2.2A , `X_C=60Omega,R=80 Omega``|Z|=sqrt(R^2+X_C^2)` `=sqrt((80)^2+(60)^2)=sqrt(6400+3600)` `=sqrt10000` `therefore |Z|=100 Omega` power factor `cosdelta=R/"|Z|"=80/100` `therefore cos delta=0.8` `therefore` Power consumed in the circuit `P=V_m/sqrt2. I_m/sqrt2 "cos" delta` `therefore P=(V_mI_m)/2 "cos" delta` `therefore P=(200xx2.2xx0.8)/2 therefore` P=176 W |
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