Current Electricity and Electrical InstrumentHard
Question
A virtual current 4A and 50 Hz flows in an circuit containing a coil the power consumed in the coil is 240 W. If the virtual voltage across the coil is 100V then its inductance of coil will be :-
Options
A.
H
HB.
H
HC.
H
HD.
H
HSolution
P = vrms Irms cosφ
240 = 100 × 4 cosφ
cosφ =
∴ Z =
= 25
⇒ R = 15Ω
= 25Ω ⇒ XL2 = = 625 - 225 ⇒ XL = 20Ω
P = vrms Irms cosφ
240 = 100 × 4 cosφ
cosφ =
∴ Z = = 25
⇒ R = 15Ω
= 25Ω ⇒ XL2 = = 625 - 225 ⇒ XL = 20Ω
240 = 100 × 4 cosφ
cosφ =
∴ Z =
= 25 ⇒ R = 15Ω= 25Ω ⇒ XL2 = = 625 - 225 ⇒ XL = 20ΩP = vrms Irms cosφ
240 = 100 × 4 cosφ
cosφ =
∴ Z =
= 25 ⇒ R = 15Ω= 25Ω ⇒ XL2 = = 625 - 225 ⇒ XL = 20ΩCreate a free account to view solution
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