A series AC circuit containing an inductor (20 mH), a capacitor (120 
and resistor (60
) is driven by an AC source of 24V/50Hz. The energy dissipated in the circuit in 60 s is:
a.
2.26x103 J
b.
3.39x103J
c.
5.65x102J
d.
5.17x102J
and resistor (60 ) is driven by an AC source of 24V/50Hz. The energy dissipated in the circuit in 60 s is:a.
2.26x103 J
b.
3.39x103J
c.
5.65x102J
d.
5.17x102J
Question ID - 50147 | SaraNextGen Top Answer A series AC circuit containing an inductor (20 mH), a capacitor (120 and resistor (60 ) is driven by an AC source of 24V/50Hz. The energy dissipated in the circuit in 60 s is:
a.
2.26x103 J
b.
3.39x103J
c.
5.65x102J
d.
5.17x102J
A series AC circuit containing an inductor (20 mH), a capacitor (120 and resistor (60 ) is driven by an AC source of 24V/50Hz. The energy dissipated in the circuit in 60 s is:
|
a. |
2.26x103 J |
b. |
3.39x103J |
|
c. |
5.65x102J |
d. |
5.17x102J |
1 Answer
127 votes
Answer Key / Explanation : (d) -
R=60
f=50Hz, 
Xc = 
=
Xc=26.52
XL=
=100
Xc=XL=20.24
=
z = 20
cos
=
Pavg =VI Cos 
I=
=
Cos 
=8.64 watt
Q = P.t = 8.64
127 votes
Answer Link
127