Electronics and Communication Engineering - Networks Analysis and Synthesis - Discussion
Discussion Forum : Networks Analysis and Synthesis - Section 27 (Q.No. 5)
5.
In an R-L-C circuit, v(t) = 20 sin (314 t + 5 p/6) and i(t) = 10 sin (314 t + 2p/3). The p.f of the circuit is
Discussion:
2 comments Page 1 of 1.
Gitanjali d. said:
1 decade ago
Ph difference between V & I is (pi/6).
Cos(pi/6) = 0.866.
(5pi/6) is > (4pi/6).
So current lagging.
Cos(pi/6) = 0.866.
(5pi/6) is > (4pi/6).
So current lagging.
Ramareddy said:
1 decade ago
2p/3-5 p/6 = -30 degrees. lagging pf : cos 30 = 0.866.
That's why answer B.
That's why answer B.
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers