Download the app

Alternating Current and voltage

Remember concepts with our Masterclasses.

80k Users
60 mins Expert Faculty Ask Questions
Question

Variation of voltage with time is shown in figure.

The rms voltage is found to be ,N23V. Find N.

Moderate
Solution

In such cases it is difficult to develop a single equation.

Hence, it is usual to consider two equations, one applicable from 0 to 1 ms and another from 1 to 2 ms.
For t lying between 0 and 1 ms, V1 = 4. For t lying between 1 and 2 ms, V2 = -4t+4.

(a) Vrms=1201V12dt+12V22dt

Vrms2=120142dt+12(-4t+4)2dt

=1216t01+16t3312+|16t|12-32t2212=323

Vrms=323=423V. Hence N = 4


Ready to Test Your Skills?

Check Your Performance Today with our Free Mock Tests used by Toppers!

Talk to our academic expert!

+91

Are you a Sri Chaitanya student?


ctaimg

Create Your Own Test
Your Topic, Your Difficulty, Your Pace


Similar Questions

A current is made up of two components 3A DC component and AC component given by I=4 sinωt. The effective value of current is


phone icon
whats app icon