Question

An alternating voltage is mathematically expressed as: v = 141.42 sin (157.08 t + /2) volts. Find its effective value, frequency and periodic time.

Answer 1

Answer:

effective voltage=maximum voltage/√2

=141.42/√2=99.99 V

frequency=omega/(2*pi)= 157.08/(2*3.14)=25.01Hz

periodic time=1/frequency=1/25.01=0.0399 s=0.04s

Answer 2

Answer:

Angular frequency is nothing but coefficient of t in the equation,

so we have ω=100π or 2πf=100π, we get f=50Hz

rms voltage is

2

peak voltages

=100

2

/

2

=100V.

Answer is 100v,50Hz

THIS IS YOUR CORRECT ANSWER NOT THIS

Explanation:

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