$A$ generator produces a voltage that is given by $V = 240 \sin(120t)$,where $t$ is in seconds. The frequency and $r.m.s.$ voltage are:

  • A
    $60 \text{ Hz and } 240 \text{ V}$
  • B
    $19 \text{ Hz and } 120 \text{ V}$
  • C
    $19 \text{ Hz and } 170 \text{ V}$
  • D
    $754 \text{ Hz and } 70 \text{ V}$

Explore More

Similar Questions

Find the time required for a $50 \text{ Hz}$ alternating current to reach its $rms$ value from zero. (in $\text{ ms}$)

$A$ $10\, \Omega$ resistance is connected across $220\, V - 50\, Hz$ $AC$ supply. The time taken by the current to change from its maximum value to the rms value is $....\, ms$.

Difficult
View Solution

In an $AC$ circuit,the current is given by $I = 100 \sin(200 \pi t)$. The time required for the current to achieve its peak value will be:

An alternating e.m.f. is $e = e_0 \sin \omega t$. In what time will the e.m.f. reach half its maximum value,if $e$ starts from zero? ($T$ = time period)

One complete set of negative and positive values of alternating quantities is called

Vedclass Products

For Students

Vedclass Test Series

Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.

Start Free Trial
For Teachers

Exam Paper Generator

Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.

Try Free
For Institutes

Online Exam Module

Live online exams with unlimited students, 360° analytics & white-label branding.

See Demo