The voltage of an $ac$ source varies with time according to the equation $V = 100\sin \,\left( {100\pi t} \right)\cos \,\left( {100\pi t} \right)$ where $t$ is in seconds and $V$ is in volts. Then
The peak voltage of the source is $100\,volts$
The peak voltage of the source is $50\,volts$
The peak voltage of the source is $100/\sqrt 2\,volts$
The frequency of the source is $50\,Hz$
The $r.m.s$. voltage of the wave form shown is......$V$
If an $AC$ main supply is given to be $220\,V$. The average $emf$ during a positive half cycle will be.....$V$
An alternating voltage $v\left( t \right) = 220\,\sin \,100\pi l\,volt$ is applied to a purely resistive load of $50\,\Omega $ . The time taken for the current to rise from half of the peak value of the peak value is.....$ms$
The peak voltage of the ac source is equal to:
The $r.m.s.$ voltage of the wave form shown is