Q 1 :    

An alternating current at any instant is given by $i=[6+\sqrt{56}\sin (100\pi t+\frac{\pi }{3}\left)\right]A$. The rms value of the current is _______ A    [2024]

Q 2 :    

An alternating voltage $V\left(t\right)=220$ $\sin$ $100\pi t$ 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 to the peak value is                [2024]

• 5 ms

   

• 3.3 ms

   

• 7.2 ms

   

• 2.2 ms