If an AC main supply is given to be 220,V. Th | vedclass

Name: PDF Generator App | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

$\mathrm{E}_{\mathrm{rms}}=220 \mathrm{V}$

$	herefore \mathrm{E}_{\mathrm{rms}}=\frac{\mathrm{E}_{0}}{\sqrt{2}} \Rightarrow \mathrm{E}_{0}=\sqrt{2

Vedclass · Accepted Answer

$198$

Vedclass · Answer

$\mathrm{E}_{\mathrm{rms}}=220 \mathrm{V}$

$	herefore \mathrm{E}_{\mathrm{rms}}=\frac{\mathrm{E}_{0}}{\sqrt{2}} \Rightarrow \mathrm{E}_{0}=\sqrt{2} \mathrm{E}_{\mathrm{rms}}$

Average e.m.f over half cycle

$=\frac{2}{\pi} \mathrm{E}_{0}=0.637 	imes 1.41 	imes 220=198.15 \mathrm{\,V}$

If an $AC$ main supply is given to be $220\,V$. The average $emf$ during a positive half cycle will be.....$V$

Similar Questions

A $280$ ohm electric bulb is connected to $200V$ electric line. The peak value of current in the bulb will be

The alternating current is given by

${i}=\left\{\sqrt{42} \sin \left(\frac{2 \pi}{{T}} {t}\right)+10\right\} {A}$

The $r.m.s.$ value of this current is ${A}$

An $AC$ source rated $220\, V , 50\, Hz$ is connected to a resistor. The time taken by the current to change from its maximum to the rms value is

The direct current which would give the same heating effect in an equal constant resistance as the current shown in figure, i.e. the $r.m.s.$ current, is.....$A$

Alternating current can not be measured by dc ammeter because