Recent content by spiky

i think i sort of got it. . thanks.but any more illuminating explanations are welcome.

Hello, suppose we have a sinusoidal AC source connected to only a pure inductor of self inductance L ( no resistance at all ) ..then emf induced in the inductor is L * dI/dt and is equal and opposite to the applied emf. but if the induced emf opposes the applied emf , then how can there be a...

thanks a lot guys.

ofcourse, but what will it be if only magnitude is considered ? . What will the average value represent in a full wave rectified signal ? It certainly does not represent DC value as rms value does that.

[SOLVED] Significance of Average value of a AC signal Hello, I would like to know the significance of average value in a AC circuit. Let's consider a sinusoidal ac source with only a resistor in the circuit. The rms value of voltage and current indicate the equivalent DC value which would...

ok . thanks

i think a divergent part is added so that steam expands along the axis of the nozzle and hence velocity further increases. But in the convergert part , as steam approaches the throat why does the pressure drop( and the enthalpy drops , why ? ) ? logic tells me that the pressure should increase .

thanks. temperature remains constant . ok. once the steam enters a c-d nozzle , the velocity of flow increases as the mass flow rate remains constant. .why is the pressure decreasing ? Could you elaborate more on enthalpy , particularly how it decreases while reaching the throat ? To make...

Hello, For sometime now I've been into electronics and i have forgotten most of my meager knowledge in thermodynamics. . Could you explain how a convergent-divergent nozzle works ? Steam at high temperature and high pressure but relatively low speed enters into the nozzle. Then why...