help needed to solve two problems in electrical engineering!!!

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Q. I am an undergraduate student of engineering technology. I need help to solve the following 2 questions for an electrical engineering assignment. I am studying through correspondence while holding a full time job and don't have access to a library. The prescribed text does not help much. I did some research on the Internet and was able to solve two other questions relating to power factor correction but not these. Can somebody help me to answer these questions? Q1. Show with a the aid of a phasor diagram that for both star and delta connected loads the active power is (root 3 VI Cos phi) where V and I are line quantities. Q2. A 200 KVA transformer has 800 turns on the primary and 160 turns on the secondary. the primary and secondary resistances are 0.3 ohms and 0.02 ohms, the corresponding leakage reactance are 1.1 ohm and 0.07 ohm respectively. If supply voltage is 2200V, calculate equivalent impedence referred to secondary and voltage regulation at 3/4 full load having a p.f of i) 0.85 lag and ii) 0.6 lead Also, Are there other resources on the net to help people like me studying on their own? (in general, not limited to electrical engineering alone) I will be very grateful to all who can help.

A. -Do we all get our name on your degree? The internet is a pretty good library, are you out in the country at the end of a # 9 iron phone wire? -For each - draw the phasor diagrams as suggested. Assume some phi between Vphase and I phase. draw and find Vline and Iline (how big are they compared to Vphase and Iphase)and determine the magnitude of their product (do for both Y and delta) with respect to the product of the phase values. Note- avoid the error of assuming phi is the angle between line current and voltage. It is a phase quantity (and you don't actually need it to solve this problem)

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