Electrical Guide contains everyday Electrical Engineering calculators useful for both students as well as professionals. Also it has International Standards for reference for practical applications in Engineering.

Also download Electrical Graphs app - This app shows phasor diagrams and waveforms for various electrical devices. Link-https://play.google.com/store/apps/details?id=com.engineeringresources.electricalguide.electricalgraphs

Electrical Guide Features :
Calculators:
+ Basic Electrical and Electronics
+ Star-Delta Transformation
+ Power Calculator
+ Transformer Calculator
+ KVAR Compensation (Powerfactor Improvement)
+ Resistor Color Code
+ Transmission Line Parameters
+ DC Machines Calculator
+ AC Machines
+ Voltage Drop Calculator
+ R, L, C Measurement Bridges
+ Power Electronics
+ Electrical Machine Design
+ Inverter/UPS Battery size Calculator
+ RLC Series/Parallel Circuits

Resources:
+ Indian Standards
+ NEC & NEMA Standards
+ Conductors and Insulators
+ Electrotechnical Terms and Definitions
+ International and British Standards for Copper and Aluminium
+ Measuring Instruments Comparision
+ Motor/Generator Ratings and Shaft Height

Do mail for any suggestions or error reporting.