Electricity in Uttarakhand, just like the rest of India is 220-240 volts, alternating at 50 cycles per second. Any electrical equipment not accepting this electric current in Uttarakhand will need a voltage converter. The voltage converters are of three types and are easily available as well.
Depending upon the needs, one may choose between Resistor-network converters (for 50-1600 watts) or transformers (for 50-100 watts) or a combination of the two. With the help of these converters, your appliance will be compatible with the power and voltage of Uttarakhand.
There are basically two types of plug outlets in India, one with two round pins and the other with three round pins arranged in triangle. If your appliance uses any other type, you will need a plug adapter.
India, as a whole, experiences extreme electrical fluctuations and surges at times. So, never plug in your computer into any socket before asking about surge protection. If there are no built in stabilizers, the fluctuation surges can short your adapter or even destroy your computer.