pv solar question

Which one is the correct unit of total energy requirement

• W

• v

• WH

• AH

which formula is used to size battery size

• system voltage X current

• Total energy requirement /System design voltage

• power X time

• Total system energy requirement / peak sun hours

what is peak sun hours (PSH)

• Number of hours the sun intensity averages 1000w/msq

• number of sunny hours per day

• number of hours the load is used per day

• days of autonomy

The following is the recommended Depth of discharge for Gel type batteries

• below 80%

• not more than 50%

• not more than 5%

• above 80%