An electric motor operates at full-load of 100 KW for 10 min, at 1 / 2 load for next 20 min, no-load for the next 20 min and this cycle repeats continuously. Find the continuous rating of the suitable motor.
1
\(\sqrt {1000} \;kW\)
2
\(\sqrt {300} \;kW\)
3
\(\sqrt {3000} \;kW\)
4
75 kW