Assuming a straight line V – I characteristics for a dc welding generator short - circuit current as 400 A and open circuit voltage as 100 V, which one of the following is the correct voltage and current setting for maximum are power?
(a) 400 A and 100 V
(b) 200A and 100 V
(c) 400 A and 50 V
(d) 200 A and 50 V