A thyristor string is made of a no. of SCR connected in series and parallel. The string have volume and current of 11 KV and 4 KA. The voltage and current rating of available SCRs are 1800 V and 1000 A. For a string efficiency of 90 % let the number of SCRs in series and parallel are a and b respectively. Then the value of a and b will be________?
A4, 6
B7, 5
C6, 4
D5, 7
Correct answer
B. 7, 5
Explanation
The correct answer is 7, 5.