Which of the following statements are correct for synchronous motors?
1. Synchronous motors are well-suited for direct connection top reciprocating compressors.
2. Over-excited synchronous motors are most commonly used for power factor improvement.
3. Synchronous motors are generally used for current regulation of long transmission lines
Select the correct answer using the code given below.
1. 1, 2 and 3
2. 1 and 3 only
3. 1 and 2 only
4. 2 and 3 only