Question

Which of the following components improves the plant efficiency?

          1. Economizer               2. Air preheater           3. Condenser               4. Forced draught fan

         Select the correct answer from the codes  given below

(a) 1 and 2 only              (b) 2 and 3 only           (c) 1, 2 and 3               (d) 1, 2 and 4