question_answer

Consider the following statements:

1. Pulverised fuel gives high and controlled burning rate.

2. Insufficient air causes excessive smoking of exhaust.

3. Excess air is provided to control the flue gas temperature

4. Effect of sulphur in fuel is to give high heat transfer rate.

Witch of these statements are correct?

A) 3 and 4            

B) 2 and 3

C) 1 and 2            

D) 1 and 4