Consider the following statements:
1. Recycling exhaust gases with intake increases emission of oxides of nitrogen from the engine.
2. When the carburetor throttle is suddenly opened, the fuel-air mixture leans out temporarily causing engine stall.
3. The effect of increase in altitude on carburetor is to enrich the entire part throttle operation.
4. Use of multiple venturi, system makes it possible to obtain a high velocity air stream when the fuel is introduced at the main venturi throat.
Which of these statements are correct?
Option (A)
1 and 3
Option (B)
1 and 2
2 and 3
2 and 4
Correct Option:
Question Solution:
Exhaust gas recirculation reduces the peak temperature so it reduces the NOx formation