Consider the following statements :
1. For a Diesel cycle, the thermal efficiency decreases as the cut off ratio increases.
2. In a petrol engine the high voltage for spark is in the order of 1000 V.
3. The material for centre electrode in spark plug is carbon.
Which of the statements given above is/are correct ?
Option (A)
Only 1
Option (B)
Only 1 and 2
Only 2 and 3
1, 2 and 3
Correct Option:
Question Solution:
The range of voltage at spark plug is around 40,000V to 100,000V
The material of electrode is special nickel alloy