Internal Combustion Engines
The air requirement of a petrol engine during starting compared to theoretical air required for complete combustion is

Same
May be more or less depending on engine capacity
Less
More

ANSWER DOWNLOAD EXAMIANS APP

Internal Combustion Engines
Scavenging air in diesel engine means

Air used for combustion sent under pressure
Air used for forcing burnt gases out of engine's cylinder during the exhaust period
Forced air for cooling cylinder
Burnt air containing products of combustion

ANSWER DOWNLOAD EXAMIANS APP