Internal Combustion Engines
Fuel consumption of diesel engines is not guaranteed at one quarter load because at such low loads

The small difference in cooling water temperature or in internal friction has a disproportionate effect
The engine is rarely operated
The friction is unpredictable
The friction is high

ANSWER DOWNLOAD EXAMIANS APP

Internal Combustion Engines
The purpose of testing an internal combustion engine is

To conform the data used in design, the validity of which may be doubtful
To determine the information, which cannot be obtained by calculations
To satisfy the customer regarding the performance of the engine
All of these

ANSWER DOWNLOAD EXAMIANS APP

Internal Combustion Engines
In a four stroke cycle petrol engine, the compression

Starts at bottom dead centre and ends at top dead centre
Starts at 40° after bottom dead centre and ends at 30° before top dead centre
May start and end anywhere
Starts at 40° before bottom dead centre and ends at 30° after bottom dead centre

ANSWER DOWNLOAD EXAMIANS APP

Internal Combustion Engines
In a four stroke cycle petrol engine, the inlet valve

Opens at top dead center and closes at bottom dead center
Opens at 20° after top dead center and closes at 20° before bottom dead center
May open or close anywhere
Opens at 20° before top dead center and closes at 40° after bottom dead center

ANSWER DOWNLOAD EXAMIANS APP