DLF Senior QA QC Engineer Interview Questions and Answers

Engine function for heavy machines involves converting fuel into mechanical energy to power the machine.

• Fuel is injected into the engine's combustion chamber

• The fuel ignites and creates a controlled explosion

• The explosion pushes a piston, which turns a crankshaft

• The crankshaft converts the linear motion of the piston into rotational motion

• The rotational motion powers the machine's hydraulic system or driveshaft

• Examples...read more

Common faults in engines and gears.

• Engine faults: overheating, low oil pressure, misfiring, knocking, stalling.

• Gear faults: slipping, grinding, difficulty shifting, noisy operation.

• Examples: worn piston rings, damaged bearings, worn synchros, damaged gears.

• Regular maintenance and inspections can prevent many faults.

• Proper lubrication and fluid levels are crucial for engine and gear health.