Ola Electric Mobility Associate Software Engineer Interview Questions and Answers

Static keyword is used in programming to declare variables, methods, or classes that belong to the class itself rather than instances of the class.

• Static variables are shared among all instances of a class

• Static methods can be called without creating an instance of the class

• Static classes cannot be instantiated and are used for grouping related methods or constants

• Static keyword is also used in C to declare functions t

Engine working refers to the process of converting fuel into mechanical energy to power a vehicle or machine.

• Fuel is ignited in the combustion chamber, creating high-pressure gases that push the pistons down.

• The pistons are connected to the crankshaft, which converts the up-and-down motion into rotational motion.

• The rotational motion is transferred to the transmission, which then powers the wheels or other machinery.

• Th...read more

A 4-stroke diesel engine works on the principle of internal combustion, where fuel is ignited by compressed air.

• Intake stroke: air is drawn into the cylinder

• Compression stroke: air is compressed, raising its temperature

• Power stroke: fuel is injected and ignited, causing a rapid expansion of gases and pushing the piston down

• Exhaust stroke: the piston pushes the exhaust gases out of the cylinder

• Diesel engines are more fu...read more

There are several types of engines, including internal combustion, electric, hybrid, and rotary engines.

• Internal combustion engines are the most common and include gasoline and diesel engines.

• Electric engines use electricity to power the vehicle and are becoming more popular.

• Hybrid engines combine both internal combustion and electric engines.

• Rotary engines are less common and use a unique design to generate power.

• Othe...read more

A value timing diagram is a graphical representation of the timing relationship between input and output signals.

• It shows the timing relationship between input and output signals

• It is used to analyze the behavior of digital circuits

• It helps in identifying timing violations and optimizing circuit performance

• It consists of a horizontal time axis and vertical voltage axis

• Examples include setup and hold time diagrams for f

The 3 main engine systems are fuel, ignition, and cooling.

• Fuel system: responsible for delivering fuel to the engine

• Ignition system: responsible for igniting the fuel-air mixture

• Cooling system: responsible for regulating the engine temperature

• Examples: gasoline engine, diesel engine, hybrid engine