20+ Diploma Automobile Engineer Interview Questions and Answers

Cylinder gasket heads are typically made of materials like graphite, asbestos, or metal.

• Graphite is a common material used in cylinder gasket heads due to its excellent sealing properties.

• Asbestos was previously used in gaskets but has been phased out due to health concerns.

• Metal gaskets, such as those made of steel or aluminum, are also used in certain applications.

• Other materials like rubber or composite materials may be used depending on the specific requirements of the en...read more

Oil pan gaskets are typically made from materials such as rubber, cork, silicone, or a combination of these.

• Rubber is a common material used in oil pan gaskets due to its flexibility and resistance to oil and heat.

• Cork is another material used in gaskets as it provides a good seal and is resistant to oil and chemicals.

• Silicone gaskets are known for their durability and ability to withstand high temperatures.

• Some gaskets may be made from a combination of these materials to pro...read more

There are several types of gaskets used in automobiles for various purposes.

• Cylinder head gasket

• Exhaust manifold gasket

• Intake manifold gasket

• Valve cover gasket

• Oil pan gasket

• Water pump gasket

• Transmission gasket

• Differential gasket

• Timing cover gasket

• Turbocharger gasket

There are various types of engines based on the number of cylinders.

• Engines can have 1, 2, 3, 4, 5, 6, 8, 10, 12, or even more cylinders.

• The number of cylinders affects the engine's performance, power, and fuel efficiency.

• Examples include inline engines (4-cylinder), V engines (6-cylinder), and W engines (12-cylinder).

Automotive differential is a device that allows wheels to rotate at different speeds while maintaining power to both wheels.

• It is located between the drive wheels of a vehicle.

• It consists of a set of gears that allows the wheels to rotate at different speeds.

• It works by taking power from the engine and splitting it between the two wheels.

• It allows the outer wheel to rotate faster than the inner wheel during a turn.

• It is essential for smooth turning and preventing tire wear.

• Ex...read more

Separate exhaust systems enhance performance and reduce noise in multi-cylinder engines.

• Each manifold directs exhaust gases from its respective cylinder bank.

• Improves engine performance by reducing back pressure.

• Allows for better tuning of exhaust sound and emissions.

• Example: V engines (V6, V8) often use this setup for efficiency.

• Can lead to more complex exhaust routing and increased weight.

Governor regulates the speed of the engine and prevents it from exceeding the maximum limit.

• Governor is a device that controls the fuel supply to the engine.

• It maintains a constant speed of the engine by adjusting the fuel supply.

• It prevents the engine from exceeding the maximum limit of speed.

• Governor is used in automobiles, generators, and other machines that require a constant speed.

• Types of governors include centrifugal, pneumatic, and hydraulic governors.

Yes, the flywheel is used as a part of a mechanism.

• The flywheel is a mechanical device used to store rotational energy.

• It is typically used in engines to maintain a steady rotational speed and provide smooth power delivery.

• In automobiles, the flywheel is connected to the crankshaft and helps in starting the engine, storing energy during deceleration, and providing rotational inertia.

• It also helps in reducing engine vibrations and maintaining a consistent speed during gear cha...read more

There are several types of manifold gaskets used in automobile engines.

• Exhaust manifold gaskets

• Intake manifold gaskets

• Throttle body gaskets

• EGR (Exhaust Gas Recirculation) gaskets

• Turbocharger gaskets

• Supercharger gaskets

Pump gaskets are made of various materials.

• Pump gaskets can be made of rubber, cork, paper, or metal.

• Rubber gaskets are commonly used due to their flexibility and resistance to fluids.

• Cork gaskets are known for their compressibility and ability to seal irregular surfaces.

• Paper gaskets are used in low-pressure applications.

• Metal gaskets, such as those made of steel or copper, are used in high-temperature and high-pressure environments.

Natural gas is used as an alternative fuel in automobiles to reduce emissions and save costs.

• Natural gas is a cleaner burning fuel compared to gasoline or diesel.

• It produces fewer emissions of harmful pollutants like carbon monoxide, nitrogen oxides, and particulate matter.

• It is cheaper than gasoline or diesel, making it a cost-effective alternative fuel.

• Natural gas can be used in compressed natural gas (CNG) vehicles or converted into liquefied natural gas (LNG) for use in h...read more

There are two types of air cleaners: mechanical air cleaners and electronic air cleaners.

• Mechanical air cleaners use filters to trap dust and other particles from the air.

• Electronic air cleaners use an electric charge to attract and trap particles.

• Examples of mechanical air cleaners include panel filters, pleated filters, and HEPA filters.

• Examples of electronic air cleaners include electrostatic precipitators and ionizers.

SAE stands for Society of Automotive Engineers.

• SAE is a professional organization for engineers in the automotive industry.

• SAE sets standards for various aspects of automotive engineering, including oil grades.

• Oil grade SAE refers to the viscosity of the oil, which is a measure of its resistance to flow.

• Common oil grades include SAE 5W-30, SAE 10W-40, and SAE 15W-50.

• The first number in the oil grade refers to its viscosity at low temperatures, while the second number refers t...read more

Felix Wankel, a German engineer, originated the Wankel engine.

• The Wankel engine was invented by Felix Wankel in the 1950s.

• Felix Wankel was a German mechanical engineer.

• The Wankel engine is a type of internal combustion engine that uses a rotary design.

• It is known for its compact size, high power-to-weight ratio, and smooth operation.

• Mazda is one of the most well-known manufacturers to have used the Wankel engine in their vehicles.

The Wankel engine was originated in Germany.

• The Wankel engine was invented by Felix Wankel in the 1950s.

• It was first developed and produced by the German company NSU Motorenwerke AG.

• The engine design features a rotary combustion chamber instead of the traditional reciprocating pistons.

• It offers advantages such as compact size, high power-to-weight ratio, and smooth operation.

• Mazda is one of the most well-known manufacturers to adopt and refine the Wankel engine technology.

Tyres are an essential component of vehicles that provide traction, support the vehicle's weight, and absorb shocks.

• Tyres are made of rubber compounds, steel belts, and fabric cords.

• The manufacturing process involves mixing raw materials, shaping the tyre, and curing it in a mold.

• Tread patterns are designed to provide grip and channel water away from the tyre.

• Different types of tyres include summer, winter, all-season, and performance tyres.

• Tyres undergo quality control tests...read more

4 stroke engine is classified as an internal combustion engine.

• It has four strokes: intake, compression, combustion, and exhaust.

• It is commonly used in automobiles, motorcycles, and small aircraft.

• It is more fuel-efficient and produces less pollution than a 2-stroke engine.

Force is a physical quantity that can change the motion of an object.

• Force is measured in Newtons (N)

• It can be a push or a pull

• Force can change the shape or size of an object

• Examples of force include gravity, friction, and tension