Automobile Products Of India Mechanical Maintenance Engineer Interview Questions and Answers

Break efficiency is the ratio of actual braking power to the theoretical braking power.

• It is a measure of how effectively a brake system can stop a vehicle.

• It is expressed as a percentage.

• Factors affecting break efficiency include brake pad material, rotor size, and temperature.

• A higher break efficiency means the brake system is more effective at stopping the vehicle.

• Break efficiency can be calculated using the fo...read more

Ductility is the ability of a material to deform under tensile stress without breaking.

• Ductility is a property of metals and alloys.

• It is measured by the percentage of elongation or reduction in cross-sectional area before fracture.

• Ductile materials can be drawn into wires or hammered into thin sheets.

• Examples of ductile materials include gold, silver, copper, and aluminum.

• Ductility is important in engineering app...read more

A centrifugal pump is a mechanical device that uses centrifugal force to transport fluids.

• It consists of an impeller that rotates to create a flow of fluid.

• The fluid enters the pump through the center of the impeller and is thrown outward by centrifugal force.

• The fluid then exits the pump through a discharge nozzle.

• Centrifugal pumps are commonly used in industries such as oil and gas, chemical, and water treatment...read more

An engine is a machine that converts energy into mechanical force or motion.

• Engines are used in various applications such as automobiles, aircraft, and power plants.

• They typically operate by burning fuel to generate heat, which is then converted into mechanical energy.

• Engines can be classified into different types, including internal combustion engines, steam engines, and electric motors.

• Examples of engines includ...read more

2 stroke engines have a power stroke in each revolution, while 4 stroke engines have a power stroke in every other revolution.

• 2 stroke engines have a simpler design and are lighter than 4 stroke engines.

• 2 stroke engines have a higher power-to-weight ratio compared to 4 stroke engines.

• 4 stroke engines are more fuel-efficient and produce less pollution than 2 stroke engines.

• Examples of 2 stroke engines include chain...read more

CNC stands for Computer Numerical Control.

• CNC is a manufacturing process that uses computers to control machine tools.

• It involves the use of software to control the movement of machinery and tools.

• CNC machines are used in a variety of industries, including automotive, aerospace, and electronics.

• Examples of CNC machines include lathes, mills, routers, and plasma cutters.

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.

• Force is a vector quantity, meaning it has both magnitude and direction.

Strain is the deformation or change in shape of a material due to an applied force.

• Strain is a measure of how much a material deforms under stress.

• It is calculated as the change in length or shape of a material divided by its original length or shape.

• Strain can be either compressive or tensile, depending on the direction of the applied force.

• Examples of strain include stretching a rubber band, bending a metal rod,...read more