National Detergent Company Mechanical Engineer Interview Questions, Process, and Tips

A workshop should have a variety of equipment to support mechanical engineering tasks.

• Basic hand tools such as wrenches, pliers, and screwdrivers

• Power tools like drills, saws, and grinders

• Lifting equipment such as cranes and hoists

• Machining tools like lathes, milling machines, and grinders

• Welding equipment like MIG, TIG, and stick welders

• Measurement tools like calipers, micrometers, and gauges

Parts of a machine refer to the components that make up the machine and enable it to function.

• The power source, such as an engine or motor

• The transmission system, including gears and belts

• The control system, such as buttons and switches

• The frame or chassis that supports the machine

• The working components, such as pistons or blades

• The lubrication and cooling systems

• The safety features, such as guards and emergency stop b

There are several types of boilers used in various industries and applications.

• Fire-tube boilers

• Water-tube boilers

• Electric boilers

• Condensing boilers

• Package boilers

• Industrial boilers

• Residential boilers

• High-pressure boilers

• Low-pressure boilers

Diesel engines are more efficient and have higher torque, while petrol engines have higher power and are more refined.

• Diesel engines use compression ignition, while petrol engines use spark ignition.

• Diesel engines have a higher compression ratio than petrol engines.

• Diesel engines are more fuel-efficient and have better mileage than petrol engines.

• Petrol engines have a higher power-to-weight ratio than diesel engines.

• Pe...read more

Petrol engine consists of several parts that work together to convert fuel into mechanical energy.

• Cylinder block

• Pistons

• Crankshaft

• Camshaft

• Valves

• Spark plugs

• Fuel injectors

• Oil pump

• Water pump

• Timing belt/chain