10+ Bharat Petroleum Diploma Mechanical Engineer Interview Questions and Answers

Various types of brakes include disc brakes, drum brakes, regenerative brakes, electromagnetic brakes, and hydraulic brakes.

• Disc brakes use calipers to squeeze brake pads against a rotor to slow or stop the vehicle.

• Drum brakes use shoes that press against the inside of a drum to slow or stop the vehicle.

• Regenerative brakes convert kinetic energy into electrical energy to recharge the battery.

• Electromagnetic brakes use an electromagnetic field to create friction and slow or st...read more

Different types of fit include clearance fit, interference fit, and transition fit.

• Clearance fit: parts are designed to have a gap between them, allowing for easy assembly and disassembly.

• Interference fit: parts are designed to be pressed or forced together, creating a tight and secure fit.

• Transition fit: parts have a small amount of overlap, creating a balance between clearance and interference fit.

• Examples include piston and cylinder in an engine, bearings in a machine, and...read more

Benson Boiler is the boiler that does not need a steam drum.

• Benson Boiler is a high-pressure, drumless, water tube steam boiler

• It works on the principle of critical pressure

• It is used in thermal power plants for generating power

• It has a high thermal efficiency and can handle a wide range of fuel types

Sliding contact can be classified based on the type of motion and the nature of the surfaces in contact.

• Sliding contact can be classified as sliding, rolling, or twisting contact.

• Based on the nature of the surfaces in contact, sliding contact can be classified as dry or lubricated contact.

• Examples of sliding contact include the contact between brake pads and rotors, gears in a gearbox, and the contact between a piston and cylinder wall in an engine.

• Dry sliding contact can res...read more

Pneumatics is used for its simplicity, reliability, and cost-effectiveness in various applications.

• Pneumatic systems are easy to install and maintain.

• They are reliable and have a long lifespan.

• Pneumatics are cost-effective compared to other systems.

• They are used in various applications such as manufacturing, transportation, and construction.

• Examples include pneumatic drills, air compressors, and pneumatic cylinders.

Pump working principles involve the conversion of mechanical energy into fluid energy to transport fluids.

• Pumps use mechanical energy to create pressure and move fluids.

• They work based on the principle of fluid dynamics.

• Pumps have an inlet and an outlet where fluids enter and exit.

• The pump imparts energy to the fluid, increasing its pressure and kinetic energy.

• Different types of pumps include centrifugal pumps, reciprocating pumps, and rotary pumps.

• Example: A centrifugal pump...read more

A valve is a device that controls the flow of fluid or gas by opening, closing, or partially obstructing various passageways.

• Valves are used in various industries such as oil and gas, water treatment, power generation, and manufacturing.

• There are different types of valves including gate valves, globe valves, ball valves, butterfly valves, and check valves.

• Gate valves are used to fully open or close the flow of fluid, while globe valves control the flow by adjusting the positi...read more

A nozzle is a device used to control the flow and direction of a fluid or gas.

• Nozzles are commonly used in various industries such as aerospace, automotive, and manufacturing.

• They are used to accelerate or decelerate fluid flow, create a desired spray pattern, or generate thrust.

• Examples of nozzle applications include rocket engines, fuel injectors, spray painting equipment, and fire hoses.

HSD density refers to the density of High-Speed Diesel fuel.

• HSD density is the measure of mass per unit volume of High-Speed Diesel fuel.

• It is typically expressed in kilograms per liter (kg/L) or grams per milliliter (g/mL).

• The density of HSD can vary depending on factors such as temperature and composition.

• Knowing the density of HSD is important for various engineering calculations and fuel efficiency analysis.

• For example, a higher density of HSD can indicate a higher energy...read more

EBMS density refers to the density of the Engineered Biomaterial System used in mechanical engineering.

• EBMS density is a measure of the mass per unit volume of the Engineered Biomaterial System.

• It is an important parameter in designing and analyzing mechanical components made from EBMS.

• EBMS density can vary depending on the composition and structure of the biomaterial.

• Higher density materials are generally stronger and more rigid.

• Examples of EBMS density include the density o...read more