Cairn Oil Summer Intern Interview Questions, Process, and Tips

Grinding efficiency is influenced by factors like feed rate, material properties, grinding wheel speed, and coolant usage.

• Feed rate: Higher feed rates can improve efficiency but may lead to increased wear on the grinding wheel.

• Material properties: Harder materials require slower grinding speeds to achieve optimal efficiency.

• Grinding wheel speed: Higher speeds can increase efficiency but may also generate more heat, aff...read more

Grinding media can significantly impact ball mill performance by affecting grinding efficiency and wear rate.

• The type of grinding media used can affect the grinding efficiency of the ball mill.

• Different materials of grinding media have varying wear rates, impacting maintenance costs.

• The size and shape of the grinding media can also influence the grinding process.

• For example, using ceramic balls instead of steel balls c...read more

Slag reactivity can impact cement performance by influencing hydration reactions and strength development.

• Slag reactivity refers to the ability of slag to react with water and form cementitious compounds.

• Higher slag reactivity can lead to faster hydration reactions and improved early strength development.

• However, excessive slag reactivity can also result in rapid setting and reduced workability of the concrete.

• Proper s...read more

A tablet is a portable computer device with a touchscreen display, typically used for browsing the internet, watching videos, playing games, and more.

• Portable computer device with a touchscreen display

• Commonly used for browsing the internet, watching videos, playing games, etc.

• Examples: Apple iPad, Samsung Galaxy Tab, Amazon Fire Tablet

I am familiar with microcontrollers such as Arduino, Raspberry Pi, and ESP8266.

• Arduino

• Raspberry Pi

• ESP8266

Types of reactors include batch, continuous stirred-tank, plug flow, and fluidized bed reactors.

• Batch reactors operate in a closed system with a fixed amount of reactants.

• Continuous stirred-tank reactors have continuous flow of reactants and products.

• Plug flow reactors have a continuous flow with no mixing along the length of the reactor.

• Fluidized bed reactors use a fluid to suspend solid particles, allowing for better

Valves are devices used to control the flow of fluids or gases in a system by opening, closing, or partially obstructing passageways.

• Types of valves include ball valves, gate valves, globe valves, butterfly valves, check valves, and pressure relief valves.

• Ball valves have a spherical closure unit that allows for quick on/off control of flow.

• Gate valves have a gate-like disc that moves up and down to control flow.

• Globe ...read more

Adding petrol in a diesel engine can cause damage to the engine and reduce its efficiency.

• Petrol has lower lubricating properties than diesel, leading to increased wear and tear on engine components.

• Petrol can cause damage to the fuel injection system and fuel pump.

• The engine may misfire or stall due to the different combustion properties of petrol and diesel.

• Running a diesel engine on petrol can result in overheating ...read more

The organization is a leading technology company specializing in software development and digital solutions.

• Founded in 2005 by John Smith

• Headquartered in Silicon Valley, California

• Provides services in web development, mobile app development, and cloud computing

• Clients include Fortune 500 companies such as Google and Amazon