10+ International Export House Interview Questions and Answers

Equal relative volatility means no separation is possible in distillation.

• Relative volatility is the ratio of vapor pressures of two components in a mixture.

• When it is equal to 1, the vapor pressures of both components are equal.

• This means they will boil and condense at the same temperature, making separation impossible.

• Distillation relies on the difference in boiling points of components to separate them.

• Therefore, distillation is not possible when relative volatility is equ...read more

To increase NPSHr when NPSHa is more, reduce the impeller diameter or increase the speed of the pump.

• Reduce impeller diameter

• Increase pump speed

Relative volatility is a measure of the difference in vapor pressures of two components in a mixture.

• It is used in distillation processes to determine the separation efficiency of a mixture.

• Higher relative volatility indicates easier separation of components.

• It is calculated as the ratio of vapor pressures of the two components.

• For example, in the separation of ethanol and water, ethanol has a higher relative volatility than water.

Distillation is a process of separating components of a mixture based on their boiling points.

• It involves heating the mixture to vaporize the component with the lowest boiling point.

• The vapor is then condensed and collected as a separate liquid.

• This process is commonly used in the production of alcoholic beverages, fuels, and essential oils.

• Fractional distillation is a variation of distillation that is used to separate components with closer boiling points.

• Distillation is als...read more

Types of NPSH and their differences

• Net Positive Suction Head (NPSH) is the difference between the absolute pressure at the pump suction and the vapor pressure of the liquid being pumped.

• Types of NPSH are available NPSH (NPSHa) and required NPSH (NPSHr).

• NPSHa is the amount of NPSH available at the pump suction, while NPSHr is the amount of NPSH required by the pump.

• The difference between NPSHa and NPSHr determines whether the pump will operate properly or experience cavitation...read more

Access control is the practice of restricting access to certain resources or areas to authorized individuals only.

• Access control involves using mechanisms such as passwords, biometrics, access cards, and security policies to regulate who can access specific resources.

• It is important in preventing unauthorized access to sensitive information, protecting physical assets, and ensuring the safety of individuals.

• Access control systems can be implemented in various environments suc...read more

Extractive distillation is a process used to separate two or more components from a mixture using a solvent.

• It involves adding a solvent to the mixture to form two liquid phases.

• The solvent selectively removes one component from the mixture, leaving the other behind.

• The solvent and the removed component are then separated from each other by distillation.

• Examples include separating ethanol from water using benzene as a solvent and separating isomers of butanol using glycol as ...read more

Plant startup to steady state involves several parameters.

• Initial planning and design

• Procurement of equipment and materials

• Construction and installation

• Commissioning and testing

• Training of personnel

• Optimization of processes

• Maintenance and troubleshooting

• Continuous improvement

• Examples: oil refinery, power plant, chemical plant

Assessing security vulnerability involves identifying potential weaknesses in systems or processes that could be exploited by threats.

• Conduct regular security assessments to identify vulnerabilities

• Use penetration testing to simulate attacks and uncover weaknesses

• Implement security controls and measures to mitigate risks

• Stay informed about latest security threats and trends

• Train employees on security best practices

There are several types of compressors including reciprocating, rotary, centrifugal, and axial compressors.

• Reciprocating compressors use a piston to compress the gas.

• Rotary compressors use rotating impellers or screws to compress the gas.

• Centrifugal compressors use a rotating impeller to accelerate the gas and then convert the kinetic energy into pressure.

• Axial compressors use a series of rotating and stationary blades to compress the gas.

• Examples of compressors include air c...read more

Entropy is a measure of disorder or randomness in a system.

• Entropy is a concept in thermodynamics and information theory.

• In thermodynamics, entropy is a measure of the unavailability of a system's energy to do work.

• Entropy increases in isolated systems over time, leading to a state of maximum disorder or equilibrium.

• In information theory, entropy is a measure of the uncertainty or randomness in a set of data.

• For example, a shuffled deck of cards has higher entropy than a sort...read more

Risk assessment involves identifying, analyzing, and evaluating potential risks to determine their impact and likelihood.

• Identify potential risks by considering internal and external factors

• Analyze the likelihood and impact of each risk

• Evaluate the overall risk level and prioritize them based on severity

• Implement risk mitigation strategies to reduce or eliminate the identified risks

The crankshaft is a mechanical component in an engine that converts the reciprocating motion of the pistons into rotational motion.

• The crankshaft is located in the engine block and is connected to the pistons via connecting rods.

• As the pistons move up and down, the connecting rods transfer this motion to the crankshaft.

• The crankshaft then converts this linear motion into rotational motion, which is used to drive other engine components such as the camshaft and the flywheel.

• Th...read more

Types of welding include MIG, TIG, stick, flux-cored, and oxy-acetylene welding.

• MIG welding (Metal Inert Gas) - uses a wire electrode and shielding gas

• TIG welding (Tungsten Inert Gas) - uses a tungsten electrode and inert gas

• Stick welding (Shielded Metal Arc Welding) - uses a flux-coated electrode

• Flux-cored welding - uses a tubular wire electrode with flux inside

• Oxy-acetylene welding - uses a mixture of oxygen and acetylene gas

Compressors are mechanical devices that increase the pressure of a gas by reducing its volume.

• Compressors are commonly used in refrigeration and air conditioning systems to compress refrigerant gases.

• They are also used in industrial processes to compress air for pneumatic tools and equipment.

• There are different types of compressors such as reciprocating, rotary, and centrifugal compressors.

• Compressors play a crucial role in various industries including manufacturing, oil and ...read more

P&I'd stands for Profit and Loss Statement and Income Statement. It is a financial statement that shows a company's revenues and expenses over a specific period of time.

• P&I'd is a financial statement used to track a company's revenues and expenses.

• It shows the company's profitability over a specific period of time.

• The statement is also known as an Income Statement or Profit and Loss Statement.

• It is an important tool for businesses to evaluate their financial performance and m...read more

FLP stands for flameproof and is designed to prevent explosions in hazardous areas.

• FLP equipment is designed to contain any explosion within the equipment itself, preventing it from spreading to the surrounding area.

• Non-FLP equipment does not have this level of protection and can potentially ignite flammable gases or vapors in the surrounding area.

• FLP equipment is typically used in hazardous areas such as oil refineries, chemical plants, and mines.

• Examples of FLP equipment in...read more

A blower is a mechanical device used to create a flow of air or gas.

• Blowers work by drawing in air or gas through an inlet and then expelling it through an outlet at a higher pressure or velocity.

• They are commonly used in HVAC systems, industrial processes, and combustion engines.

• Blowers can be powered by electric motors, internal combustion engines, or other sources of mechanical energy.