Hindustan Petroleum Apprentice Interview Questions and Answers

My ambition is to become a successful entrepreneur and make a positive impact on society through innovative business ventures.

• To start my own company and create products/services that solve real-world problems

• To build a strong network of professionals and mentors in the business world

• To continuously learn and adapt to the changing market trends

• To give back to the community through philanthropic initiatives

LPG is safer for cooking gas compared to CNG.

• LPG has a higher ignition temperature than CNG, making it safer.

• LPG is stored in liquid form, which reduces the risk of leaks compared to CNG stored in gas form.

• CNG is lighter than air and can easily disperse, increasing the risk of fire or explosion.

• LPG is widely used for cooking in households and has a proven safety record.

• CNG is more commonly used as a fuel for vehicles r

Porosity is the measure of empty spaces in a material, often used in geology and engineering.

• Porosity is the ratio of void spaces to total volume in a material.

• It is expressed as a percentage.

• Porosity is important in fields like geology for assessing rock formations and in engineering for determining the strength of materials.

• Examples of porous materials include sponges, pumice stones, and aerogels.

Permeability is the property of a material that allows fluids or gases to pass through it.

• Permeability is a measure of how easily a substance can pass through a material.

• It is often used in geology to describe how easily fluids can flow through rocks or soil.

• Permeability can be affected by factors such as pore size, connectivity, and fluid viscosity.

• Materials like sandstone have high permeability, while materials like

I am passionate about helping others and believe this job will allow me to make a positive impact in the community.

• I have a strong desire to contribute to the well-being of others

• I am excited about the opportunity to work in a team-oriented environment

• I am eager to learn and grow in my career

Oil shale is a rock containing kerogen that can be converted into shale oil through a process called retorting.

• Oil shale is a sedimentary rock containing kerogen, a precursor to oil.

• Shale oil is the liquid hydrocarbons extracted from oil shale through a process called retorting.

• Oil shale deposits are found in various countries like the United States, Estonia, and China.

• Shale oil production has increased in recent years

Synchronization, similar voltage ratios, and proper phase sequence are required for parallel operation of two transformers.

• Synchronization of the two transformers is crucial to ensure they operate together smoothly.

• The transformers should have similar voltage ratios to prevent imbalance in the system.

• Proper phase sequence must be maintained to avoid damaging the transformers or causing power quality issues.

Induction motors are self-starting due to the rotating magnetic field produced by the stator windings.

• Induction motors have a unique design where the stator windings create a rotating magnetic field.

• This rotating magnetic field induces currents in the rotor windings, causing it to rotate and start the motor.

• No external starting mechanism is required for induction motors to begin operating.

• The principle of induction all...read more