10+ Interview Questions and Answers

Air mainly contains water vapor due to the evaporation of water bodies, plants, and human activities.

• Water vapor is the most abundant gas in the atmosphere due to evaporation from oceans, lakes, rivers, and plants.

• Other vapors like alcohol, gasoline, or perfume are present in the air but in much lower concentrations compared to water vapor.

• Water vapor is constantly being added to the air through processes like transpiration from plants and evaporation from human activities li...read more

The atmosphere gradually thins out as altitude increases, eventually merging into outer space.

• The atmosphere is composed of several layers, with the exosphere being the outermost layer before transitioning into space.

• The Kármán line, located at an altitude of 100 km (62 miles) above sea level, is often considered the boundary between Earth's atmosphere and outer space.

• Beyond the Kármán line, the atmosphere becomes extremely thin and eventually merges into the vacuum of space.

Gases in the atmosphere do not separate out according to mass due to the constant mixing caused by wind and turbulence.

• Constant mixing caused by wind and turbulence prevents gases from separating based on mass

• Gravity also plays a role in keeping gases well-mixed in the atmosphere

• Different gases have different molecular weights but are still evenly distributed in the atmosphere

Entropy is a measure of disorder or randomness in a system. Its unit is joules per kelvin (J/K).

• Entropy quantifies the number of possible microstates in a system

• It is a measure of the system's energy dispersal or the degree of randomness

• Entropy increases with an increase in disorder or randomness

• The unit of entropy is joules per kelvin (J/K)

• Entropy can be calculated using statistical mechanics or thermodynamics

• Example: Melting ice has higher entropy than solid ice due to incr...read more

Clouds move due to the combination of wind, temperature, and pressure differences in the atmosphere.

• Clouds are carried along by the wind in the atmosphere.

• Temperature differences cause air to rise or sink, affecting cloud movement.

• Pressure variations also play a role in cloud motion.

• For example, warm air rising from the ground can create cumulus clouds that move with the wind.

Both engines have their own advantages and disadvantages depending on the application.

• 2-stroke engines are lighter and have higher power-to-weight ratio, making them ideal for small applications like chainsaws and mopeds.

• 4-stroke engines are more fuel-efficient and have a longer lifespan, making them ideal for larger applications like cars and boats.

• Environmental concerns have led to a decline in the use of 2-stroke engines due to their higher emissions.

• The choice between the...read more

There are 5 types of fire extinguishers.

• Type A: for fires involving ordinary combustibles like wood, paper, or cloth.

• Type B: for fires involving flammable liquids like gasoline or oil.

• Type C: for fires involving electrical equipment.

• Type D: for fires involving flammable metals like magnesium or titanium.

• Type K: for fires involving cooking oils and fats commonly found in commercial kitchens.

Yes, IS-14885 is a specification code for MDPE pipes.

• IS-14885 is a standard specification for Medium Density Polyethylene (MDPE) pipes.

• It covers the requirements for MDPE pipes for water supply and gas distribution.

• The specification includes dimensions, physical properties, performance requirements, and testing methods.

• MDPE pipes complying with IS-14885 are widely used in India for various applications.

• The specification also provides guidelines for installation and maintenanc...read more

Space is empty due to the extremely low density of matter and the vast distances between objects.

• Space is mostly empty because of the low density of matter in the universe.

• The vast distances between celestial bodies also contribute to the emptiness of space.

• Even though space is not completely empty and contains various particles and radiation, it is considered a vacuum due to the low density of matter.

FM200 is a clean agent fire suppression system that uses a colorless, odorless gas to extinguish fires.

• FM200 is a popular choice for data centers, museums, and other facilities where water damage from traditional sprinkler systems would be catastrophic.

• The gas is stored in cylinders and released through a network of pipes and nozzles when a fire is detected.

• FM200 works by removing heat from the fire and interrupting the chemical chain reaction that sustains it.

• It is a fast-ac...read more

To work in IGL, one must have knowledge of inspection techniques and equipment used in the oil and gas industry.

• Understand the inspection requirements and standards set by IGL

• Use appropriate inspection techniques and equipment

• Ensure compliance with safety regulations

• Maintain accurate records of inspections and findings

• Communicate effectively with team members and clients

• Continuously improve knowledge and skills through training and development

• Examples of equipment used in IGL...read more

There are two types of fire pumps: centrifugal and positive displacement.

• Centrifugal pumps use a rotating impeller to create a flow of water, while positive displacement pumps use a piston or diaphragm to move water.

• Centrifugal pumps are more commonly used in fire suppression systems.

• Positive displacement pumps are typically used in high-rise buildings or areas with low water pressure.

• Examples of centrifugal pumps include end suction pumps and split case pumps.

• Examples of pos...read more

The specifications code of MDPE pipe varies depending on the manufacturer and intended use.

• MDPE pipes are commonly used for gas and water distribution systems

• Some common specifications codes for MDPE pipes include ISO 4437, ASTM D2513, and AS/NZS 4130

• The specifications code will provide information on the pipe's dimensions, pressure rating, and material composition

MDPE stands for Medium Density Polyethylene.

• MDPE is a type of plastic commonly used in the manufacturing of pipes and fittings.

• It has a higher density than LDPE (Low Density Polyethylene) but lower than HDPE (High Density Polyethylene).

• MDPE is known for its excellent resistance to stress cracking and good chemical resistance.

• It is often used for gas and water distribution systems, as well as in the agricultural and mining industries.

CO2 flooding system is a fire suppression system that uses carbon dioxide gas to extinguish fires.

• CO2 flooding system is commonly used in areas where water-based fire suppression systems are not suitable, such as electrical rooms, data centers, and engine rooms.

• It works by releasing a high concentration of carbon dioxide gas into the protected area, displacing oxygen and suffocating the fire.

• CO2 flooding systems are typically activated automatically by heat or smoke detectors...read more