10+ Interview Questions and Answers

Different types of pipes are used for hot and cold water supply.

• Copper pipes are commonly used for both hot and cold water supply.

• PEX (cross-linked polyethylene) pipes are also used for hot and cold water supply.

• CPVC (chlorinated polyvinyl chloride) pipes are suitable for hot and cold water supply.

• Galvanized steel pipes were used in the past but are less common now due to corrosion issues.

• PVC (polyvinyl chloride) pipes are used for cold water supply only.

To find a fault in an AC, you can follow these steps:

• Check if the AC is receiving power and if the circuit breaker is tripped

• Inspect the thermostat settings and ensure they are properly set

• Examine the air filter and clean or replace it if necessary

• Inspect the condenser unit for any visible damage or debris

• Check the refrigerant levels and ensure they are within the recommended range

• Inspect the electrical connections and wiring for any loose or damaged components

• Test the capaci...read more

If a fault comes in a fixed pipe in the wall, I would follow a systematic approach to address the issue.

• Assess the extent of the fault and identify the cause

• Turn off the water supply to prevent further damage

• Determine if the fault can be repaired or if the pipe needs to be replaced

• If repairable, use appropriate tools and materials to fix the fault

• Test the repaired pipe for leaks and ensure proper functionality

• If replacement is necessary, carefully remove the damaged pipe and ...read more

There are several types of compressors used in HVAC systems worldwide.

• Reciprocating compressors

• Rotary compressors

• Scroll compressors

• Centrifugal compressors

• Screw compressors

• Axial compressors

• Diaphragm compressors

• Vane compressors

Wall putty is a white cement-based powder used for smoothening and leveling the surface of walls before painting.

• Wall putty is a type of filler material used to fill cracks, holes, and imperfections on walls.

• It is applied on the surface of walls to create a smooth and even base for painting.

• Wall putty helps in improving the durability and finish of paint.

• It is commonly used in both interior and exterior walls of buildings.

• Wall putty can be used on various surfaces such as con...read more

CSR stands for Customer Service Representative. AC refers to Air Conditioning.

• CSR is a role in customer service where representatives assist customers with their inquiries, complaints, and requests.

• AC refers to the system that provides cooling and ventilation in buildings or vehicles.

• To find out about AC, one can refer to the user manual, consult an expert technician, or search online for troubleshooting guides.

• CSR and AC are unrelated terms, but both are commonly used in dif...read more

The duration of vacuum pressure in an AC system varies depending on the specific circumstances.

• The duration of vacuum pressure in an AC system is typically determined by the evacuation process.

• During installation or repair, the vacuum pump is used to remove air and moisture from the system.

• The duration can range from a few minutes to several hours, depending on the size and complexity of the AC system.

• Once the desired vacuum level is achieved, the vacuum pressure is maintaine...read more

The commonly used elbow for draining water is the P-trap elbow.

• The P-trap elbow is commonly used for draining water in plumbing systems.

• It is named after its shape, which resembles the letter 'P'.

• The P-trap elbow is designed to prevent sewer gases from entering the building.

• It is typically used in sinks, showers, and other plumbing fixtures.

• Other types of elbows, such as 90-degree elbows, may also be used depending on the specific plumbing configuration.

The 'Y' shape plumbing fixture is used to connect three pipes together at a 45-degree angle.

• It is commonly used in plumbing systems to divert or combine the flow of water or other fluids.

• The 'Y' shape allows for smooth flow and minimal pressure drop.

• Examples include connecting a sink drain pipe to a main sewer line or connecting multiple pipes in a drainage system.

Some common equipment used in painting work include paintbrushes, rollers, sprayers, drop cloths, and paint trays.

• Paintbrushes are used to apply paint to surfaces.

• Rollers are used to quickly cover large areas with paint.

• Sprayers are used for applying paint evenly and smoothly.

• Drop cloths are used to protect floors and furniture from paint splatters.

• Paint trays are used to hold and distribute paint during the painting process.

Flow trips are used in building to control the flow of fluids or gases.

• Flow trips are commonly used in plumbing systems to prevent backflow of water.

• They are also used in HVAC systems to regulate the flow of air.

• Flow trips can be found in industrial processes to control the movement of liquids or gases.

• In fire protection systems, flow trips are used to detect the presence of water and activate alarms or sprinklers.

• Flow trips are essential in water treatment plants to ensure p...read more

There are five types of compressors: reciprocating, centrifugal, rotary, screw, and scroll.

• Reciprocating compressors use pistons to compress air.

• Centrifugal compressors use a rotating impeller to create centrifugal force.

• Rotary compressors use rotating screws or vanes to compress air.

• Screw compressors use two interlocking screws to compress air.

• Scroll compressors use two spiral-shaped scrolls to compress air.

There are five types of compressors: Reciprocating, Centrifugal, Rotary, Screw, and Scroll.

• Reciprocating compressors use pistons to compress air.

• Centrifugal compressors use a rotating impeller to create centrifugal force.

• Rotary compressors use rotating screws or vanes to compress air.

• Screw compressors use two interlocking screws to compress air.

• Scroll compressors use two spiral-shaped scrolls to compress air.

HVAC stands for Heating, Ventilation, and Air Conditioning. It refers to the technology and systems used to control indoor environmental conditions.

• HVAC is an acronym for Heating, Ventilation, and Air Conditioning.

• It encompasses the technology and systems used to control indoor temperature, humidity, and air quality.

• Heating systems provide warmth, ventilation systems circulate and exchange air, and air conditioning systems cool and dehumidify the air.

• HVAC technicians install,...read more

Electrical engineers are responsible for designing, developing, testing, and supervising the manufacturing of electrical equipment.

• Designing electrical systems and equipment

• Developing new technologies and products

• Testing equipment for safety and efficiency

• Supervising the manufacturing process

• Troubleshooting and repairing electrical equipment

Passion for protecting data and preventing cyber threats drives my interest in cyber security.

• Passion for technology and problem-solving

• Interest in preventing cyber attacks and protecting sensitive information

• Desire to contribute to a safer digital environment

• Fascination with the constantly evolving nature of cyber threats

Cyber attacks can be classified into various types based on their methods and targets.

• Malware attacks (e.g. viruses, worms, ransomware)

• Phishing attacks (e.g. email scams, fake websites)

• Denial of Service (DoS) attacks (e.g. overwhelming a system with traffic)

• Man-in-the-middle attacks (e.g. intercepting communication between two parties)

• SQL injection attacks (e.g. exploiting vulnerabilities in databases)

There are various types of tools used for different purposes in different fields.

• Hand tools: Examples include hammers, screwdrivers, wrenches

• Power tools: Examples include drills, saws, sanders

• Gardening tools: Examples include shovels, rakes, pruners

• Kitchen tools: Examples include knives, spatulas, measuring cups