10+ CENTRE FOR SCIENCE OF STUDENT LEARNING Interview Questions and Answers

FRLS cables are not used in place of FLP cables due to differences in their fire safety properties and applications.

• FRLS cables are Flame Retardant Low Smoke cables designed to reduce the spread of fire and emit less smoke when burned.

• FLP cables are Flameproof cables designed to contain any explosion within the cable, making them suitable for hazardous environments.

• The choice between FRLS and FLP cables depends on the specific requirements of the application in terms of fire ...read more

FLP cables are used in hazardous environments where there is a risk of explosion due to flammable gases or vapors.

• Used in oil refineries

• Chemical plants

• Pharmaceutical manufacturing facilities

• Gas processing plants

Lightning protection is provided in cable tray to prevent damage to electrical equipment and ensure safety.

• Lightning protection in cable tray helps divert lightning strikes away from the cables and equipment.

• It reduces the risk of electrical surges and voltage spikes caused by lightning.

• By providing a path of least resistance, it helps dissipate the electrical energy from lightning strikes.

• It protects the cables, preventing them from melting or catching fire due to high curre...read more

HRC fuses are high rupturing capacity fuses used for high fault current protection, while MCBs are miniature circuit breakers used for overload and short circuit protection.

• HRC fuses are designed to handle high fault currents and provide protection against short circuits.

• MCBs are used for overload and short circuit protection in low voltage electrical circuits.

• HRC fuses have a higher breaking capacity compared to MCBs.

• MCBs are more commonly used in residential and commercial ...read more

Lightning protection functions to safeguard structures and electrical systems from the damaging effects of lightning strikes.

• Redirects lightning strikes away from structures

• Prevents electrical surges and fires

• Protects sensitive equipment and electronics

• Ensures safety for occupants and workers

• Reduces the risk of structural damage and collapse

Safety training is given before work to ensure the well-being of employees and prevent accidents.

• Safety training helps employees understand potential hazards and how to mitigate them.

• It promotes a culture of safety and helps create a safe working environment.

• Training ensures employees are aware of safety protocols and procedures.

• It reduces the risk of accidents, injuries, and property damage.

• Safety training also helps employees respond effectively in emergency situations.

• Exam...read more

The function of a battery in a dug is to provide electrical power for various equipment and systems.

• The battery supplies electrical energy to power the dug's electrical systems.

• It serves as a backup power source in case of a power outage.

• The battery can be used to start the dug's engine.

• It powers essential equipment such as lights, communication devices, and control systems.

• The battery may also be used to store energy from renewable sources, such as solar panels, for later us...read more

FLP cable stands for Flameproof cable, which is designed to prevent the propagation of fire along the cable.

• FLP cables are commonly used in hazardous environments where there is a risk of fire or explosion.

• They are constructed with special materials and insulation to prevent the spread of flames.

• FLP cables are often used in industries such as oil and gas, chemical plants, and mining.

• Examples of FLP cables include those with a flame-retardant jacket or those with a special fir...read more

Static pressure on an AHU supplying air with HEPA filter is the pressure exerted by the air on the walls of the ductwork and filter.

• Static pressure is the force exerted by the air against the walls of the ductwork and filter.

• It is measured in inches of water column (in. w.c.) or pascals (Pa).

• Higher static pressure indicates more resistance in the system, which can affect airflow and efficiency.

• HEPA filters typically have a higher pressure drop compared to standard filters, le...read more