NTT Interview Questions, Process, and Tips

HVAC system regulates temperature, humidity and air quality in a building.

• HVAC stands for Heating, Ventilation and Air Conditioning.

• It uses a network of ducts and vents to circulate air throughout the building.

• The system can be centralized or decentralized.

• It can be controlled by a thermostat or a building automation system.

• Examples of HVAC equipment include air handlers, chillers, boilers, and heat pumps.

UPS, DG, and Transformer are electrical devices used for power backup and voltage regulation.

• UPS (Uninterruptible Power Supply) provides backup power during power outages and voltage fluctuations.

• DG (Diesel Generator) is used as a backup power source when the main power supply fails.

• Transformer is used to step up or step down the voltage of an alternating current (AC) power supply.

• UPS and DG are commonly used in data c...read more

Forecasting techniques involve using historical data and statistical models to predict future demand.

• Time series analysis

• Regression analysis

• Exponential smoothing

• Moving averages

• Seasonal decomposition

• Judgmental forecasting

• Collaborative forecasting