Nirvaa Solutions Interview Questions and Answers

Current is the flow of electric charge. Transformer rating in kVA is important as it determines the maximum power that can be transferred.

• Current is measured in amperes (A)

• Transformers are used to change the voltage level of an alternating current (AC) power supply

• Transformer rating in kVA is determined by the maximum power that can be transferred without exceeding the temperature limits of the transformer

• Higher kVA ra...read more

DG stands for Diesel Generator and UPS stands for Uninterruptible Power Supply. Both are backup power sources used in case of power outages.

• DG is a standalone power generator that runs on diesel fuel and is used to provide backup power in case of power outages.

• UPS is an electrical device that provides emergency power to a load when the input power source fails.

• DG is commonly used in industries, hospitals, and large bui...read more

Equipment and tools used by electricians

• Multimeter

• Wire strippers

• Pliers

• Screwdrivers

• Voltage tester

• Circuit tracer

• Fish tape

• Conduit bender

• Drill

• Sawzall

• Hammer

• Tape measure

Capital market is a financial market where individuals and institutions trade financial securities.

• Capital market facilitates the buying and selling of long-term debt and equity instruments.

• It includes stock exchanges, bond markets, and other platforms for trading securities.

• Investors can raise capital by issuing stocks or bonds in the capital market.

• Examples of capital market participants include stockbrokers, investm

IPO stands for Initial Public Offering, which is the first time a company offers its shares to the public.

• IPO is a way for a company to raise capital by selling shares of its stock to the public for the first time.

• It allows the company to expand and grow by accessing a larger pool of investors.

• Investors who buy shares in an IPO can potentially profit if the company's stock price increases after going public.

• Popular exa...read more

Types of capital markets include primary market, secondary market, and money market.

• Primary market: Where new securities are issued for the first time, such as through an initial public offering (IPO).

• Secondary market: Where existing securities are bought and sold among investors, such as on stock exchanges.

• Money market: Where short-term debt securities are traded, such as Treasury bills and commercial paper.

Yes, the earth fault setting of an ACB breaker does depend on its time delay.

• The earth fault setting of an ACB breaker is typically set based on the time delay required for the breaker to trip in case of an earth fault.

• The time delay setting ensures that the breaker allows for temporary faults to clear without tripping unnecessarily.

• For example, a common setting for earth fault protection in ACB breakers is a time dela...read more

Power factor is maintained by using power factor correction devices like capacitors. Benefits include reduced electricity costs and improved efficiency.

• Power factor can be maintained by using power factor correction devices such as capacitors to offset the inductive load of motors and other equipment.

• Maintaining a high power factor (close to 1) reduces the amount of reactive power flowing through the system, leading to...read more

Equipment used in computer room air handling units include chillers, humidifiers, filters, fans, and controls.

• Chillers: Used to cool the air in the computer room.

• Humidifiers: Used to control the humidity levels in the room.

• Filters: Used to remove dust and other particles from the air.

• Fans: Used to circulate the air throughout the room.

• Controls: Used to regulate the temperature and other settings of the unit.

Common troubles in chillers include refrigerant leaks, compressor issues, and control system malfunctions.

• Refrigerant leaks can lead to decreased cooling capacity and efficiency.

• Compressor issues such as overheating or failure can result in a complete shutdown of the chiller.

• Control system malfunctions may cause inaccurate temperature readings or improper operation of the chiller.

• Other potential troubles include dirty ...read more

A vacuum is a space devoid of matter, and it is important in chiller systems for removing air and moisture.

• A vacuum is created in chiller systems to remove air and moisture, which can cause inefficiencies and damage.

• Maintaining a proper vacuum level is crucial for the efficient operation of a chiller.

• Vacuum pumps are commonly used in chiller systems to create and maintain the necessary vacuum.

• Air and moisture in the sy...read more