Testing Engeneer Interview Questions and Answers for Freshers

Secondary batteries work by converting chemical energy into electrical energy.

• Secondary batteries, also known as rechargeable batteries, can be charged and discharged multiple times.

• They use chemical reactions to store and release energy.

• Common types of secondary batteries include lithium-ion, nickel-cadmium, and lead-acid batteries.

• During charging, the battery's positive electrode (cathode) accepts electrons, while the negative electrode (anode) releases electrons.

• During dis...read more

UPS (Uninterruptible Power Supply) is a device that provides backup power to electrical systems during power outages.

• UPS consists of a battery, an inverter, and a charger.

• During normal operation, the UPS charges its battery using utility power.

• When a power outage occurs, the UPS switches to battery power and converts it to AC power using the inverter.

• UPS systems are commonly used to protect critical equipment like computers, servers, and telecommunications systems.

• They provid...read more

An online UPS is a type of uninterruptible power supply that provides continuous power to connected devices by constantly converting AC power to DC power and then back to AC power.

• Online UPS is also known as double conversion UPS.

• It provides protection against power fluctuations, surges, and outages.

• The UPS continuously charges its batteries while supplying power to the connected devices.

• In case of a power outage, the UPS seamlessly switches to battery power without any inter...read more

The impact of social media on society

• Introduction to social media

• Positive effects of social media

• Negative effects of social media

• Influence on communication and relationships

• Role of social media in business and marketing