HSBC Group Interview Questions and Answers

The total voltage across the batteries in a 120kVA UPS depends on the number and type of batteries used.

• The voltage of each battery depends on its type and capacity

• The number of batteries used in the UPS affects the total voltage

• For example, if the UPS uses 12V batteries, 10 batteries would be needed to achieve a total voltage of 120V

PLC stands for Programmable Logic Controller. It is a digital computer used in industrial automation to control machinery and processes.

• PLC is used to automate and control various industrial processes.

• It uses a combination of hardware and software to monitor inputs, make decisions, and control outputs.

• PLCs are commonly used in manufacturing, power plants, and transportation systems.

• They can be programmed to perform complex tasks and handle multiple inputs and outputs simultan...read more

Star-Delta power circuit diagram is used to reduce the starting current of induction motors.

• The circuit consists of three-phase power supply connected to a star-connected primary winding of a transformer.

• The secondary winding of the transformer is connected in delta to the motor.

• During starting, the motor is connected in star configuration, which reduces the starting current.

• After a few seconds, the motor is switched to delta configuration for normal operation.

• This circuit is...read more

The voltage and resistance for an ideal Earth pit

• The voltage of an ideal Earth pit should be zero, as it is connected to the Earth

• The resistance of an ideal Earth pit should be very low, ideally close to zero

• The purpose of an Earth pit is to provide a low-resistance path for electrical faults to the ground

• A low-resistance Earth pit helps in protecting electrical equipment and preventing electrical shocks

UPS uses a complex network of facilities, vehicles, and technology to efficiently deliver packages worldwide.

• UPS operates over 5000 facilities worldwide

• Packages are sorted and routed through automated systems

• Delivery routes are optimized using advanced algorithms

• UPS uses telematics to track and manage its fleet of vehicles

• Technology like drones and electric bikes are being tested for last-mile delivery

Preventive maintenance for an AHU includes regular cleaning, filter replacement, and inspection of belts and motors.

• Regularly clean the AHU to prevent buildup of dirt and debris

• Replace air filters on a regular basis to ensure proper airflow

• Inspect belts and motors for wear and tear, and replace as needed

• Check and calibrate sensors and controls to ensure proper operation

• Schedule routine maintenance with a qualified technician

• Keep a log of maintenance activities for future refe...read more