10+ Interview Questions and Answers

Purpose relay is used to protect the equipment from damage due to abnormal conditions in the power system.

• Purpose relay is a protective relay that operates when the power system experiences abnormal conditions.

• It is used to protect equipment such as transformers, generators, and transmission lines from damage.

• Purpose relay can detect faults such as overvoltage, undervoltage, overcurrent, and underfrequency.

• When a fault is detected, the purpose relay sends a signal to the circ...read more

Different types of protections used in 110 kV feeders

• Overcurrent protection

• Distance protection

• Differential protection

• Directional overcurrent protection

• Earth fault protection

• Under/overvoltage protection

Transformers are used in electrical systems to change the voltage level of electricity.

• Transformers are used to step up or step down the voltage in an electrical system.

• They are essential for transmitting electricity over long distances.

• Transformers help in reducing energy losses during transmission.

• They are used in power distribution systems to match the voltage levels of different devices.

• Transformers are also used in electronic devices to convert AC voltage to DC voltage.

Prepaid meter is a good thing for both consumers and utility companies.

• Prevents unexpected high bills for consumers

• Encourages energy conservation

• Reduces the risk of non-payment for utility companies

• Allows for better budgeting for both parties

• Eliminates the need for manual meter readings

• Examples: Smart meters, prepaid electricity cards

Motor converts electrical energy into mechanical energy while generator converts mechanical energy into electrical energy. Buck converter steps down voltage while boost converter steps up voltage.

• Motor converts electrical energy into mechanical energy while generator converts mechanical energy into electrical energy

• Motor has a rotor and a stator while generator has a stator and a rotor

• Buck converter steps down voltage while boost converter steps up voltage

• Buck converter is us...read more

The unit of resistance is ohm.

• The unit of resistance is measured in ohms (symbol: Ω).

• Resistance is the opposition to the flow of electric current in a circuit.

• One ohm is equal to one volt per ampere (1 Ω = 1 V/A).

Prepaid meters offer convenience and control but may have higher upfront costs.

• Prepaid meters allow customers to monitor and control their energy usage in real-time.

• Customers can avoid unexpected bills and budget more effectively.

• Prepaid meters may have higher upfront costs for installation and purchasing credit.

• Some customers may find it inconvenient to constantly top up their meter.

• Prepaid meters may not be suitable for vulnerable customers who struggle to manage their fina...read more

Transformer vector diagram shows the relationship between primary and secondary voltage and current.

• Transformer vector diagram is a graphical representation of the transformer's behavior.

• It shows the phase relationship between primary and secondary voltage and current.

• The diagram is used to calculate the transformer's efficiency and power factor.

• The vector diagram can be used to determine the transformer's impedance and voltage regulation.

• The diagram is also used to analyze t...read more

My mast peace is creating a positive and productive work environment where everyone feels valued and supported.

• I prioritize clear communication and active listening to ensure everyone's needs are heard and addressed.

• I encourage collaboration and teamwork to foster a sense of community and shared goals.

• I lead by example, modeling professionalism, respect, and a strong work ethic.

• I am open to feedback and constantly seeking ways to improve the work environment and processes.

• For...read more