Sawhney Exports Interview Questions and Answers

Transformers are electrical devices that transfer electrical energy between two or more circuits through electromagnetic induction.

• There are several types of transformers, including power transformers, distribution transformers, autotransformers, and instrument transformers.

• Power transformers are used to step up or step down voltage levels in power transmission and distribution systems.

• Distribution transformers are used to supply power to residential and commercial areas.

• Auto...read more

Relays are electrical switches that control the flow of current in a circuit.

• Electromechanical relays use an electromagnet to open or close the circuit.

• Solid-state relays use semiconductor devices to perform switching.

• Time-delay relays introduce a delay before opening or closing the circuit.

• Thermal relays protect against overheating by monitoring temperature.

• Protective relays detect faults and initiate protective actions in power systems.

A single line diagram of a substation shows the electrical connections and components in a simplified way.

• The diagram shows the main components of the substation, such as transformers, circuit breakers, and switches.

• It also shows the connections between these components, including the incoming and outgoing power lines.

• The diagram is typically drawn with a single line to represent all three phases of the electrical system.

• Symbols are used to represent the different components ...read more

IP stands for Internet Protocol and is a set of rules governing the format of data sent over the internet. A server is a computer program or device that provides functionality to other programs or devices.

• IP is used to identify and communicate with devices on a network

• Servers can provide various services such as hosting websites, storing data, and managing network traffic

• Examples of servers include web servers, email servers, and file servers

Change can be driven by various factors such as market trends, technological advancements, customer needs, and internal organizational goals.

• Market trends: Changes in consumer preferences, economic conditions, or industry regulations can drive the need for change.

• Technological advancements: New technologies can disrupt existing processes and products, leading to the need for change.

• Customer needs: Feedback from customers or changes in their requirements can necessitate change...read more