20+ Interview Questions and Answers

Feeder charging and handing over involves the process of transferring electrical power from one source to another.

• Ensure proper safety measures are in place before starting the process

• Check the voltage and current ratings of the feeder to ensure compatibility with the receiving end

• Disconnect the feeder from the power source and connect it to the receiving end

• Verify the successful transfer of power and ensure proper functioning of the system

• Complete necessary documentation and...read more

Various types of equipment are required in LT and HT line work, including transformers, circuit breakers, insulators, conductors, and protective devices.

• Transformers

• Circuit breakers

• Insulators

• Conductors

• Protective devices

Earthing road is used in HT lines to provide a path for fault current to flow safely into the ground, preventing damage to equipment and ensuring safety.

• Earthing road is a conductive strip or wire buried in the ground near HT lines.

• It provides a low resistance path for fault current to flow into the ground, preventing damage to equipment and ensuring safety.

• Proper installation of earthing road involves burying the conductor at a sufficient depth below the surface to ensure go...read more

Material inspection of electrical projects involves checking the quality and specifications of materials used in the project.

• Verify that materials meet project specifications and standards

• Inspect materials for damage or defects

• Check for proper labeling and documentation

• Ensure materials are stored and handled correctly

• Perform tests or measurements on materials as needed

• Examples: checking the gauge and insulation of electrical wires, inspecting the quality of circuit breakers a...read more

Types of GI top channels, cross angles, types of DTR, rating of DTR, current capacity of DTRs.

• Types of GI top channels include GI plain channels and GI perforated channels.

• Cross angles are used to provide additional support and stability to structures.

• Types of DTR (Distribution Transformer Rectifier) include single-phase and three-phase.

• Rating of DTR is typically in kVA (kilo Volt-Ampere) and can range from 25 kVA to 2000 kVA.

• Current capacity of DTRs varies based on the ratin...read more

Equipment required in HT and LT lines include transformers, circuit breakers, insulators, conductors, and lightning arresters.

• Transformers are used to step up or step down voltage levels in HT and LT lines.

• Circuit breakers are essential for protecting the lines from overloads and short circuits.

• Insulators are used to support and separate conductors to prevent electrical leakage.

• Conductors are used to carry the electrical current from one point to another.

• Lightning arresters p...read more

Handing over taking over certificate is a document used in engineering projects to officially transfer responsibility from one party to another.

• It is a formal document that signifies the transfer of responsibility from one party to another in engineering projects.

• It includes details such as the scope of work, completion status, quality standards, and any outstanding issues.

• The certificate is signed by both parties to acknowledge the handover and acceptance of the project.

• It i...read more

Feeder bifurcation is the process of dividing a main electrical feeder into multiple branches to distribute power to different areas.

• Feeder bifurcation involves splitting a main feeder into smaller branches to supply power to different sections of a building or facility.

• This process helps in balancing the load and preventing overloading of the main feeder.

• Feeder bifurcation can be done using distribution panels, circuit breakers, and switches.

• Examples of feeder bifurcation in...read more

Railway crossings are intersections where roads and railway tracks meet, requiring vehicles to stop when trains are passing.

• Railway crossings are equipped with warning signs, lights, and barriers to alert drivers of approaching trains.

• Drivers must stop behind the barriers when they are down and wait for the train to pass before proceeding.

• Some railway crossings also have bells or horns to further warn drivers of an approaching train.

• It is important for drivers to always be ca...read more

A magger is a device used to measure the insulation resistance of electrical equipment or cables.

• Magger machine is also known as insulation tester.

• It is used to check the insulation resistance of electrical systems to ensure safety and prevent electrical failures.

• The machine applies a high voltage to the equipment and measures the resistance to current flow, indicating the condition of the insulation.

• Regular testing with a magger can help identify potential issues before they...read more

A single line diagram is a simplified diagram that shows the electrical connections and components of a power system using single lines.

• It is a simplified representation of a power system, showing the main components and their interconnections using single lines.

• It is used by electrical engineers to understand and analyze the power system without getting into the details of each individual component.

• It typically includes generators, transformers, circuit breakers, switches, a...read more

The incommer machine is a device used to control the incoming power supply to a system or equipment.

• An incommer machine is typically used in electrical distribution systems to manage the flow of electricity.

• It can be a switchgear device that allows for the connection or disconnection of power sources.

• Incommer machines are essential for ensuring the safety and efficiency of electrical systems.

• Examples include circuit breakers, contactors, and isolators.

A pole schedule is a document that lists the locations and details of all poles used in an electrical distribution system.

• It includes information such as pole number, location, height, material, and any attachments or equipment mounted on the pole.

• Pole schedules are important for maintenance, repair, and expansion of the electrical distribution system.

• Example: Pole 1 located at Main Street, 30 feet tall wooden pole with a transformer mounted on it.

Earthing in DTR structures is essential for safety and proper functioning of the equipment.

• Earthing helps in dissipating fault currents safely to the ground.

• It provides protection against electric shocks and equipment damage.

• Proper earthing reduces the risk of fire hazards.

• Earthing should be done using copper rods or strips buried in the ground.

• Regular maintenance and testing of earthing systems is necessary.

LT AB Cable's current capacity depends on factors like conductor size, insulation material, ambient temperature, etc.

• Current capacity of LT AB Cable is determined by factors like conductor size, insulation material, ambient temperature, installation method, etc.

• The current capacity can be calculated using standard formulas and tables provided by manufacturers or industry standards.

• For example, a 25mm² LT AB Cable may have a different current capacity compared to a 50mm² LT AB...read more

Step down transformers decrease voltage while step up transformers increase voltage.

• Step down transformers have more turns in the primary coil than the secondary coil.

• Step up transformers have more turns in the secondary coil than the primary coil.

• Step down transformers are used to reduce voltage for household appliances.

• Step up transformers are used in power transmission to increase voltage for long distance transmission.

VCB stands for Vacuum Circuit Breaker, a type of circuit breaker that uses vacuum as the arc quenching medium.

• VCB is a type of circuit breaker that uses vacuum as the arc quenching medium

• It is used to interrupt fault currents in electrical systems

• VCBs are commonly used in medium voltage applications

• They are more reliable and require less maintenance compared to other types of circuit breakers

BOQ stands for Bill of Quantities, a document used in construction projects to list the materials, parts, and labor needed for a project.

• BOQ is a detailed list of items, with quantities and prices, required for a construction project.

• It helps in estimating the total cost of the project and serves as a basis for tendering and budgeting.

• BOQ is typically prepared by quantity surveyors or estimators based on the project drawings and specifications.

• It includes detailed information...read more

HT lines are high tension lines used for transmitting electricity over long distances at high voltages, while LT lines are low tension lines used for distributing electricity at lower voltages in local areas.

• HT lines carry electricity at high voltages for long distance transmission.

• LT lines distribute electricity at lower voltages in local areas.

• HT lines are typically used for transmission towers, while LT lines are used for distribution poles.

• HT lines have higher insulation ...read more

Bank balance is shown in balance sheet under various heads such as cash and cash equivalents, loans and advances, investments, etc.

• Cash and cash equivalents

• Loans and advances

• Investments

• Other assets

• Deposits

• Borrowings

• Other liabilities

MFN clause in tax treaties allows a country to grant the same tax treatment to one treaty partner as it does to any other country

• MFN clause ensures that a country cannot provide more favorable tax treatment to another country without extending the same treatment to all treaty partners

• It promotes fairness and prevents discrimination among treaty partners

• For example, if Country A has a tax treaty with Country B and later signs a new treaty with Country C that includes more favo...read more

The installation of distribution transformers involves several steps and considerations.

• Ensure proper site preparation before installation

• Select the appropriate transformer based on load requirements

• Ensure proper grounding and electrical connections

• Follow safety protocols during installation

• Perform testing and commissioning after installation

• Consider environmental factors and protection measures

• Provide adequate ventilation and cooling for the transformer

• Consider future mainte...read more

An insulator is a material that does not conduct electricity and is used to prevent the flow of electrical current.

• Insulators have high resistance to electrical current.

• Common insulating materials include rubber, glass, and plastic.

• Insulators are used in electrical wiring to prevent short circuits.

• Insulators are also used in power lines to prevent electricity from leaking out.

• Insulators can be used to protect people from electric shocks.

Recent changes in Schedule-III pertain to the format of financial statements for companies.

• Schedule-III of the Companies Act, 2013 has been amended to align with the Indian Accounting Standards (Ind AS).

• The changes include revised formats for balance sheet, profit and loss account, and cash flow statement.

• The new formats aim to improve transparency, comparability, and quality of financial reporting.

• Companies are required to adopt the new formats for financial years starting o...read more