10+ Interview Questions and Answers

Raw material cost includes the cost of all materials used in production, while other costs include expenses such as labor, overhead, and transportation.

• Raw material cost is the cost of all materials used in production, including direct and indirect materials.

• Other costs include expenses such as labor, overhead, and transportation.

• Raw material cost and other costs are important factors in determining the overall cost of production.

• For example, if a company produces furniture, ...read more

Current is the flow of electric charge, voltage is the electric potential difference, power is the rate at which work is done, and resistance is the opposition to the flow of electric current.

• Current is measured in amperes (A)

• Voltage is measured in volts (V)

• Power is measured in watts (W)

• Resistance is measured in ohms (Ω)

• Ohm's law relates these concepts: V = IR, where V is voltage, I is current, and R is resistance

Rectifier converts AC to DC, transformer changes voltage level, chopper controls DC voltage.

• Rectifier is an electronic device that converts AC to DC.

• Transformer is a device that changes voltage level of AC power.

• Chopper is an electronic device that controls DC voltage by switching it on and off.

• Rectifiers are used in power supplies, battery chargers, and welding machines.

• Transformers are used in power distribution systems, electronic devices, and audio equipment.

• Choppers are ...read more

The procedure for power transformer unloading and erection involves several steps to ensure safe and efficient installation.

• Prepare the site by clearing any obstacles and ensuring a stable foundation.

• Arrange for the necessary equipment and manpower for unloading and erection.

• Unload the power transformer from the transportation vehicle using cranes or other lifting equipment.

• Inspect the transformer for any damages during transportation.

• Prepare the foundation for the transforme...read more

Resonance in a DC circuit can be restricted by adding resistance, using inductors or capacitors, or changing the circuit design.

• Add resistance to the circuit to dampen oscillations

• Use inductors or capacitors to counteract the effects of resonance

• Modify the circuit design to avoid frequency matching with external sources

• Implement filters to block specific frequencies

Yes, I do quality checking of work in the site.

• As an electrical engineer, it is part of my responsibility to ensure the quality of work in the site.

• I conduct regular inspections and audits to identify any potential issues or deviations from standards.

• I review design documents, specifications, and drawings to ensure compliance with project requirements.

• I perform tests and measurements to verify the performance and functionality of electrical systems.

• I collaborate with other te...read more

To start the project after land selection, conduct a feasibility study, obtain necessary permits and approvals, develop a detailed project plan, and initiate the construction phase.

• Conduct a feasibility study to assess the technical and economic viability of the project.

• Obtain necessary permits and approvals from relevant authorities.

• Develop a detailed project plan outlining the scope, schedule, budget, and resources required.

• Initiate the construction phase by mobilizing equi...read more

The mode of payment for sub contractors in a substation project can vary depending on the terms agreed upon by the parties involved.

• The mode of payment can be a lump sum payment, where the sub contractor receives a fixed amount for their services.

• It can also be a progress-based payment, where the sub contractor is paid in installments based on the completion of specific project milestones.

• Another common mode of payment is a unit price payment, where the sub contractor is paid...read more

Power system is a network of electrical components used to transmit, distribute and generate electricity.

• Power system includes generators, transformers, transmission lines, distribution lines, and loads.

• It is responsible for delivering electricity from power plants to homes and businesses.

• Power system engineers design, operate and maintain the system to ensure reliability and efficiency.

• Examples of power systems include the electrical grid, solar power systems, and wind power...read more

The selection of a plot for an EHV substation involves considering factors such as proximity to power sources, land availability, environmental impact, and accessibility.

• Consider the proximity of the plot to power sources to minimize transmission losses.

• Ensure that the plot has sufficient land availability to accommodate the substation and future expansions.

• Evaluate the environmental impact of the plot, considering factors such as noise, electromagnetic fields, and visual imp...read more

Power losses in power system refer to the energy lost in the transmission and distribution of electricity.

• Power losses occur due to resistance in transmission lines, transformers, and other equipment.

• These losses result in a decrease in voltage and an increase in current, leading to heat dissipation.

• Power losses can be minimized by using high voltage transmission lines, efficient transformers, and proper maintenance.

• Examples of power losses include copper losses, iron losses,...read more

A transformer is an electrical device that transfers electrical energy between two or more circuits through electromagnetic induction.

• Transformers consist of two coils of wire, known as the primary and secondary coils.

• They work on the principle of electromagnetic induction, where a changing magnetic field induces a voltage in a nearby coil.

• Transformers are used to step up or step down voltage levels in electrical systems.

• Examples of transformers include power transformers use...read more

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

• Transformers consist of two coils of wire, known as the primary and secondary coils.

• They work on the principle of electromagnetic induction, where a changing current in the primary coil induces a voltage in the secondary coil.

• Transformers are used to step up or step down voltage levels in electrical systems.

• Examples of transformers include power transformers...read more