Rodic Consultants Interview Questions, Process, and Tips

Specific gravity is the ratio of the density of a substance to the density of a reference substance, typically water.

• Specific gravity is a dimensionless quantity.

• It is calculated as: Specific Gravity = Density of substance / Density of water.

• For example, the specific gravity of water is 1.

• If a substance has a specific gravity greater than 1, it will sink in water (e.g., lead).

• If it is less than 1, it will float (e.g.,

Transformer testing procedures ensure operational efficiency and safety through various diagnostic tests.

• Visual Inspection: Check for physical damage, oil leaks, and corrosion.

• Insulation Resistance Test: Measure insulation resistance to ensure safety and performance.

• Turns Ratio Test: Verify the turns ratio to ensure proper voltage transformation.

• Power Factor Test: Assess the power factor to evaluate insulation conditio...read more

Key criteria for selecting traction substations include load requirements, location, and reliability.

• Load Requirements: Assess the maximum and average load to ensure the substation can handle peak demands.

• Location: Choose sites that minimize transmission losses and are accessible for maintenance.

• Reliability: Evaluate the reliability of the power supply and backup systems to prevent service interruptions.

• Environmental I...read more

The employment schedule of a mast involves planning its usage, maintenance, and operational timelines for efficiency.

• Define the mast's operational hours based on project requirements.

• Schedule regular maintenance checks to ensure safety and functionality.

• Coordinate with other teams to avoid conflicts in mast usage.

• Example: If a mast is used for construction, plan its use during peak work hours.

The cost of one km of new OHE supply and installation varies depending on several factors.

• The cost can vary based on the location and terrain of the installation site.

• The type and quality of materials used can also impact the cost.

• Labor costs, including skilled technicians and engineers, need to be considered.

• Additional costs may include equipment rental, transportation, and permits.

• Examples of factors affecting cost: ...read more

The rating of LA used at 25kv side in switching station and Traction sub station depends on the specific requirements and design of the stations.

• The rating of LA (Lightning Arrester) at the 25kv side in switching station and Traction sub station is determined based on the voltage level and the expected lightning surge levels.

• The LA rating is typically specified in terms of voltage withstand capability and energy absorp...read more

Transmission lines are used to transmit electrical energy from one point to another.

• Overhead transmission lines: These are the most common type of transmission lines and are used to transmit electricity over long distances.

• Underground transmission lines: These lines are buried underground and are used in urban areas or areas where overhead lines are not feasible.

• Submarine transmission lines: These lines are used to tra...read more

The types of control panels in an ESP control room in a thermal power plant vary depending on the specific plant and its requirements.

• Main control panel: This panel houses the main controls and indicators for the ESP system.

• Power control panel: This panel controls the power supply to the ESP system.

• Instrumentation control panel: This panel contains instruments and gauges for monitoring and controlling various parameter...read more