Rodic Consultants Resident Engineer Interview Questions and Answers

Contact and catenary configuration involves the arrangement of overhead wires and supports for electric trains.

• Contact wire is typically made of copper or aluminum and carries the electric current for the train

• Catenary wire is used to support the contact wire and is usually made of steel

• The contact wire is suspended from the catenary wire using droppers or hangers

• The catenary wire is supported by overhead line equipmen...read more

Using 2*25 over 1*25 OHE provides redundancy and reliability in case of failures.

• 2*25 OHE provides redundancy in case of a single line failure

• 2*25 OHE allows for maintenance on one line while the other remains operational

• 2*25 OHE increases reliability and reduces downtime compared to 1*25 OHE

Relay testing by primary and secondary injection involves injecting current into the relay to test its functionality.

• Primary injection testing involves injecting a high current directly into the relay to simulate a fault condition.

• Secondary injection testing involves injecting a low current through the relay's input terminals to test its response.

• Primary injection testing is more accurate but requires specialized equip...read more

Safety in OHE and PSI work in Railway is crucial to prevent accidents and ensure smooth operations.

• Regular inspection and maintenance of overhead equipment (OHE) to prevent failures

• Proper training of personnel working on OHE and PSI to ensure they follow safety protocols

• Use of personal protective equipment (PPE) such as helmets, gloves, and safety harnesses

• Implementation of safety procedures like lockout-tagout (LOTO) ...read more

Impedance is the opposition to the flow of alternating current in a transformer, while efficiency is the ratio of output power to input power.

• Impedance is the total opposition to the flow of alternating current in a transformer, including resistance and reactance.

• Efficiency of a transformer is the ratio of output power to input power, expressed as a percentage.

• Higher impedance in a transformer can lead to voltage drops...read more

I am seeking new challenges and opportunities for growth in a different railway project.

• Seeking new challenges and opportunities for growth

• Interested in gaining experience in a different railway project

• Looking for a change in work environment or responsibilities

As a new Resident Engineer, I will focus on learning the responsibilities, building relationships with team members, seeking guidance from experienced colleagues, and continuously improving my technical skills.

• Focus on learning the responsibilities of the role

• Build relationships with team members and stakeholders

• Seek guidance and mentorship from experienced colleagues

• Continuously improve technical skills through traini...read more

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