10+ JGC Corporation Interview Questions and Answers

Types of rectifiers include half-wave, full-wave, and bridge rectifiers.

• Half-wave rectifier only allows one half of the AC input waveform to pass through

• Full-wave rectifier allows both halves of the AC input waveform to pass through

• Bridge rectifier uses four diodes to rectify the AC input waveform

• Examples include diode rectifiers and semiconductor rectifiers

Answering questions related to safety supervisor role including flora and fauna, TWA and STEL, mock drill responsibility, risk assessment CTRA, and site control and asset protection.

• Flora refers to plant life and fauna refers to animal life.

• TWA (Time-Weighted Average) is the average exposure to a substance over a specified period of time, while STEL (Short-Term Exposure Limit) is the maximum exposure allowed over a short period of time.

• Mock drill responsibility involves plann...read more

Scope of work can be controlled by defining clear objectives, creating a detailed project plan, and monitoring progress regularly.

• Define clear objectives and deliverables

• Create a detailed project plan with timelines and milestones

• Identify potential risks and develop contingency plans

• Regularly monitor progress and adjust the plan as needed

• Communicate changes and updates to stakeholders

Synchronous motors have constant speed and require external excitation, while induction motors have variable speed and are self-starting.

• Synchronous motors have a constant speed determined by the frequency of the power supply.

• Induction motors have variable speed depending on the load.

• Synchronous motors require external excitation to generate a magnetic field, while induction motors are self-starting.

• Synchronous motors are used in applications where constant speed is required,...read more

To cover delay of project, identify the cause, adjust timeline, allocate additional resources, and communicate with stakeholders.

• Identify the cause of delay

• Adjust timeline and prioritize tasks

• Allocate additional resources if necessary

• Communicate with stakeholders regularly

• Reassess project plan and adjust as needed

Construction work can be managed by planning, organizing, and controlling resources and activities to achieve project goals.

• Develop a detailed project plan and schedule

• Assign tasks and responsibilities to team members

• Monitor progress and adjust plans as necessary

• Ensure safety and compliance with regulations

• Communicate effectively with stakeholders

• Manage budget and resources

• Use technology and software to streamline processes

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

• Consists of two coils of wire, known as primary and secondary coils

• Primary coil receives electrical energy and induces a magnetic field

• Magnetic field then induces a voltage in the secondary coil

• Used to step up or step down voltage levels in electrical systems

Ohm's law states that the current flowing through a conductor is directly proportional to the voltage across it, and inversely proportional to the resistance of the conductor.

• Ohm's law is represented by the formula: V = I * R, where V is voltage, I is current, and R is resistance.

• It helps in calculating the relationship between voltage, current, and resistance in an electrical circuit.

• For example, if a circuit has a voltage of 12 volts and a resistance of 4 ohms, the current ...read more

The Bernoulli principle states that as the speed of a fluid increases, its pressure decreases.

• The principle is named after Daniel Bernoulli, a Swiss mathematician and physicist.

• It is based on the conservation of energy principle.

• The principle is commonly used to explain the lift generated by an airplane wing.

• It also explains how a shower curtain is pulled inward when water flows out of a showerhead.

• The Bernoulli equation is a mathematical expression of the principle.

P&ID stands for Piping and Instrumentation Diagram.

• P&ID is a schematic representation of a process system that shows the piping, equipment, and instrumentation involved.

• It provides detailed information about the process flow, control loops, and equipment connections.

• P&IDs are used by engineers and operators to understand and communicate how a system operates.

• They are essential in designing, constructing, and maintaining process plants.

• Examples of P&ID symbols include valves, ...read more