RUNGTA Diploma Electrical Engineer Interview Questions and Answers

There are several types of transformers used in electrical engineering.

• Power transformers

• Distribution transformers

• Instrument transformers

• Auto transformers

• Isolation transformers

• Step-up transformers

• Step-down transformers

The number of earthing required for commencing a transformer depends on the type and size of the transformer.

• The number of earthing required for a transformer depends on its rating and the local electrical regulations.

• In general, a single earthing electrode is sufficient for small transformers with ratings up to a few hundred kVA.

• For larger transformers, multiple earthing electrodes may be required to ensure proper gro...read more

Silica gel is a desiccant commonly used to absorb moisture and prevent the growth of mold and mildew.

• Silica gel is a porous form of silicon dioxide.

• It is often found in small packets or sachets.

• It is used in various industries such as electronics, pharmaceuticals, and food packaging.

• Silica gel can absorb moisture up to 40% of its own weight.

• It is non-toxic and chemically inert.

• Common uses include preserving the freshne...read more

VCB stands for Vacuum Circuit Breaker. It is a type of electrical switchgear used for protecting electrical circuits from overloads and short circuits.

• VCB uses vacuum as the arc quenching medium instead of oil or air.

• It is installed in high voltage power systems, such as substations and power plants.

• VCBs are commonly used in distribution networks, generator circuits, and transformer circuits.

• They provide reliable and e...read more

The acceptable current for humans depends on various factors such as duration, frequency, and pathway.

• The acceptable current for humans is typically below 1 mA for low-frequency currents.

• For high-frequency currents, the acceptable current is lower, usually below 0.1 mA.

• The duration of exposure also plays a significant role in determining the acceptable current.

• The pathway of the current through the body, such as hand-t...read more

An alternator is an electrical machine that converts mechanical energy into electrical energy.

• An alternator is commonly used in vehicles to charge the battery and power the electrical system.

• It operates on the principle of electromagnetic induction.

• Alternators produce alternating current (AC) which is then converted to direct current (DC) using rectifiers.

• They consist of a rotor, stator, and diodes.

• The rotor is driven ...read more

A CT transformer, also known as a current transformer, is an electrical device used to measure alternating current (AC) by stepping down the current to a lower value.

• CT transformers are commonly used in power systems to measure high currents without directly connecting measuring instruments to the circuit.

• They consist of a primary winding, which carries the current to be measured, and a secondary winding, which is conn...read more

The process of Water Treatment Plant (W.T.P) involves various stages to purify water for consumption.

• 1. Coagulation: Adding chemicals to water to make particles clump together.

• 2. Sedimentation: Allowing the clumped particles to settle at the bottom.

• 3. Filtration: Passing water through filters to remove remaining particles.

• 4. Disinfection: Adding chlorine or other chemicals to kill bacteria and viruses.

• 5. Distribution: ...read more

To ensure successful delivery from project conception to execution, I would focus on clear communication, detailed planning, proactive problem-solving, and regular monitoring.

• Establish clear project goals and objectives

• Create a detailed project plan with timelines and milestones

• Regularly communicate with stakeholders to ensure alignment and address any issues

• Proactively identify and address potential risks and challeng...read more

I have over 5 years of technical experience in project management, construction, and engineering design.

• Managed multiple construction projects from initiation to completion

• Proficient in AutoCAD and other design software

• Experience in creating project schedules and budgets

• Knowledge of construction materials and methods

• Collaborated with cross-functional teams to ensure project success

HVDC is a technology used to transmit high voltage DC power over long distances. Offshore connections refer to power transmission from offshore wind farms.

• HVDC is more efficient than AC transmission over long distances

• Offshore connections require specialized equipment and installation techniques

• HVDC is used for offshore connections to transmit power from offshore wind farms to the mainland

• Examples of HVDC projects incl...read more

A motor is a device that converts electrical energy into mechanical energy to perform work.

• Motors are commonly used in various applications such as electric vehicles, industrial machinery, and household appliances.

• They come in different types such as AC motors, DC motors, and stepper motors.

• Motor capacity refers to its power rating, typically measured in horsepower (HP) or kilowatts (kW).

• Higher capacity motors can gene...read more