Manav Energy Welder Interview Questions and Answers

Parameters of transmission line include resistance, inductance, capacitance, and conductance.

• Resistance: opposition to the flow of current

• Inductance: ability to store energy in a magnetic field

• Capacitance: ability to store energy in an electric field

• Conductance: ability to conduct electric current

• Examples: coaxial cable, waveguide, twisted pair cable

Hysteresis curve is a graphical representation of the relationship between magnetic field strength and magnetization of a material.

• It shows the lag between the magnetic field and the magnetization of a material.

• It is used to study the magnetic properties of materials.

• It is commonly used in the design of magnetic circuits and devices.

• Examples include transformer cores, magnetic storage devices, and electric motors.

• The s...read more

We use step-up transformers to reduce power loss during transmission by increasing voltage and decreasing current.

• Step-up transformers increase voltage and decrease current, which reduces power loss during transmission.

• This is because power loss is proportional to the square of the current, so reducing current reduces power loss.

• For example, power is transmitted over long distances at high voltages (e.g. 500 kV) to red...read more

Power factor is the ratio of real power to apparent power in an AC circuit.

• Power factor is a measure of how efficiently electrical power is being used.

• It ranges from 0 to 1, with 1 being the most efficient.

• A low power factor can result in higher energy costs and equipment damage.

• Capacitors can be used to improve power factor.

• Power factor is important in industries where large amounts of electrical power are used.

There are several types of dampings in case of vibration, including viscous damping, hysteretic damping, and structural damping.

• Viscous damping: It occurs when a fluid or viscous material is used to dissipate energy and reduce vibration.

• Hysteretic damping: It is caused by the internal friction within a material, which converts mechanical energy into heat.

• Structural damping: It is inherent in the structure itself and is...read more

A substation in charge is responsible for the safe and efficient operation of an electrical substation.

• Overseeing the maintenance and repair of equipment

• Ensuring compliance with safety regulations

• Managing a team of technicians and operators

• Monitoring power flow and voltage levels

• Troubleshooting and resolving issues

• Coordinating with other departments and utilities

• Preparing reports and documentation

A boiler is a closed vessel in which water or other fluid is heated.

• Boilers are commonly used in industries and residential buildings for heating purposes.

• They generate steam or hot water by burning fuel or using electricity.

• Boilers can be classified into different types such as fire-tube, water-tube, and electric boilers.

• Examples of boilers include steam boilers used in power plants and gas boilers used for heating ho

To troubleshoot inverters, SCBs, transformers, and breakers, follow these pointers:

• Check for loose connections and wiring

• Inspect for physical damage or wear and tear

• Use a multimeter to test voltage and current

• Check for proper grounding

• Refer to manufacturer's manual for specific troubleshooting steps