Electrotherm Engineer Interview Questions and Answers

Heat transfer can be taken from various sources such as conduction, convection, and radiation.

• Conduction involves the transfer of heat through a material without any movement of the material itself.

• Convection involves the transfer of heat through the movement of fluids, such as air or water.

• Radiation involves the transfer of heat through electromagnetic waves, such as from the sun or a fire.

• Heat transfer can be used in...read more

The law of thermometer states that the volume of a liquid expands as its temperature increases.

• The law is based on the principle of thermal expansion.

• The expansion of the liquid is measured by a calibrated scale on the thermometer.

• Different types of thermometers use different liquids, such as mercury or alcohol.

• The law is used in various fields, including science, engineering, and medicine.

DM water is produced by removing impurities from raw water through a process called demineralization.

• DM water stands for demineralized water.

• It is produced by removing minerals and impurities from raw water.

• The process of demineralization involves various techniques such as ion exchange, reverse osmosis, and distillation.

• DM water is used in various industries like power plants, pharmaceuticals, and electronics manufact...read more

Preheaters are devices used to heat a substance or material before a process or operation.

• Types of preheaters include direct-fired preheaters, indirect-fired preheaters, regenerative preheaters, and recuperative preheaters.

• Direct-fired preheaters directly heat the substance using a flame or burner.

• Indirect-fired preheaters heat the substance indirectly through a heat transfer medium.

• Regenerative preheaters use a rotati...read more

Proper coal blend can be determined by analyzing the properties of different coals and their compatibility with each other.

• Analyze the properties of different coals such as ash content, volatile matter, fixed carbon, etc.

• Determine the required coke quality and select coals that can produce coke of desired quality.

• Consider the availability and cost of different coals.

• Ensure compatibility of coals by conducting small-sca...read more