Cmr Nikkei Interview Questions and Answers

I am a graduate engineer trainee with a strong family background. My hobbies include playing guitar and my favorite subject is mechanical engineering.

• I am a graduate engineer trainee

• I come from a strong family background

• My hobbies include playing guitar

• My favorite subject is mechanical engineering

Copper is extracted from ore through several stages including crushing, grinding, and concentration.

• The ore is first crushed into small pieces

• It is then ground to a fine powder

• The powder is then concentrated using various methods such as froth flotation

• The concentrated ore is then roasted to remove any remaining impurities

• Finally, the copper is extracted using electrolysis or smelting

• The final product is usually in the

Electrorefining, electrowinning, and electroplating are all electrochemical processes used for different purposes.

• Electrorefining is used to purify metals through electrolysis, such as copper refining.

• Electrowinning is used to extract metals from their ores through electrolysis, such as zinc production.

• Electroplating is used to coat a metal object with a thin layer of another metal, such as gold plating on jewelry.

• All ...read more

Wire drawing at room temperature is cold working for both steel and tin rods.

• Wire drawing involves pulling a metal rod through a die to reduce its diameter.

• Cold working is a process where the metal is deformed at room temperature.

• Hot working is a process where the metal is deformed at high temperatures.

• Steel and tin rods can be cold worked at room temperature through wire drawing.

• Hot working is typically done at high t...read more

Aluminium Extrusion press technical data includes specifications such as tonnage, billet size, speed, and power consumption.

• Tonnage refers to the force exerted by the press on the billet during extrusion.

• Billet size determines the maximum size of the extruded profile.

• Speed is the rate at which the billet is pushed through the die.

• Power consumption is the amount of energy required to operate the press.

• Other technical da...read more

Power factor is a measure of how efficiently electrical power is being used. To maintain a power factor of 0.80, various measures can be taken.

• Power factor is the ratio of real power (kW) to apparent power (kVA).

• To improve power factor, reactive power should be reduced.

• Installing power factor correction capacitors can help improve power factor.

• Regular maintenance of electrical equipment can prevent power factor degrada...read more

Yes, SiMn slag can be used in various applications such as road construction, cement production, and as a fertilizer.

• SiMn slag can be used as a substitute for sand in road construction.

• It can also be used as a raw material in cement production.

• SiMn slag is rich in nutrients and can be used as a fertilizer.

• It can also be used in the production of bricks and tiles.

• SiMn slag can be used as a source of silicon and manganes...read more

C3 value is a measure of coke formation in a refinery. It should be less than 0.1 wt%.

• C3 value is the weight percentage of coke formed during thermal cracking of petroleum products.

• It is an important parameter to monitor in a refinery as high C3 value can lead to fouling of equipment and reduced efficiency.

• The ideal C3 value is less than 0.1 wt%.

• C3 value can be reduced by optimizing the cracking process and using addit...read more

Reductions and flux are chemical reactions used in metallurgy to extract metals from their ores.

• Reduction is the process of removing oxygen from a metal oxide to obtain the metal.

• Flux is a substance that is added to the ore to lower its melting point and to remove impurities.

• The reaction formula for reduction is: Metal oxide + Carbon → Metal + Carbon dioxide

• The reaction formula for flux is: Impurities + Flux → Slag

• Exam...read more