Prasol Chemicals Mechanical Engineer Interview Questions and Answers

Stainless steel pipelines are commonly used for transporting hazardous chemicals due to their corrosion resistance and durability.

• Stainless steel pipelines are preferred for their resistance to corrosion from hazardous chemicals.

• PVC pipelines are not suitable for hazardous chemicals as they can degrade and leak.

• Carbon steel pipelines can be used for some hazardous chemicals, but may require additional coatings or linin...read more

To calculate the steam of a boiler, you need to know the boiler's efficiency, steam flow rate, and specific enthalpy of steam.

• Calculate the energy input by multiplying the mass flow rate of steam by the specific enthalpy of steam.

• Determine the energy output by dividing the energy input by the boiler's efficiency.

• The steam flow rate can be measured using a flow meter, and the specific enthalpy of steam can be obtained f...read more

The module of a coal fired hot air generator typically includes a combustion chamber, heat exchanger, fan, and exhaust system.

• Combustion chamber where coal is burned to produce heat

• Heat exchanger to transfer heat from combustion gases to the air

• Fan to circulate the heated air

• Exhaust system to remove combustion byproducts

SS 304 and SS 316 are both stainless steel alloys, but with different compositions and properties.

• SS 304 contains 18% chromium and 8% nickel, while SS 316 contains 16% chromium, 10% nickel, and 2% molybdenum.

• SS 316 is more corrosion-resistant than SS 304, especially in environments with chlorides or acids.

• SS 316 is more expensive than SS 304.

• SS 304 is commonly used in food processing equipment, while SS 316 is used in

API seal cooling plan is a system used to cool the mechanical seal of a pump or compressor to prevent overheating and failure.

• API stands for American Petroleum Institute, which sets standards for seal cooling plans in the oil and gas industry.

• The cooling plan typically involves circulating a cooling fluid, such as water or oil, through a jacket around the seal.

• The cooling fluid absorbs heat from the seal and carries it...read more