Cosmo Films Mechanical Engineer Interview Questions and Answers

A type of mechanical seal is the cartridge seal which consists of a rotating and stationary face.

• Cartridge seals are pre-assembled units that can be easily installed

• They are commonly used in pumps and mixers

• The rotating face is attached to the shaft while the stationary face is mounted in the seal housing

• The seal faces are held together by a spring or other device to maintain contact and prevent leakage

SS 304 and SS 316 are both stainless steel alloys, but they differ in their composition and properties.

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

• SS 316 has better corrosion resistance than SS 304, especially in environments with chlorides or acids.

• SS 316 is more suitable for marine applications or those involving exposure to harsh chemicals.

• SS 304 is g...read more

The question is about the GCV of coal, SFR, and boiler efficiency.

• GCV stands for Gross Calorific Value and is a measure of the heating value of coal.

• SFR stands for Steam Fuel Ratio and is the ratio of steam generated to fuel consumption.

• Boiler efficiency is the ratio of energy output to energy input.

• Efficiency can be improved by reducing excess air, improving combustion, and using high-quality fuel.

• The GCV of coal affe...read more

The SP consumption of air compressors and refrigeration plants refers to the specific power consumption of these machines.

• SP consumption is the amount of power consumed per unit of output.

• Air compressors and refrigeration plants are commonly used in industrial settings.

• Efficient operation of these machines can lead to significant cost savings.

• Factors that affect SP consumption include machine design, operating conditio

Cooling tower chemicals are used to prevent scaling, corrosion, and biological growth in the tower.

• Chemicals are added to the water in the tower to prevent mineral buildup and corrosion.

• Biocides are used to prevent the growth of bacteria and other microorganisms.

• Examples of chemicals used include chlorine, bromine, and algaecides.

• Regular testing and maintenance of the tower's chemical levels is necessary to ensure prop...read more

Handled various equipments and proficient in troubleshooting.

• Handled electrical and mechanical equipments such as generators, pumps, motors, and compressors.

• Troubleshot issues related to power supply, control systems, and mechanical failures.

• Implemented preventive maintenance measures to ensure smooth functioning of equipments.

• Trained junior engineers on equipment handling and troubleshooting techniques.

• Collaborated wi...read more