Precitek Components Shift Supervisor Interview Questions and Answers

Q1. What is carbon black
Ans. 
Carbon black is a fine powder made from incomplete combustion of hydrocarbons.
• It is used as a reinforcing filler in rubber products.

• It is also used as a black pigment in inks, paints, and plastics.

• Carbon black is produced by burning petroleum oil or natural gas.

• It is a common ingredient in tires, conveyor belts, and other industrial rubber products.
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Q2. What is Air preheater
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Air preheater is a device used to heat the air before it enters the combustion chamber of a boiler.
• It improves the efficiency of the boiler by recovering waste heat from the flue gas.

• It reduces fuel consumption and emissions.

• There are two types of air preheaters: recuperative and regenerative.

• Recuperative air preheaters use a heat exchanger to transfer heat from the flue gas to the incoming air.

• Regenerative air preheat...read more
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Q1. Production department from any questions
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Q2. Production department from any questions
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Q1. Production department asked any questions
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Q1. Types of chiller, refrigerant
Ans. 
There are two types of chillers: air-cooled and water-cooled. Common refrigerants include R-22, R-134a, and R-410A.
• Air-cooled chillers use air to remove heat from the refrigerant, while water-cooled chillers use water.

• R-22 is a commonly used refrigerant, but it is being phased out due to its harmful effects on the environment.

• R-134a is a more environmentally friendly refrigerant, but it is less efficient than R-22.

• R-41...read more
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Engineering reasoning

Q1. Types of chiller, compressor & plastic,
Ans. 
There are different types of chillers, compressors, and plastics used in engineering.
• Types of chillers include absorption, centrifugal, and screw chillers.

• Compressors can be classified as reciprocating, rotary, and centrifugal compressors.

• Plastics used in engineering include polyethylene, polypropylene, and polystyrene.

• Each type of chiller, compressor, and plastic has its own unique properties and applications.
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Q2. Pneumatic & hydraulic, valves & actuators
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Q3. Cooling tower, range, approach
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Q4. Gear box & its types
Ans. 
Gear box is a mechanical device that transmits power from an engine to the wheels. There are various types of gearboxes.
• Gearboxes are used in automobiles, industrial machinery, and other applications.

• The most common types of gearboxes are manual, automatic, and continuously variable transmissions (CVT).

• Manual gearboxes require the driver to manually shift gears using a clutch and gear stick.

• Automatic gearboxes shift ge...read more
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