Ferring Pharmaceuticals Interview Questions and Answers

Q1. What is HVAC system
Ans. 
HVAC system stands for Heating, Ventilation, and Air Conditioning system, which is used to control the temperature, humidity, and air quality in a building.
• HVAC systems regulate indoor air quality by providing ventilation, maintaining temperature, and controlling humidity levels.

• They consist of components such as furnaces, air conditioners, heat pumps, ductwork, thermostats, and air filters.

• Examples of HVAC systems inc...read more
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Q2. Detail of periodic qualification
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Periodic qualification involves obtaining certifications and licenses to ensure competency and compliance with industry standards.
• HVAC engineers should regularly update their certifications and licenses to stay current with industry regulations.

• Continuing education courses can help HVAC engineers stay up-to-date on the latest technologies and best practices.

• Some examples of certifications for HVAC engineers include EPA...read more
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Q3. Working process of chiller
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Chiller is a device that removes heat from a liquid via a vapor-compression or absorption refrigeration cycle.
• Chiller absorbs heat from a process water stream and transfers it to a refrigerant.

• The refrigerant then carries the heat to the condenser where it is released.

• The chilled water is circulated through the building to cool the air or equipment.

• Chillers can be air-cooled, water-cooled, or evaporatively cooled.

• Commo...read more
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Q4. How to maintain differential pressure of area
Ans. 
Maintain differential pressure by adjusting airflow, sealing leaks, and monitoring equipment.
• Adjust airflow using dampers or variable frequency drives to balance pressure

• Seal leaks in ductwork or building envelope to prevent pressure loss

• Monitor equipment regularly to ensure proper functioning and make adjustments as needed
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Q5. Cooling tower discharge pressure
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Cooling tower discharge pressure is the pressure at which water is discharged from the cooling tower.
• Cooling tower discharge pressure is typically measured in pounds per square inch (psi) or inches of water column (in. WC).

• The discharge pressure is influenced by factors such as the flow rate of water, the height of the cooling tower, and the design of the tower.

• Maintaining the correct discharge pressure is important fo...read more
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Q1. How many stability Conditions there?Explain in details
Ans. 
There are three stability conditions: asymptotic stability, bounded-input bounded-output stability, and Lyapunov stability.
• Asymptotic stability: System returns to a stable equilibrium point over time.

• Bounded-input bounded-output stability: System output remains bounded for bounded input signals.

• Lyapunov stability: System satisfies Lyapunov's direct method or Lyapunov's indirect method.
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Q2. Types of Stability Zone & Which we are Coming
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There are three types of stability zones: Zone I, Zone II, and Zone III. We are currently in Zone III.
• Zone I: Most stable, low risk of failure, typically used for long-term storage of products.

• Zone II: Intermediate stability, moderate risk of failure, used for products with moderate shelf life.

• Zone III: Least stable, high risk of failure, used for products with short shelf life or requiring special storage conditions.
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Q3. Particle Size Analyser Basic Principle , Limit , Unit , Range, PDI
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Q4. What is Zeta Sizer , Basic Principle , Unit , Range , Uses
Ans. 
Zeta Sizer is a device used to measure the electrophoretic mobility of particles in a liquid medium.
• Basic principle involves measuring the velocity of particles in an electric field.

• Unit of measurement is usually in zeta potential (mV).

• Range of measurement typically varies depending on the specific model of the Zeta Sizer.

• Common uses include studying colloidal stability, particle size distribution, and surface charge o...read more
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Q5. What is Solution Clarity Test?? How to determine it
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Solution Clarity Test is a test to determine the transparency of a solution.
• Solution Clarity Test is used to assess how clear or transparent a solution is.

• It is commonly performed in industries such as pharmaceuticals, food and beverage, and cosmetics.

• One common method to determine solution clarity is visual inspection against a light source.

• Another method is to use a spectrophotometer to measure the absorbance of ligh...read more
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Q6. What is Osmolarity ? Unit , Limit , Range , Definition
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Q1. HVAC related questions
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Q2. Technical depth
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Q1. Confirmation for processing
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