Sodexo Hvac Technician Interview Questions and Answers

Q1. Process of Chillers operation?
Ans. 
Chillers operate by removing heat from a liquid through a refrigeration cycle.
• Chillers use a compressor to compress refrigerant gas, which then condenses into a liquid.

• The liquid refrigerant is then pumped through an evaporator, where it absorbs heat from the chilled water.

• The refrigerant then returns to the compressor to repeat the cycle.

• Chillers can be air-cooled or water-cooled, depending on the application.

• Chillers...read more
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Q2. What's the work of actuator ?
Ans. 
Actuator is a device that converts electrical energy into mechanical motion.
• Actuators are used in HVAC systems to control the flow of air, water, or steam.

• They can be electric, pneumatic, or hydraulic.

• Examples of actuators include valves, dampers, and motors.

• Actuators are essential for maintaining temperature, humidity, and air quality in HVAC systems.
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Q1. Refrigeration cycle, types of chiller
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The refrigeration cycle is a process of removing heat from a space or substance. Types of chillers include absorption, centrifugal, and reciprocating.
• The refrigeration cycle involves four main components: compressor, condenser, expansion valve, and evaporator

• Absorption chillers use a heat source to drive the refrigeration cycle, while centrifugal and reciprocating chillers use mechanical energy

• Centrifugal chillers are ...read more
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Q1. What is your strength
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Q1. What is transformers Besics of Trasformer Induction motor UPS What is ht lt panels HT ,LT PANELS Apfc panels And all about utilities maintenance Star delta starter Vfd drive
Ans. 
Transformers are electrical devices that transfer electrical energy between two or more circuits through electromagnetic induction.
• Transformers are used to step up or step down voltage levels in electrical power transmission and distribution systems.

• They consist of two or more coils of wire, known as windings, which are wound around a core made of magnetic material.

• The primary winding is connected to the power source, ...read more
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Q2. Besic knowledge about Diesel Generators
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Q3. What is fire alarm system
Ans. 
A fire alarm system is a network of devices that detect and alert people to the presence of fire or smoke.
• Fire alarm systems can include smoke detectors, heat detectors, and manual pull stations.

• When a device detects smoke or heat, it sends a signal to a control panel, which activates alarms and alerts authorities.

• Fire alarm systems are essential for protecting people and property from the dangers of fire.

• Examples of p...read more
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Q1. Speak about yourself
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Q1. Questions to test knowledge of the market
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Q1. Market related questions
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Q1. Background questions
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Maths,lease knowledge, reasoning

Q1. Previous experience, educational background, technical questions related to lease, expectations
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A vs b abstract. I was told that I would be evaluated based on communication and articulation skills

Q1. Tell me about your self
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