OCS Group Technician Interview Questions and Answers

Q1. What is the role of (APFC)
Ans. 
The role of APFC (Automatic Power Factor Controller) is to maintain the power factor of electrical systems by automatically switching capacitors in and out of the circuit.
• APFC monitors the power factor of the system and activates or deactivates capacitors accordingly.

• It helps in reducing electricity bills by improving power factor and reducing reactive power consumption.

• APFC ensures efficient utilization of electrical ...read more
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Q2. What is the Transformation Ratio?
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Transformation ratio is the ratio of the number of turns in the primary winding to the number of turns in the secondary winding of a transformer.
• Transformation ratio determines the voltage transformation between the primary and secondary windings of a transformer.

• It is calculated as the ratio of the number of turns in the primary winding to the number of turns in the secondary winding.

• For example, if a transformer has ...read more
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Basic Questions asked related to mathematics, GK, probability, statistics and English

Q1. Introduce yourself and
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Q2. Short and long term goal
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Short term goal is to learn new skills and contribute to the company. Long term goal is to become a team leader.
• Short term goal: Learn new skills and contribute to the company

• Long term goal: Become a team leader

• Examples: Attend training sessions, take on new projects, collaborate with colleagues

• Examples: Develop leadership skills, mentor junior team members, lead projects
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Q1. Why should we hire you?
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Q2. What are your strengths and weaknesses?
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Q3. Where do you see yourself in 5 years?
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Q4. Why are you looking for a change?
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Q5. Share details of your previous job.
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Q6. What is your family background?
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Q7. What are your salary expectations?
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Q8. Tell me about yourself.
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Q1. TFH information
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Q2. Technical all questions
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Q1. What is current
Ans. 
Current is the flow of electric charge in a circuit.
• Current is measured in Amperes (A)

• It is the rate of flow of electric charge through a conductor

• Direct current (DC) flows in one direction, while alternating current (AC) changes direction periodically
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Q2. What is working of circuit breaker
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A circuit breaker is an electrical switch designed to protect an electrical circuit from damage caused by overload or short circuit.
• Circuit breakers detect faults in the electrical system and interrupt the flow of electricity to prevent damage.

• They consist of a switch mechanism and a tripping mechanism that activates when a fault is detected.

• Circuit breakers can be reset manually or automatically after tripping.

• Example...read more
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Q3. What is transformer
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A transformer is an electrical device that transfers electrical energy between two or more circuits through electromagnetic induction.
• Consists of two coils of wire (primary and secondary) wrapped around a core

• Primary coil receives electrical energy and creates a magnetic field

• Magnetic field induces a voltage in the secondary coil, transferring energy

• Used in power distribution, voltage regulation, and electrical isolati...read more
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Versant Test was cleared, I was there in the company for almost 6 hours.

Q1. Interview went very well, even tough I was there since morning they have not gone through my resume and they rejected me with the reason that I do not have stability in my resume.
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Q2. What is your future goal?
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Q3. Are you willing to study further?
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Q1. Refrigeration cycle, types of chiller
Ans. 
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. Process of Chillers operation?
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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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