Thermax Limited Service Engineer Interview Questions and Answers

All Cummins engine questions

Q1. How types of Cummins engine
Ans. 
Cummins engines are available in various types including diesel, natural gas, and hybrid options.
• Cummins diesel engines are commonly used in heavy-duty trucks and construction equipment

• Cummins natural gas engines are popular for use in buses and other transportation vehicles

• Cummins offers hybrid engines that combine diesel and electric power for increased efficiency

• Other types of Cummins engines include marine engines
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Q2. How types of stock
Ans. 
There are two main types of stock: common stock and preferred stock.
• Common stock represents ownership in a company and typically comes with voting rights.

• Preferred stock usually does not have voting rights but has a higher claim on assets and earnings.

• Stock can also be classified based on market capitalization (small-cap, mid-cap, large-cap) or sector (technology, healthcare, finance).
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Q3. How types of thermostat
Ans. 
Thermostats can be categorized into mechanical, electronic, programmable, and smart thermostats.
• Mechanical thermostats use a bimetallic strip to control temperature.

• Electronic thermostats use electronic sensors to detect temperature changes.

• Programmable thermostats allow users to set schedules for heating and cooling.

• Smart thermostats can be controlled remotely via smartphone apps and may have features like learning al...read more
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Q4. What engine attended saying in model
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The question is asking about the engine specifications of a specific model.
• Identify the specific model being referred to

• Provide details about the engine specifications of that model

• Include any unique features or upgrades of the engine
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Q5. What is cooling system
Ans. 
Cooling system is a mechanism used to remove heat from a space or substance to maintain a lower temperature.
• Cooling systems can be found in various applications such as air conditioning units, refrigerators, and computer systems.

• They typically involve the circulation of a coolant or refrigerant to absorb and transfer heat away from the desired area.

• Cooling systems can be either air-cooled or liquid-cooled, depending on
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Q1. Disel engine combustion process
Ans. 
The diesel engine combustion process involves the ignition of fuel injected into the combustion chamber by compressed air.
• Diesel fuel is injected into the combustion chamber at high pressure

• The air in the combustion chamber is compressed by the piston, leading to high temperatures

• The high temperature air ignites the fuel, leading to combustion and the generation of power

• The combustion process in diesel engines is more
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Q2. What is two & four stroke engine.
Ans. 
A two-stroke engine completes a power cycle in two strokes of the piston, while a four-stroke engine completes it in four strokes.
• Two-stroke engines have a simpler design with fewer moving parts compared to four-stroke engines.

• Two-stroke engines typically produce more power for their size but are less fuel-efficient and emit more pollution.

• Four-stroke engines are more common in cars, motorcycles, and larger machinery d...read more
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Q3. What's is hydraulic component.
Ans. 
A hydraulic component is a device that utilizes fluid power to perform mechanical tasks.
• Hydraulic components use liquid to transmit power.

• Common examples include hydraulic cylinders, pumps, motors, valves, and hoses.

• They are often used in heavy machinery, construction equipment, and industrial applications.
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Q4. What is realy,and working principle
Ans. 
Realy is a type of relay used in electrical systems to control high power devices with low power signals.
• Relays are switches that open and close circuits electromechanically

• Realy is a type of relay specifically designed for high power applications

• Working principle involves an electromagnet that moves an armature to open or close the circuit

• Commonly used in industrial automation, automotive, and HVAC systems
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Q5. Least count of all megerment.
Ans. 
Least count is the smallest change in the measured quantity that can be detected by the measuring instrument.
• Least count is determined by the smallest division on the scale of the measuring instrument.

• It is important for accurate measurements and precision in engineering.

• For example, a ruler with millimeter divisions has a least count of 1 mm.

• A vernier caliper with 0.1 mm divisions has a least count of 0.1 mm.
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Q1. Which direction motor run
Ans. 
The direction a motor runs depends on the type of motor and the wiring configuration.
• The direction of rotation can be determined by the motor's design and the direction of the current flow.

• Some motors can run in both clockwise and counterclockwise directions depending on the wiring.

• Reversing the polarity of the power supply can change the direction of rotation in some motors.
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Q2. How made delta connection in motor terminal box
Ans. 
Delta connection in motor terminal box is made by connecting the three motor terminals in a triangular configuration.
• Connect the three motor terminals labeled U, V, and W in a triangular configuration.

• Ensure proper insulation and secure connections to prevent short circuits.

• Use appropriate tools and follow manufacturer's guidelines for wiring.

• Double check the connections before powering up the motor to avoid damage.

• Con...read more
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Q1. Oil and gas industry rotating equipments experience must
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Q2. Explain about pumps, fans , gearbox compressor motor generator
Ans. 
Pumps, fans, gearboxes, compressors, motors, and generators are essential components in various mechanical systems.
• Pumps are used to move fluids, such as water or oil, through a system.

• Fans are used to create airflow for cooling or ventilation purposes.

• Gearboxes are used to transmit power from one component to another at different speeds or torques.

• Compressors are used to increase the pressure of a gas, such as in air ...read more
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Q3. Explain data collection process
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Data collection process involves gathering, recording, and storing information for analysis and decision-making.
• Identify the data needed for analysis

• Determine the method of data collection (surveys, interviews, observations, etc.)

• Collect data using appropriate tools and techniques

• Ensure data accuracy and reliability

• Store data securely for future reference

• Analyze collected data to draw conclusions and make decisions
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Q4. Explain team management & work management
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Q5. Explain condition monitoring all tools
Ans. 
Condition monitoring of tools involves regularly checking and analyzing the performance and health of tools to prevent breakdowns.
• Regularly inspect tools for signs of wear and tear

• Use sensors to monitor tool performance in real-time

• Analyze data collected to predict potential failures

• Implement preventive maintenance based on monitoring results
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Technical skills test

Q1. Technical skills test
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Q1. Salary and Personal and company overviews discussion
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