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10+ Hindustan Unilever Graduate Engineer Trainee (Get) Interview Questions and Answers

Updated 5 Feb 2024

Q1. What is vapour compression refrigeration cycle ?

Ans.

Vapour compression refrigeration cycle is a process used in refrigeration systems to remove heat from a space and maintain a cool temperature.

  • Vapour compression refrigeration cycle is based on the principle of phase change of a refrigerant.

  • The cycle consists of four main components: compressor, condenser, expansion valve, and evaporator.

  • The refrigerant enters the compressor as a low-pressure vapor and is compressed to a high-pressure vapor.

  • The high-pressure vapor then enters ...read more

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Q2. How many joints are there in propeller shaft ?

Ans.

The number of joints in a propeller shaft depends on the design and type of the shaft.

  • The number of joints can vary depending on the length and complexity of the propeller shaft.

  • A typical propeller shaft may have one or two joints.

  • Some propeller shafts may have more joints if they are designed for flexibility or to accommodate changes in length.

  • The joints in a propeller shaft are usually universal joints or constant velocity joints.

  • The purpose of the joints is to allow the pr...read more

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Hindustan Unilever Graduate Engineer Trainee (Get) Interview Questions and Answers for Freshers
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Q3. What is relation between boiling point & vacuum ?

Ans.

The boiling point of a substance decreases with decreasing pressure in a vacuum.

  • Boiling point is the temperature at which a substance changes from a liquid to a gas.

  • In a vacuum, the pressure is significantly lower than atmospheric pressure.

  • Lower pressure in a vacuum reduces the intermolecular forces holding the substance together.

  • As a result, less energy is required to overcome these forces and the boiling point decreases.

  • For example, water boils at 100 degrees Celsius at atm...read more

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Q4. How many centimeters are there in one inch ?

Ans.

There are 2.54 centimeters in one inch.

  • 1 inch is equal to 2.54 centimeters.

  • The conversion factor between inches and centimeters is 2.54.

  • To convert inches to centimeters, multiply the number of inches by 2.54.

  • To convert centimeters to inches, divide the number of centimeters by 2.54.

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Q5. What kinds of gears are used in differential ?

Ans.

The gears used in a differential are bevel gears and pinion gears.

  • Bevel gears are used to transfer power from the drive shaft to the differential housing.

  • Pinion gears are used to transfer power from the differential housing to the axle shafts.

  • The bevel gears and pinion gears work together to allow the wheels to rotate at different speeds while maintaining power distribution.

  • The bevel gears are typically spiral bevel gears, which provide smoother operation and better load-carr...read more

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Q6. What is one tonnage of refrigeration in KW ?

Ans.

One tonnage of refrigeration is equal to approximately 3.5169 kilowatts (KW).

  • One ton of refrigeration is the amount of heat required to melt one ton (2000 pounds) of ice in 24 hours.

  • It is a unit used to measure the cooling capacity of refrigeration systems.

  • The conversion factor from tonnage of refrigeration to KW is approximately 3.5169.

  • To convert tonnage of refrigeration to KW, multiply the tonnage by 3.5169.

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Q7. What are the types of heat exchanger ?

Ans.

There are several types of heat exchangers, including shell and tube, plate, and finned tube heat exchangers.

  • Shell and tube heat exchangers consist of a shell with multiple tubes inside, allowing for efficient heat transfer.

  • Plate heat exchangers use a series of plates to separate the hot and cold fluids, maximizing heat transfer surface area.

  • Finned tube heat exchangers have fins attached to the tubes, increasing the heat transfer surface area and improving efficiency.

  • Other ty...read more

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Q8. What is differential & its function ?

Ans.

The differential is a device that allows the wheels of a vehicle to rotate at different speeds while maintaining traction.

  • The differential is located in the center of the axle and is connected to the drive shaft.

  • It consists of a set of gears that distribute power from the engine to the wheels.

  • The main function of the differential is to allow the wheels to rotate at different speeds, especially when turning.

  • When a vehicle takes a turn, the outer wheel travels a longer distance...read more

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Q9. What is propeller shaft in automobile ?

Ans.

The propeller shaft is a component in an automobile that transmits power from the transmission to the differential.

  • It is a long, cylindrical shaft made of steel or aluminum.

  • It connects the transmission output shaft to the differential input shaft.

  • It allows the power generated by the engine to be transferred to the wheels.

  • It is commonly used in rear-wheel drive vehicles.

  • In four-wheel drive vehicles, there are usually two propeller shafts, one for the front wheels and one for t...read more

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Q10. What is universal joints ?

Ans.

Universal joints are mechanical devices used to connect two shafts that are not in line with each other.

  • Universal joints are also known as U-joints or Cardan joints.

  • They are commonly used in automotive applications to transmit power from the engine to the wheels.

  • Universal joints allow for the transmission of rotational motion at different angles and speeds.

  • They consist of a cross-shaped component with needle bearings and a yoke on each end.

  • The needle bearings allow for smooth...read more

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