S.D Enterprises Interview Questions and Answers

Oil lubricates engine parts, reduces friction, and prevents wear and tear.

• Oil lubricates engine parts to prevent metal-to-metal contact

• Oil reduces friction between moving parts, which reduces heat and wear

• Oil helps to cool the engine by carrying heat away from the combustion chamber

• Oil prevents corrosion and rust by forming a protective layer on engine parts

• Regular oil changes are necessary to maintain engine health and performance

Quality control is the process of ensuring that a product meets the desired quality standards, while quality assurance is the process of preventing defects before they occur.

• Quality control involves inspecting and testing products to ensure they meet the desired quality standards.

• Quality assurance involves implementing processes and procedures to prevent defects from occurring in the first place.

• Quality control is reactive, while quality assurance is proactive.

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Kinetic energy is the energy possessed by an object due to its motion.

• Kinetic energy is directly proportional to the mass of the object and the square of its velocity.

• Examples of kinetic energy include a moving car, a rolling ball, and a flying airplane.

• Kinetic energy can be converted into other forms of energy, such as potential energy or thermal energy.

• The unit of measurement for kinetic energy is joules (J).

0.05 mm is equal to 50 microns.

• 1 mm = 1000 microns

• 0.05 mm = 50 microns

Potential energy is the energy possessed by an object due to its position or state.

• It is stored energy that can be converted into kinetic energy.

• Examples include a stretched spring, a raised weight, or a compressed gas.

• The formula for potential energy is PE = mgh, where m is mass, g is acceleration due to gravity, and h is height.

• Potential energy can be gravitational, elastic, electric, or chemical.

• It is an important concept in physics and engineering.

The least count of a vernier is the smallest measurement that can be read from the scale.

• It is determined by the number of divisions on the vernier scale and the main scale.

• It is calculated by dividing the smallest division on the main scale by the number of divisions on the vernier scale.

• For example, if the smallest division on the main scale is 1 mm and the vernier scale has 10 divisions, the least count would be 0.1 mm.

Time cycle refers to the duration of a repetitive process or event.

• It is the time taken for a process to complete and start again.

• It can be used to measure the frequency of an event.

• For example, the time cycle of a washing machine is the time it takes to complete one wash cycle.

• In manufacturing, time cycle is used to measure the time it takes to produce one unit of a product.