10+ Interview Questions and Answers

There are two types of projection in technical drawings: orthographic and isometric.

• Orthographic projection shows the object as it appears from different directions.

• Isometric projection shows the object in a 3D view with equal angles between the axes.

• Orthographic projection is commonly used in engineering drawings.

• Isometric projection is commonly used in architectural and product design drawings.

Kaizen is a Japanese term meaning continuous improvement. 7QC Tools are a set of quality control tools. GD&T stands for Geometric Dimensioning and Tolerancing. Tolerance refers to the allowable variation in a dimension. The symbol of concentricity is a circle within a circle.

• Kaizen is a philosophy of continuous improvement in all aspects of life and work.

• 7QC Tools are a set of problem-solving tools used in quality control.

• GD&T is a system for defining and communicating engine...read more

Evaporator is a heat exchanger that converts liquid into vapor by absorbing heat from the surroundings.

• Evaporator is a key component in refrigeration and air conditioning systems.

• It operates at low temperatures to absorb heat from the surroundings and convert liquid refrigerant into vapor.

• The temperature of the evaporator is typically lower than the surrounding environment to facilitate heat transfer.

• The heat absorbed by the evaporator causes the liquid refrigerant to evapora...read more

Condenser, compressor, and evaporator are key components in a refrigeration system.

• Condenser: Converts refrigerant gas into liquid by releasing heat to the surroundings.

• Compressor: Increases the pressure and temperature of the refrigerant gas.

• Evaporator: Absorbs heat from the surroundings to evaporate the refrigerant into a gas.

• Example: In an air conditioning unit, the condenser is located outside to release heat, the compressor increases the pressure of the refrigerant, and ...read more

Safety is the practice of preventing accidents, injuries, and other potential hazards in the workplace.

• Always wear appropriate personal protective equipment (PPE)

• Follow safety protocols and procedures

• Keep work areas clean and organized

• Report any unsafe conditions or incidents to supervisors

• Attend safety training sessions regularly

Computer Numerical Control

• Computer Numerical Control is a manufacturing process where pre-programmed computer software dictates the movement of factory tools and machinery.

• CNC machines are used in various industries such as automotive, aerospace, and electronics for precision machining.

• Examples of CNC machines include milling machines, lathes, and laser cutters.

A type of gear is a mechanical device that transmits power or motion from one part of a machine to another.

• Gears can be classified into different types such as spur gears, helical gears, bevel gears, and worm gears.

• They are commonly used in machinery, vehicles, and various mechanical systems to transfer motion and power efficiently.

• Gears can change the speed, torque, and direction of rotation in a system.

• Examples of gears include the gears in a car transmission, bicycle gears...read more

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

• There are two types of current - AC (alternating current) and DC (direct current)

• Example: A light bulb connected to a battery has current flowing through it

Voltage is the difference in electric potential between two points in a circuit, measured in volts.

• Voltage is the driving force that pushes electric current through a circuit

• It is measured in volts (V)

• Voltage can be positive or negative, depending on the direction of current flow

• Higher voltage means more energy available to push current through a circuit

• Examples: A battery provides voltage to power a flashlight, a wall outlet provides voltage to power electronic devices

Resistance is the opposition to the flow of electric current in a circuit.

• Resistance is measured in ohms (Ω).

• It is caused by the collisions of electrons with atoms in a material.

• Higher resistance means lower current flow.

• Examples of materials with high resistance include rubber and glass.

• Examples of materials with low resistance include copper and silver.

There are two main types of gears: spur gears and helical gears.

• Spur gears have straight teeth and are the most common type of gear.

• Helical gears have angled teeth for smoother operation and less noise.

• Other types of gears include bevel gears, worm gears, rack and pinion gears, etc.

There are two main types of breaks: open (compound) and closed (simple) breaks.

• Open (compound) breaks: the bone breaks through the skin, increasing the risk of infection.

• Closed (simple) breaks: the bone breaks but does not penetrate the skin.

• Other types include greenstick fractures, comminuted fractures, and hairline fractures.

A flywheel in an engine is a rotating mechanical device used to store rotational energy.

• Flywheels help to maintain a constant speed of the engine by storing energy during the power stroke and releasing it during the non-power strokes.

• They also reduce vibrations and provide smoother operation of the engine.

• In vehicles, flywheels are commonly used in manual transmissions to assist in smooth gear changes.

• Flywheels are typically made of steel or cast iron and are attached to the ...read more

There are various types of laws, including criminal law, civil law, administrative law, and international law.

• Criminal law: deals with crimes and punishments

• Civil law: deals with disputes between individuals or organizations

• Administrative law: governs the activities of government agencies

• International law: governs relations between countries

COP of a chiller stands for Coefficient of Performance, which is a measure of the efficiency of a chiller system.

• COP is calculated as the ratio of cooling output to the energy input required to produce that cooling output.

• A higher COP value indicates a more efficient chiller system.

• COP can be calculated using the formula: COP = Cooling Output / Energy Input.

• For example, if a chiller has a COP of 4, it means that for every unit of energy input, the chiller produces 4 units of ...read more