10+ Hitachi Astemo Diploma Trainee Engineer Interview Questions and Answers

Electrical CAD is used to design and document electrical systems. Perpendicularity symbol is drawn using CAD tools.

• Electrical CAD helps in creating accurate and detailed electrical designs

• It allows for easy modification and updating of designs

• CAD tools can be used to draw symbols for various electrical components and properties

• To draw the symbol of perpendicularity, use the CAD tool for drawing lines and add a small square at the intersection of the lines

• The perpendicularity ...read more

PNP and NPN transistors are two types of bipolar junction transistors with opposite polarity.

• PNP has a layer of N-type semiconductor sandwiched between two layers of P-type semiconductor, while NPN has a layer of P-type semiconductor sandwiched between two layers of N-type semiconductor.

• In PNP, the current flows from the emitter to the base and then to the collector, while in NPN, the current flows from the emitter to the collector through the base.

• PNP is used in high-side sw...read more

Computer Numerical Control

• Stands for Computer Numerical Control

• Used in manufacturing processes to control machining tools and equipment

• Automates the operation of machines based on pre-programmed sequences of commands

• Examples include CNC milling machines, CNC routers, CNC lathes

There are various types of valves used in hydraulic systems.

• There are directional control valves, pressure control valves, flow control valves, and check valves.

• Directional control valves control the direction of fluid flow.

• Pressure control valves regulate the pressure of the fluid.

• Flow control valves regulate the flow rate of the fluid.

• Check valves allow fluid to flow in one direction only.

• Other types of valves include relief valves, sequence valves, and throttle valves.

Operational Amplifier (Op-Amp) is a popular Linear Integrated Circuit.

• Op-Amp is used in various applications such as amplifiers, filters, oscillators, comparators, etc.

• Some popular Op-Amps are LM741, LM358, LM324, etc.

• Op-Amps have high input impedance, low output impedance, and high gain.

• Op-Amps can be used in both inverting and non-inverting configurations.

PLC stands for Programmable Logic Controller. NO and NC are actuation states used in electrical circuits.

• PLC is a digital computer used to automate industrial processes.

• NO stands for Normally Open and NC stands for Normally Closed.

• In NO state, the circuit is open when the device is not activated.

• In NC state, the circuit is closed when the device is not activated.

• NO and NC are used in electrical circuits to control the flow of current.

• Examples of devices that use NO and NC sta...read more

Types of breaks include mechanical breaks, hydraulic breaks, and electromagnetic breaks.

• Mechanical breaks rely on friction to slow down or stop motion, such as brake pads on a bicycle.

• Hydraulic breaks use fluid pressure to transfer force, commonly found in car braking systems.

• Electromagnetic breaks use electromagnetic force to slow down or stop motion, often used in industrial machinery.

Five instruments of linear integrated circuit

• Operational Amplifier (Op-Amp)

• Voltage Regulator

• Comparator

• Timer

• Phase Locked Loop (PLL)

An automobile company is a company that designs, manufactures, and sells vehicles such as cars, trucks, and motorcycles.

• Automobile companies produce a wide range of vehicles for consumers.

• They often have research and development departments to innovate new technologies for vehicles.

• Examples include Ford, Toyota, BMW, and Honda.

The purpose of automobiles is to provide transportation for people and goods, increasing mobility and convenience.

• Transportation of people and goods

• Increased mobility and convenience

• Efficient travel over long distances

• Economic growth through trade and commerce

• Enhanced quality of life by connecting people and communities

Capacitor is an electronic component that stores electrical energy in an electric field.

• Used in power supply circuits to filter out noise and ripple

• Used in timing circuits to control the rate of oscillation

• Used in audio circuits to filter out unwanted frequencies

• Used in motor starting circuits to provide a boost of power

• Examples: camera flash, air conditioner, radio receiver

Force is a push or pull acting upon an object resulting from its interaction with another object.

• Force is a vector quantity, meaning it has both magnitude and direction.

• Types of forces include gravitational force, electromagnetic force, frictional force, tension force, and normal force.

• For example, when you push a door to open it, you are applying a force in the direction of the door.

• Another example is the force of gravity pulling objects towards the Earth.

A CNC operator is a skilled professional who operates computer numerical control machines to perform various tasks like cutting, shaping, and finishing materials.

• CNC operators use computer programs to control and operate machines for tasks like drilling, milling, and turning.

• They interpret blueprints, set up machines, and monitor the production process to ensure accuracy and efficiency.

• CNC operators are responsible for maintaining and troubleshooting machines to ensure smooth...read more

Quality refers to the degree of excellence or superiority of a product or service.

• Quality is the measure of how well a product or service meets the expectations and requirements of customers.

• It involves meeting or exceeding standards and specifications.

• Quality can be subjective and may vary based on individual preferences and needs.

• Quality can be assessed through various methods such as inspections, testing, and customer feedback.

• Examples of quality include a durable and reli...read more

An op-amp is a type of electronic amplifier with high gain and differential inputs.

• Op-amp stands for operational amplifier.

• It is a key component in analog circuits and is widely used in signal processing and amplification.

• Op-amps have two inputs, an inverting and a non-inverting input, and a single output.

• They are typically used to amplify and manipulate signals, perform mathematical operations, and control circuit behavior.

• Op-amps can be used in various applications such as ...read more

An RLC circuit is a circuit containing a resistor, inductor, and capacitor.

• RLC stands for Resistor-Inductor-Capacitor.

• It is a type of circuit used in electronics and electrical engineering.

• The circuit can be used for filtering, tuning, and oscillation.

• Examples include bandpass filters, notch filters, and resonant circuits.

• The behavior of the circuit depends on the values of the components and the frequency of the input signal.