10+ Diploma Trainee Interview Questions and Answers

2 stroke engines have a power stroke in each revolution, while 4 stroke engines have a power stroke in every other revolution.

• 2 stroke engines have a simpler design and are lighter than 4 stroke engines.

• 2 stroke engines have a higher power-to-weight ratio compared to 4 stroke engines.

• 4 stroke engines are more fuel-efficient and produce less pollution than 2 stroke engines.

• Examples of 2 stroke engines include chainsaws, motorcycles, and outboard motors, while examples of 4 str...read more

The ratio of fuel and air mixture in combustion engine is called air-fuel ratio.

• Air-fuel ratio is the amount of air mixed with fuel in the combustion chamber of an engine.

• The ideal air-fuel ratio for gasoline engines is 14.7:1.

• The air-fuel ratio can be adjusted to optimize engine performance and fuel efficiency.

• A rich air-fuel ratio (more fuel, less air) can cause poor fuel economy and increased emissions.

• A lean air-fuel ratio (more air, less fuel) can cause engine misfires a...read more

Addendum and dedendum are terms used in gear design to describe specific parts of a gear tooth.

• Addendum is the distance between the pitch circle and the top of the gear tooth.

• Dedendum is the distance between the pitch circle and the bottom of the gear tooth.

• Addendum and dedendum are important in determining the strength and durability of gears.

• For gears to mesh properly, the addendum of one gear must align with the dedendum of the mating gear.

• Example: In a spur gear, the adde...read more

Compression ratio for diesel is higher than petrol due to their different combustion characteristics.

• Compression ratio is the ratio of the volume of the combustion chamber from its largest capacity to its smallest capacity.

• Diesel engines have a higher compression ratio than petrol engines due to their different combustion characteristics.

• The compression ratio for diesel engines typically ranges from 15:1 to 20:1, while for petrol engines it ranges from 8:1 to 12:1.

• Higher comp...read more

A NOT gate is a logic gate that inverts the input signal.

• A NOT gate has one input and one output.

• The output of a NOT gate is the inverse of its input.

• The input can be either a high voltage level (1) or a low voltage level (0).

• The output will be the opposite of the input.

• For example, if the input is 1, the output will be 0, and vice versa.

Explanation of Carnot and Diesel cycles through diagrams and examples

• Carnot cycle is a theoretical cycle that involves four reversible processes: isothermal expansion, adiabatic expansion, isothermal compression, and adiabatic compression

• Diesel cycle is a practical cycle used in diesel engines that involves four processes: adiabatic compression, constant pressure heat addition, adiabatic expansion, and constant volume heat rejection

• Carnot cycle is used as a benchmark for the ...read more

A 3 phase induction motor is an AC electric motor that operates on the principle of electromagnetic induction.

• It has a stator and a rotor

• The stator has 3 windings that are spaced 120 degrees apart

• The rotor is made up of conductive bars that are short-circuited at both ends

• When AC voltage is applied to the stator windings, a rotating magnetic field is created which induces a current in the rotor bars, causing the rotor to rotate

• It is commonly used in industrial applications su...read more

Yes, I am okay with the offered salary of 15K CTC.

• I understand the company's budget constraints and I am willing to work within it.

• I am more focused on gaining experience and learning new skills than just the salary.

• I am confident that with my hard work and dedication, I can prove my worth and earn a higher salary in the future.

There are currently around 15 car companies operating in India.

• There are both domestic and international car companies in India.

• Some of the popular car companies in India are Maruti Suzuki, Hyundai, Tata Motors, Mahindra & Mahindra, Honda, Toyota, and Ford.

• The Indian government has also launched the National Electric Mobility Mission Plan to promote the use of electric vehicles in the country.

• The Indian car market is highly competitive with companies constantly launching new ...read more

A transformer is an electrical device that transfers electrical energy from one circuit to another through electromagnetic induction.

• Transformers are used to increase or decrease the voltage of an alternating current (AC) power supply.

• They consist of two coils of wire, known as the primary and secondary, which are wound around a magnetic core.

• When an AC voltage is applied to the primary coil, it creates a magnetic field that induces a voltage in the secondary coil.

• Transformer...read more

Engineering tooling refers to the tools and equipment used in the manufacturing and production of engineering components.

• Engineering tooling includes cutting tools, jigs, fixtures, dies, molds, and gauges.

• These tools are used to shape, form, and measure materials to precise specifications.

• Examples of engineering tooling include drill bits, milling cutters, and lathe tools.

• Engineering tooling is essential for ensuring quality and consistency in the manufacturing process.

Alternator produces AC current while generator produces DC current.

• Alternator has stationary armature and rotating magnetic field while generator has rotating armature and stationary magnetic field.

• Alternator is more efficient and reliable than generator.

• Alternator is commonly used in modern vehicles while generator is used in older vehicles.

• Alternator produces higher output voltage than generator.

• Alternator requires less maintenance than generator.

The 5S rule is a workplace organization method that aims to improve efficiency and productivity by maintaining a clean and organized work environment.

• The 5S rule consists of five steps: Sort, Set in Order, Shine, Standardize, and Sustain.

• Sort involves removing unnecessary items from the workplace to eliminate clutter and improve safety.

• Set in Order focuses on arranging necessary items in a logical and efficient manner for easy access and retrieval.

• Shine involves cleaning and ...read more

V equals the product of current and resistance.

• Ohm's law states that V = IR.

• V is the voltage, I is the current, and R is the resistance.

• This formula is used to calculate the voltage in a circuit given the current and resistance.

• It can also be rearranged to solve for current or resistance.