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CI engines use compression ignition while SI engines use spark ignition.
CI engines have higher compression ratios than SI engines.
CI engines are more fuel efficient but produce more emissions.
SI engines are used in most cars while CI engines are used in heavy-duty vehicles like trucks and buses.
posted on 2 Sep 2017
A diesel generator works by converting diesel fuel into mechanical energy which is then converted into electrical energy.
Diesel fuel is injected into the combustion chamber where it ignites and creates high pressure gases that push the piston down, creating mechanical energy.
The mechanical energy is then converted into electrical energy through the use of an alternator.
The alternator uses a magnetic field and a conduct...
A diesel engine works by compressing air in the cylinder, which heats up and ignites the fuel injected into the cylinder.
Air is drawn into the cylinder and compressed by the piston
The compressed air heats up and ignites the fuel injected into the cylinder
The explosion pushes the piston down, which turns the crankshaft and powers the engine
Diesel engines are more efficient than gasoline engines because they compress the...
A train doesn't need a differential because its wheels are fixed to the same axle and rotate at the same speed.
Train wheels are fixed to the same axle
Wheels rotate at the same speed
Differential is used in vehicles with wheels that rotate at different speeds
Differential allows for smooth turning
Petrol engines have lower compression ratios compared to diesel engines.
Petrol engines have lower compression ratios to prevent knocking or detonation.
Diesel engines have higher compression ratios to ignite the fuel without spark plugs.
Higher compression ratios in diesel engines result in better fuel efficiency and torque.
Petrol engines require lower compression ratios to accommodate the lower octane rating of petrol f...
posted on 30 Jul 2021
I applied via Campus Placement and was interviewed before Jul 2020. There were 3 interview rounds.
posted on 10 Sep 2020
I applied via Campus Placement and was interviewed in Mar 2020. There was 1 interview round.
I am a mechanical engineer with expertise in designing and analyzing mechanical systems.
I have a Bachelor's degree in Mechanical Engineering from XYZ University.
I have worked as a mechanical engineer for 5 years at ABC Company, where I designed and optimized mechanical components for various projects.
I am proficient in CAD software such as AutoCAD and SolidWorks, and have experience in conducting simulations and stress...
Petrol engines use spark ignition while diesel engines use compression ignition.
Petrol engines use spark plugs to ignite the fuel-air mixture, while diesel engines rely on compression to ignite the fuel.
Petrol engines have a higher power-to-weight ratio compared to diesel engines.
Diesel engines are more fuel-efficient than petrol engines.
Petrol engines are typically used in cars, motorcycles, and small vehicles, while ...
Vernier calipers and micrometers are precision measuring tools used in mechanical engineering.
Vernier calipers are used to measure dimensions with high accuracy, typically up to 0.02 mm.
Micrometers are used for even more precise measurements, typically up to 0.001 mm.
Both tools are commonly used in mechanical engineering for dimensional inspection and quality control.
Vernier calipers have a sliding scale and a main sca...
I chose mechanical engineering because of my fascination with steam power and its applications.
I have always been intrigued by the power and versatility of steam as a source of energy.
Steam technology has a long history and has played a crucial role in the development of various industries.
I find the principles of thermodynamics and fluid mechanics involved in steam systems to be intellectually stimulating.
Working with...
Excel is a spreadsheet software used for organizing, analyzing and manipulating data.
Excel allows users to create tables, charts, and graphs to represent data visually.
It can perform complex calculations and analysis on large sets of data.
Excel can be used for budgeting, financial analysis, project management, and more.
It also has features for data validation, sorting, filtering, and conditional formatting.
Excel can im...
Motivating workers is crucial for productivity and job satisfaction.
Recognize and appreciate their efforts
Provide opportunities for growth and development
Create a positive work environment
Set clear goals and expectations
Offer incentives and rewards
Encourage teamwork and collaboration
I applied via Naukri.com and was interviewed in Apr 2021. There were 3 interview rounds.
I applied via Company Website and was interviewed in Dec 2020. There were 4 interview rounds.
I applied via Naukri.com and was interviewed in Oct 2020. There was 1 interview round.
posted on 3 Feb 2022
I applied via Walk-in and was interviewed before Feb 2021. There was 1 interview round.
posted on 21 Mar 2024
I applied via Naukri.com and was interviewed in Feb 2024. There was 1 interview round.
Engine working refers to the process of converting fuel into mechanical energy to power a vehicle or machine.
Fuel is ignited in the combustion chamber, creating high-pressure gases that push the pistons down.
The pistons are connected to the crankshaft, which converts the up-and-down motion into rotational motion.
The rotational motion is transferred to the transmission, which then powers the wheels or other machinery.
Th...
A 4-stroke diesel engine works on the principle of internal combustion, where fuel is ignited by compressed air.
Intake stroke: air is drawn into the cylinder
Compression stroke: air is compressed, raising its temperature
Power stroke: fuel is injected and ignited, causing a rapid expansion of gases and pushing the piston down
Exhaust stroke: the piston pushes the exhaust gases out of the cylinder
Diesel engines are more fu...
There are several types of engines, including internal combustion, electric, hybrid, and rotary engines.
Internal combustion engines are the most common and include gasoline and diesel engines.
Electric engines use electricity to power the vehicle and are becoming more popular.
Hybrid engines combine both internal combustion and electric engines.
Rotary engines are less common and use a unique design to generate power.
Othe...
A value timing diagram is a graphical representation of the timing relationship between input and output signals.
It shows the timing relationship between input and output signals
It is used to analyze the behavior of digital circuits
It helps in identifying timing violations and optimizing circuit performance
It consists of a horizontal time axis and vertical voltage axis
Examples include setup and hold time diagrams for f
The 3 main engine systems are fuel, ignition, and cooling.
Fuel system: responsible for delivering fuel to the engine
Ignition system: responsible for igniting the fuel-air mixture
Cooling system: responsible for regulating the engine temperature
Examples: gasoline engine, diesel engine, hybrid engine
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