Automobile I.Q. Question and Answer-2019!!
Automobile I.Q. Questions and Answers-2019!!
These may be among the easiest and most common Automobile I.Q. Questions and Answers-2019 for mechanical engineers to answer during an interview. Often tailored to your sub discipline of automobile engineering, these automobile questions will test both basic and detailed knowledge, so it may be a good idea to brush up on your definitions before heading into the interview.
Automobile engineers can expect to see these safety questions and many others during the course of a job interview. If you don’t know the exact definition of a tool or term, try to provide the best description you can and talk about how it’s used in your everyday work. This will show the interviewer that you know how things work and understand their relevance to the job.
#automobilequestion, #techmecha, #automobileinterview,
In this video you can find Automobile I.Q. Questions and Answers-2019 which is reference for industrial purpose.
This question is very helpful for fresher engineer who are willing to build career abroad.
Here we list up question with answer which you can find in this video:
QUESTION NUMBER 1: Explain why diesel engine is known as high torque and petrol engine as high speed engine?
ANSWER: Each power stroke in a petrol engine releases more heat and is converted into mechanical energy due to a higher rate of burning. This is the reason petrol engine has higher power and acceleration.
Diesel engine is a compression ignition engine with higher compression ratio, therefore extreme pressure is high. Since the piston of a diesel engine is larger, more torque is delivered in produced.
QUESTION NUMBER 2: What is the purpose of fuel injector pump in the engine?
ANSWER: In the modern oil engines the injection of the fuel into the cylinder is accomplished not by an air blast but by means of injection pump. These pumps are built strongly and accurately. For preventing after drip and consequent burning of the fuel left on the spray nozzle tips, its pressure must drop as quickly and accurately as it rises.
QUESTION NUMBER 3: Why diesel engines are called as high torque engines and petrol engines as high speed engines?
ANSWER: As diesel engine has high compression ratio therefore it has high torque. Petrol engines have high speeds coz it produces more heat at combustion chamber because of high calorific value moreover heat losses will be more in the cases of diesel engine than petrol engine such as compression losses turbulent loses exhaust loses...Any way even though the compression ratio is high for diesel engine it won’t contribute to increased power but an increased torque that’s why diesel engines have high torque than petrol engines for same capacity.
QUESTION NUMBER 4: Why consumption of lubricating oil is more in two-stroke cycle petrol engine than four-stroke cycle petrol engine?
ANSWER: In two-stroke engine lube oil is mixed with petrol and thus some lube oil is blown out through the exhaust valves by scavenging and charging air. There is no such wastage in four stroke petrol engine.
QUESTION NUMBER 5: What is the function of thermostat in cooling system of an engine?
ANSWER: Thermostat ensures optimum cooling because excessive cooling decreases the overall efficiency. It allows cooling water to go to radiator beyond a predetermined temperature.
QUESTION NUMBER 6: In some engines glycerin is used in place of water for cooling of engine. Why?
ANSWER: Glycerin has boiling point of 90°C which increases its heat carrying capacity. Thus weight of coolant gets reduced and smaller radiator can be used.
These may be among the easiest and most common Automobile I.Q. Questions and Answers-2019 for mechanical engineers to answer during an interview. Often tailored to your sub discipline of automobile engineering, these automobile questions will test both basic and detailed knowledge, so it may be a good idea to brush up on your definitions before heading into the interview.
Automobile engineers can expect to see these safety questions and many others during the course of a job interview. If you don’t know the exact definition of a tool or term, try to provide the best description you can and talk about how it’s used in your everyday work. This will show the interviewer that you know how things work and understand their relevance to the job.
#automobilequestion, #techmecha, #automobileinterview,
In this video you can find Automobile I.Q. Questions and Answers-2019 which is reference for industrial purpose.
This question is very helpful for fresher engineer who are willing to build career abroad.
Here we list up question with answer which you can find in this video:
QUESTION NUMBER 1: Explain why diesel engine is known as high torque and petrol engine as high speed engine?
ANSWER: Each power stroke in a petrol engine releases more heat and is converted into mechanical energy due to a higher rate of burning. This is the reason petrol engine has higher power and acceleration.
Diesel engine is a compression ignition engine with higher compression ratio, therefore extreme pressure is high. Since the piston of a diesel engine is larger, more torque is delivered in produced.
QUESTION NUMBER 2: What is the purpose of fuel injector pump in the engine?
ANSWER: In the modern oil engines the injection of the fuel into the cylinder is accomplished not by an air blast but by means of injection pump. These pumps are built strongly and accurately. For preventing after drip and consequent burning of the fuel left on the spray nozzle tips, its pressure must drop as quickly and accurately as it rises.
QUESTION NUMBER 3: Why diesel engines are called as high torque engines and petrol engines as high speed engines?
ANSWER: As diesel engine has high compression ratio therefore it has high torque. Petrol engines have high speeds coz it produces more heat at combustion chamber because of high calorific value moreover heat losses will be more in the cases of diesel engine than petrol engine such as compression losses turbulent loses exhaust loses...Any way even though the compression ratio is high for diesel engine it won’t contribute to increased power but an increased torque that’s why diesel engines have high torque than petrol engines for same capacity.
QUESTION NUMBER 4: Why consumption of lubricating oil is more in two-stroke cycle petrol engine than four-stroke cycle petrol engine?
ANSWER: In two-stroke engine lube oil is mixed with petrol and thus some lube oil is blown out through the exhaust valves by scavenging and charging air. There is no such wastage in four stroke petrol engine.
QUESTION NUMBER 5: What is the function of thermostat in cooling system of an engine?
ANSWER: Thermostat ensures optimum cooling because excessive cooling decreases the overall efficiency. It allows cooling water to go to radiator beyond a predetermined temperature.
QUESTION NUMBER 6: In some engines glycerin is used in place of water for cooling of engine. Why?
ANSWER: Glycerin has boiling point of 90°C which increases its heat carrying capacity. Thus weight of coolant gets reduced and smaller radiator can be used.
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