Automobile Engineering Interview Questions and Answers
Question - 21 : - What is SAE? Mention the importance of SAE to the automobile domain.
Answer - 21 : -
SAE stands for society of automotive engineers. This society is responsible for developing the standards for the engineering of powered vehicles of all kind. The vehicles may include car, boat, truck and even aircraft. SAE has developed standards for ground vehicles and aerospace vehicles. SAE also encourages students of engineering, technology, science and math’s disciplines. This society has been publishing technical information since 1906.
Question - 22 : - How does the thermostat work?
Answer - 22 : -
When the engine is too cold the thermostat closes the main valve, thus stopping the flow to the radiator. When the engine is too hot, it opens the main valve for normal circulation through the radiator.
Question - 23 : - Why involute curve used in gear?
Answer - 23 : -
It’s smooth to drive the gear.
In gears contact is only point, this type is curve take the more load than normal one
Question - 24 : - What does it mean when your car emits white smoke?
Answer - 24 : -
White smoke is a sign of a coolant leak as is milky brownish oil. This could be due to bad head gasket or cracked block. Burning oil smoke is usually more bluish in color. White smoke is usually associated with a coolant leak, but burning oil can also look like white smoke
Question - 25 : - What happens if gasoline is used in a Diesel engine? Diesel engine will work?
Answer - 25 : -
No, it will not work, as the Compression ratio of Petrol engine is 6 to 10 & that of Diesel engine is 15 to 22. Thus on such high compression, gasoline gets highly compressed & it may blast.
Question - 26 : - What are two types of vehicle suspensions?
Answer - 26 : -
• Rigid axle suspension
• Independent suspension
Question - 27 : - What loads are coming to axle?
Answer - 27 : -
- Vertical bending load due to vehicle weight
- Driving torque
- Braking torque
- Side thrust
Question - 28 : - What are the functions of a gear box?
Answer - 28 : -
- It has to provide torque multiplication
- It has to provide neutral position
- It has to provide the means to reverse a vehicle
Question - 29 : - Why you need a gear box?
Answer - 29 : -
When a vehicle is moving on a road, it has to encounter different resistances depending upon the road surface, vehicle speed and road gradient. Hence, wheel torque required at road wheels is different for different operating conditions. To satisfy this requirement, a gearbox is necessary in a vehicle.
Question - 30 : - Why is the frame narrow at front?
Answer - 30 : -
- The frame is narrowed at the front to provide a better steering lock.
- This also permits smaller turning circle radius