1. What is a hybrid electric vehicle?

is a type of hybrid vehicle which combines a conventional internal combustion engine

2. what  are  the advantages of hevs as compared to conventional vehicles?

A hybrid-electric produces less emissions from its engine than a comparably-sized gasoline car, as an HEV's gasoline engine is usually smaller than a pure fossil-fuel vehicle, and if not used to directly drive the car, can be geared to run at maximum

3. by what percentage can a hev reduce emissions as compared to a conventional vehicle?

77 percent                                                                                                                                                    

4. what are the components of a hybrid electric vehicle?

 Electricity and gasoline combine to power a hybrid vehicle, increasing fuel when traveling long distances and uphill. A hybrid electric vehicle (HEV) with a parallel configuration has an express mechanical link that is between the
efficiency and reducing oil dependence

5.name three types of  energy storage system in hevs.

6. name three types of power units in hevs.

whole sale,hydraviic,ground

7. name two types of propulsion in hevs.

fuel and gas

8. describe the series configuration in hevs.under what circumstanances should a hev with series  configuration be used?

when traveling long distances and uphill. A hybrid electric vehicle (HEV) with a parallel configuration has an express mechanical link that is between the

9. describe the parallel configuration is used in hevs.under what circumstances should a hev with  parallel configuration be used?

10.what type of configuration is used in the hevs available in the u.s today?

honda insight and the toyata prius use parallel configurations