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All lenses with Nikon mount are compatible with Nikon D40. If the question rephrase : "What lenses are able to autofocus with Nikon D40", then the answer is : the new Nikon AF-S lenses (with Silent Wave Motor inside), Sigma lens bearing HSM code, and upcoming Tamron lenses (18-200mm, 17-50mm and 70-300mm).
Drives - I assume you are referring to Variable frequency Drives. The drives are useful when a motor needs to rotate at different speeds when in operation with out stopping it.
Yes but older AF lenses that do not have an autofocus motor in them will not autofocus with the D5000.
A motor car driver.
Yes, it will fit. However, you will still need to see if the lens you have has or does not have features like autofocus or CPU connectors that will carry all the info that your camera needs... If it is a Nikon Lens it will work fine. So will others like Sigma, Tamron and Tokina. Carl Zeiss may not give you all the functions but will work in manual mode.
a motor car driver
A chauffeur is a person who drives a motor car for other people.
yes sir
The motor drives the belt :witch drives a plate witch when engaged drives the wheels (short version) :with drives a pulley that turns the blower (short version)
Disk drives.
The motor drives the belt :witch drives a plate witch when engaged drives the wheels (short version) :with drives a pulley that turns the blower (short version)
a motor drives something a generator is driven by something