That would be two driven axles.
"Day cab" refers to a truck which does not have an attached sleeper berth. "Twin screw"... on a single axle truck or a tandem axle with only one live axle (more common in Europe than the US), the driveshaft goes from the transmission output straight to the live axle differential. That's what's colloquially known as single screw. Most tandem axle trucks have both drive axles as live axles, and the driveshaft goes from the transmission output to the power divider (also known as interaxle differential), which in itself is a differential. Power is distributed from the power divider evenly to both axles in normal operation. This is what's known as a twin screw system.
One has a single drive axle, and the other has two. They're rated to haul different weights, and the tandem axle trucks usually have a twin screw system, where a power divider transfers power to both axles, whereas the single axle won't have the power divider.
screw and wheel and axle A screw or a twisted inclined plane seems to be the answer you seek.
The Pulley is one of them. Wheel and axle. lever. screw. wedge. inclined plane.
There are two configurations for a tandem truck... the first - more common in Europe - is known as "single screw". The driveshaft goes to the differential of one axle, and that's the only live axle. In cases such as this, the additional axle is typically a lift axle. In N. America, tandem trucks normally use a twin screw configuration, where the driveshaft goes to a power divider... that power divider is essentially a differential, and has outputs going to both axles... ergo, both axles have power supplied to them at all times. A lot of people think that the power divider lock engages one of the axles.. this is not true.. it simply locks the outputs so that they always rotate at a matching speed.
It is one simple piece it does not need multiple pieces to make it.
Inclined plane. One of the six; screw, wedge, incline plane, pulley, wheel and axle, and lever.
a truck or tractor with two rear axles both of which are being driven by the engine not just one of them
On a tandem truck, you have two configurations - single screw, where the driveshaft goes directly from the transmission output directly to the differential of a live axle... the other axle will be a dead axle, and does not propel the vehicle. The other configuration is known as twin screw, and this is what a 6x4 truck is. Both axles are live axles, and the driveshaft goes from the transmission output to the power divider input. The power divider is essentially a differential, which ensures that power is distributed evenly to both output shafts (one going to each axle differential). It's always in use. As for the lock, you use it as little as possible. Icy conditions, off-road use, or times when an axle is lifted off the ground would typically be when you'd use the PDL.
A simple machine is a machine which does not use a motor and does not consist of more than one simple machine. There are six types of simple machines. Wheel and axle, pulley, inclined plane, lever, screw, and wedge. A complex machine uses a motor, and a compound is made up of one or more simple machines.
Neither is turning freely in a twin screw drive configuration.
one engine running at reduced speed, and controlling the vessel with the other engine