main fuel pumps for turbine engine are generally what

What is the question? Main fuel pumps are just what they sound like.pumps that move fuel from the main tanks to the engines.

Made out of metal, have hoses connected to them, and pump fuel ot of the fuel cell.

The answer is - TURNED TO THE ON POSITION.

Next time just study for the test like the rest of us.

For a bunch of smart a$$ , they're all wrong.

The boost pumps in the tank pump the fuel to the main pump, then the main pump pumps fuel to the engine.

I've never seen fuel hoses on any turbine engines. The fuel runs through stainless steel tubing at very high pressure.

The main pumps r geared to the engine by the gearbox so when the engine turns the pumps turn. There is no ON OFF switch.

The electric boost pumps in the wing can be turned on.

l will take a stab at this.

Main fuel pumps are generally engine driven mechanical pumps. Or engine driven fuel pumps to provide motive flow for jet pumps. with backup electric pumps.

Do we have a winner?

Mice turning a wheel which turns a generator to power the cotton candy machine.

what do u mean? Are u asking the type? Like positive displacement of the gear type? or vane type ?
Main fuel pumps in turbine engines r usually now a series of components coupled together & is called the main engine control (MEC) It consists of the main fuel pump, filter, servo fuel heater, fuel oil/heat exchanger & of course the MEC itself. Not only they ensure positive flow of fuel to the fuel nozzles on the engine, the fuel also become servos for hydraulically controlling the engine air system (VSV,VBV) & engine oil cooling.