Gear pumps are () type because they discharge a near constant amount of liquid regardless of pressure.
- Apositive displacement
- Bnon-positive displacement
- Cmixed-flow
- Daxial-flow
Gear pumps are () type because they discharge a near constant amount of liquid regardless of pressure.
1、Under rotary pumps are the gear, (), c
Under rotary pumps are the gear, (), cam-and-piston and screw types.AreciprocatingBdiffuserCturbineDvane
2、An advantage of a helical gear pump ov
An advantage of a helical gear pump over a simple gear pump is that the helical gear pump is capable of ().Amaintaining a steadier speedBde...
3、Gear-type flexible couplings are often
Gear-type flexible couplings are often used in diesel engine drive trains because they()Arequire no lubrication under normal operating conditions...
4、Gear pumps are () because they dischar
Gear pumps are () because they discharge a near constant amount of liquid regardless of pressure.Anegative displacement typeBturbine typeCpositive displacement typeDmixed-flow type
5、A gear pump belongs to () according to
A gear pump belongs to () according to its working principle.Areciprocating pumpsBpositive displacement pumpsCcentrifugal pumpsDcentripetal pum
6、Centrifugal pumps are popular because
Centrifugal pumps are popular because they are very simple in construction,and produce smooth, constant, () discharge.Anon-pulsatingBpulsatingCpositiveDnon-positive