Exam Question
(a) Sketch a screw displacement pump and explain its operation (10)
(b) State the factors which affect its efficiency. (6)
Class 4 (4th Engineer)
MEKG
📅 Jul 2024
Reference Answer
### (a) Screw Displacement Pump: Sketch and Operation
#### Principle of Operation
A screw pump is a type of rotary positive displacement pump. It operates by using one or more screws that rotate within a close-fitting casing. The rotation of the screws traps a fixed volume of fluid in cavities formed between the screw threads and the casing. This trapped fluid is then moved axially from the suction side to the discharge side, resulting in a continuous, non-pulsating flow.
#### Construction
#### Principle of Operation
A screw pump is a type of rotary positive displacement pump. It operates by using one or more screws that rotate within a close-fitting casing. The rotation of the screws traps a fixed volume of fluid in cavities formed between the screw threads and the casing. This trapped fluid is then moved axially from the suction side to the discharge side, resulting in a continuous, non-pulsating flow.
#### Construction
Full answer on MeoMock — surveyor-grade reference answers for 7,000+ written exam questions.
Prepare on Android — MeoMock on Google Play