shashankTurbomachine
Mechanical
- Oct 25, 2011
- 52
What is the use of a pump?
What type of blade gives maximum efficiency? Bent backward
If the liquid is changed from kerosene to gasoline, will there be any change in pump head?
Head is not related to specific gravity hence no change. Pressure depends upon density.
What is the position of delivery valve when centrifugal pump starts? Fully closed.
What is rejection criteria as per API 610?
What range of pressures are handled by Centrifugal pump?
What is the maximum viscosity CP can handle?—3300Cp
What is the limit for NSS?
What is signification of NS?
What is difference between OH & BB pump?
What are the measures to increase NPSHA and decrease NPSHr?
What are affinity laws?
Why is vapor pressure significant in seal selection?
How is stuffing box pressure arrive for OH, BB & VS?
What is the instrument in seal plan?
How mechanical seal is classified (type, arrangement and category)
When torsional & lateral analysis is performed?
What to check in GA of pump?
Why the nozzle load is 2X API values preferred?
What are the 6 points performance test is performed?
What is MAWP?
What is system curve, why it is not started from zero?
What is Euler’s equation?
What is vibration limit for API 610?
When a hydrodynamic bearing is considered?
What is the preferred and allowable operating range?
What is the minimum bearing life?
What is the published efficiency and rated efficiency?
What is the limit of axial split pump as per API 610?
What is single and double volute? How is casing classified in centrifugal pump?
What margin is applied on motor for CP?
When motor is designed for EOC operation?
What NDT procedures are applied to centrifugal pump?
What is the MOC of mechanical seal?
What is the effect on motor while doing a job for gulf region?
What is the temperature at which forced bearing cooling is applied for bearing? Process temp > 205 C ambient above 55C
Why dummy stage is employed in a multi-stage pump? For possibility of pressure increase in future.
Why diffuser and volute casing is employed?
Diffuser is used in multi-stage pump as it increases efficiency at exit from impeller. Diffuser is a ring with blades and not economical for single stage pump.
Volute is of spiral type in which area of flow increase gradually.
Both of these convert the velocity head into pressure head by increasing the area of flow.
When do we use vertical and horizontal centrifugal pumps?
What is priming?
A well phrased question has answers in itself!!!
What type of blade gives maximum efficiency? Bent backward
If the liquid is changed from kerosene to gasoline, will there be any change in pump head?
Head is not related to specific gravity hence no change. Pressure depends upon density.
What is the position of delivery valve when centrifugal pump starts? Fully closed.
What is rejection criteria as per API 610?
What range of pressures are handled by Centrifugal pump?
What is the maximum viscosity CP can handle?—3300Cp
What is the limit for NSS?
What is signification of NS?
What is difference between OH & BB pump?
What are the measures to increase NPSHA and decrease NPSHr?
What are affinity laws?
Why is vapor pressure significant in seal selection?
How is stuffing box pressure arrive for OH, BB & VS?
What is the instrument in seal plan?
How mechanical seal is classified (type, arrangement and category)
When torsional & lateral analysis is performed?
What to check in GA of pump?
Why the nozzle load is 2X API values preferred?
What are the 6 points performance test is performed?
What is MAWP?
What is system curve, why it is not started from zero?
What is Euler’s equation?
What is vibration limit for API 610?
When a hydrodynamic bearing is considered?
What is the preferred and allowable operating range?
What is the minimum bearing life?
What is the published efficiency and rated efficiency?
What is the limit of axial split pump as per API 610?
What is single and double volute? How is casing classified in centrifugal pump?
What margin is applied on motor for CP?
When motor is designed for EOC operation?
What NDT procedures are applied to centrifugal pump?
What is the MOC of mechanical seal?
What is the effect on motor while doing a job for gulf region?
What is the temperature at which forced bearing cooling is applied for bearing? Process temp > 205 C ambient above 55C
Why dummy stage is employed in a multi-stage pump? For possibility of pressure increase in future.
Why diffuser and volute casing is employed?
Diffuser is used in multi-stage pump as it increases efficiency at exit from impeller. Diffuser is a ring with blades and not economical for single stage pump.
Volute is of spiral type in which area of flow increase gradually.
Both of these convert the velocity head into pressure head by increasing the area of flow.
When do we use vertical and horizontal centrifugal pumps?
What is priming?
A well phrased question has answers in itself!!!
