WorksheetsOBT III FM & FM SY (B) AY 22-23
Total questions: 23
Worksheet time: 12mins
Centrifugal pump is a_________
Turbomachinery
Flow regulating device
Drafting device
Intercooling device
Turbomachines work under ______
Newtons first law
Newtons second law
Newtons third law
Kepler’s law
The main function of nozzle is to __________
Varying temperatures
Pressure variations
Load variations
Heat variations
The main function of centrifugal pumps are to ________
Transfer speed
Transfer pressure
Transfer temperature
Transfer energy
Centrifugal pumps transfer energy from _______
Rotor to fluid
Fluid to rotor
Draft to rotor
Rotor to draft
Which among the following control the flow rate?
Valve
Pump
Head
Tank pipe
The inlet passage of water entry is controlled by ________
Head race
Gate
Tail race
Pump
Centrifugal pumps are used to transport ________
Pressure
Speed
Power
Fluid
Centrifugal pumps transport fluids by converting _________
Kinetic energy to hydrodynamic energy
Hydrodynamic energy to kinetic energy
Mechanical energy to kinetic energy
Mechanical energy to Hydrodynamic energy
What is the type of turbine ?
Kaplan
Francis
Pelton wheel
What is the type of turbine ?
Kaplan
Francis
Pelton wheel
What is the type of turbine ?
Kaplan
Pelton wheel
Francis
Which draft tube reduces the whirling action of water?
Simple Elbow Draft Tube.
Elbow with varying cross section
Moody Spreading Draft Tube.
Diffuser or Divergent Draft Tube.
Which draft tube is used for Low head ?
Elbow with varying cross section.
Simple Elbow Draft Tube
Moody Spreading Draft Tube
Conical Diffuser or Divergent Draft Tube
_____________ is defined as ratio between power delivered to runner and power supplied at inlet of turbine.
Mechanical efficiency
Volumetric efficiency
Hydraulic efficiency
Overall efficiency
The ratio of power at the shaft of turbine and power delivered by water to runner is known as?
Mechanical efficiency
Volumetric efficiency
Hydraulic efficiency
Overall efficiency
The product of mechanical efficiency and hydraulic efficiency is known as?
Mechanical efficiency
Volumetric efficiency
Hydraulic efficiency
Overall efficiency
_____________ is ratio of volume of water actually striking the runner and volume of water supplied to turbine?
Mechanical efficiency
Volumetric efficiency
Hydraulic efficiency
Overall efficiency
What is the full form of NPSH in a pump?
Net pressure suction head
Net positive suction head
Non-pressure suction head
Net pressure super head
When a pump casing is filled with liquid before it is started, it is called as------------
Efficiency of pump
Priming
Suction head
Net positive suction head
Roll Number :
Name :
1 Metric HP (Tractor HP) is equal to ____ watts
240
540
735
846
