Impulse turbine and reaction turbine are classified based on?
1.Type of energy at inlet
2.Direction of flow through runner
3.Head at inlet of turbine
4.Specific speed of turbine
In reaction turbine hydraulic efficiency is______________
1.Ratio of actual work at the turbine to the energy imparted to the wheel
2.Ratio of work done on the wheel to energy that is supplied to the turbine
3.Ratio of power produced by the turbine to the energy actually supplied by the turbine
4.Ratio of Work done on the wheel to the energy (or head of water) actually supplied to the turbine
A hydraulic coupling belongs to the category of________
1.Energy absorbing machines
2.Energy generating machines
3.Power absorbing machines
4. Energy transfer machines
Among the following which turbine has highest efficiency?
1.Kaplan turbine
2.Francis turbine
3.Pelton turbine
4.Propeller turbine
At present which is cheapest means of generating power_____________
1.Thermal power
2.Nuclear power
3.Hydroelectric power
4.Electric Power
Buckets and blades used in a turbine are used to:
1.Alter the direction of water
2.Switch off the turbine
3.To regulate the wind speed
4.To regenerate the power
Consider an inward flow reaction turbine, here, water _______
1.Flows parallel to the axis of the wheel
2.Enters the wheel at the outer periphery and then flows towards the centre of the wheel
3.Flow is partly radial and partly axial
4.Enters at the centre of the wheel and then flows towards the outer periphery of the wheel
Francis and Kaplan turbines are known as _______
1.Impulse turbine
2.Reaction turbine
3. Axial flow turbine
4.Mixed flow turbine
High head, low head and medium head turbines are classified based on ____________
1.Type of energy at inlet
2.Direction of flow through runner
3.Head at inlet of turbine
4.Specific speed of turbine
High specific speed of turbine implies that it is ___________
1.Francis turbine
2.Propeller turbine
3.Pelton turbine
4.Kaplan turbine
How many types of Reaction turbines are there?
1.5
2.4
3.3
4.9
How many types of turbines can you classify on the basis of direction of flow through runner?
1.6
2.3
3. 4
4.7
Hydraulic energy is converted into another form of energy by hydraulic machines. What form of energy is that?
1.Mechanical Energy
2.Electrical Energy
3.Nuclear Energy
4.Elastic Energy
Hydraulic Machines fall under the category :
1.Pulverizers
2. Kinetic machinery
3.Condensers
4. Roto-dynamic machinery
Hydraulic turbines are classified based on ____________
1.Energy available at inlet of turbine
2.Direction of flow through vanes
3.Head at inlet of turbine
4.Energy available, Direction of flow, Head at inlet.
If energy available at inlet of turbine is only kinetic energy then it is classified based on ____________
1.Type of energy at inlet
2.Direction of flow through runner
3.Head at inlet of turbine
4.Specific speed of turbine
If water flows in radial direction at inlet of runner and leaves axially at outlet then turbine is named as ____________
1.Tangential flow turbine
2.Axial flow turbine
3.Radial flow turbine
4.Mixed flow turbine
Impulse turbine is generally fitted at ______________
1.At the level of tail race
2.Above the tail race
3.Below the tail race
4.About 2.5mts above tail race to avoid cavitations.
In a reaction turbine, the draft tube is used to _________
1.To increase the head of water by an amount that is equal to the height of the runner outlet above the tail race
2.To prevent air to enter the turbine
3.To increase pressure energy of water
4.To transport water to downstream
IN what type of turbine water enters in radial direction and leaves axial direction?
1.Tangential flow turbine
2.Axial flow turbine
3.Outward flow turbine
4.Mixed flow turbine
Into how many types can you classify radial flow turbines?
1. 4
2.3
3. 6
4.2
Into how many types can you classify turbines on basis of head at inlet?
1.3
2.4
3.6
4.5
Kaplan turbine is operated under __________
1.Low head and high discharge
2.High head and low discharge
3.Medium head and high discharge
4.Medium head and medium discharge
Low specific speed, high specific speed and medium specific speed are classified based on ____________
1.Type of energy at inlet
2.Direction of flow through runner
3.Head at inlet of turbine
4.Specific speed of turbine
Maximum Number of jets, generally, employed in an impulse turbine without jet interference can be?
1.2
2.3
3.4
4.6
Medium specific speed of turbine implies _____________
1.Pelton turbine
2.Kaplan turbine
3.Francis turbine
4.Propeller turbine
Pelton turbine is operated under_________
1.Low head and high discharge
2.High head and low discharge
3.Medium head and high discharge
4.Medium head and medium discharge
Pen stocks are made up of _____________
1.Steel
2.Cast iron
3.Mild steel
4.Wrought iron
Pipes of largest diameter which carry water from reservoir to the turbines is known as_____________
1.Head stock
2.Tail race
3.Tail stock
4.Pen stock
Specific speed of reaction turbine is between?
1.5 and 50
2.10 and 100
3.100 and 150
4. 150 and 300
Tangential flow, axial flow, radial flow turbines are classified based on?
1.Type of energy at inlet
2.Direction of flow through runner
3.Head at inlet of turbine
4.Specific speed of turbine
The electric power which is obtained from hydraulic energy____________
1.Thermal power
2.Mechanical power
3.Solar power
4.Hydroelectric power
The important type of axial flow reaction turbines are ______________
1.Propeller and Pelton turbines
2.Kaplan and Francis turbines
3.Propeller and Francis turbines
4.Propeller and Kaplan turbines
The overall efficiency of a reaction turbine is the ratio of
1.Actual work available at the turbine to the energy imparted to the wheel
2.Work done on the wheel to the energy (or head of water) actually supplied to the turbine
3.Power produced by the turbine to the energy actually supplied by the turbine
4.Actual work available at the turbine to energy imparted to the wheel
The product of mechanical efficiency and hydraulic efficiency is known as?
1.Mechanical efficiency
2.Volumetric efficiency
3.Hydraulic efficiency
4.Overall efficiency
The ratio of power at the shaft of turbine and power delivered by water to runner is known as?
1.Mechanical efficiency
2.Volumetric efficiency
3.Hydraulic efficiency
4.Overall efficiency
The working of which of the following hydraulic units is based on Pascal’s law?
1.Air lift pump
2.Hydraulic coupling
3.Hydraulic press
4. Jet pump
Which among the following which is not an efficiency of turbine?
1.Mechanical efficiency
2.Volumetric efficiency
3.Hydraulic efficiency
4.Electrical efficiency
Which energy generated in a turbine is used to run electric power generator linked to the turbine shaft?
1.Mechanical Energy
2.Potential Energy
3.Elastic Energy
4.Kinetic Energy
Which kind of turbine is a Fourneyron Turbine?
1.Inward flow turbine
2.Outward flow turbine
3.Mixed flow turbine
4.Radial flow turbine
Which kind of turbine is a Pelton Wheel turbine?
1.Tangential flow turbine
2.Radial flow turbine
3.Outward flow turbine
4.Inward flow turbine
Which kind of turbines changes the pressure of the water entered through it?
1.Reaction turbines
2.Impulse turbines
3.Reactive turbines
4. Kinetic turbines
Which principle is used in Hydraulic Turbines?
1.Faraday law
2.Newton’s second law
3.Charles law
4.Braggs law
Which type of turbine is a Francis Turbine?
1.Impulse Turbine
2.Screw Turbine
3.Reaction turbine
4. Turgo turbine
Which type of turbine is used to change the velocity of the water through its flow?
1.Kinetic turbines
2.Axial flow turbines
3.Impulse turbines
4.Reaction turbines
____________ is an inward radial flow reaction turbine.
1.Pelton turbine
2. Kaplan turbine
3.Francis turbine
4.Propeller turbine
_____________ is defined as ratio between power delivered to runner and power supplied at inlet of turbine.
1.Mechanical efficiency
2.Volumetric efficiency
3.Hydraulic efficiency
4.Overall efficiency
_____________ is ratio of volume of water actually striking the runner and volume of water supplied to turbine.
1.Mechanical efficiency
2.Volumetric efficiency
3.Hydraulic efficiency
4.Overall efficiency
______________ is a axial flow reaction turbines, if vanes are fixed to hub of turbine.
1.Propeller turbine
2.Francis turbine
3.Kaplan turbine
4.Pelton turbine
_______________is the electric power obtained from the energy of the water.
1.Roto dynamic power
2. Thermal power
3.Nuclear power
4.Hydroelectric power