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WorksheetsPPS NG BABYCAKES KOH
Total questions: 74
Worksheet time: 38mins
It refers to one consisting of two or more pressure stages, pressure stage consists of a nozzle or diaphragm block and one row of moving impulse blades?
Pressure-Compounded Impulse Turbine
Velocity Compounding
Impulse Turbine Blading
Reaction Turbine Blading
Which of the following are NOT included in pressure compounding with the comparison from the velocity compounding?
Equal velocity drop for each stage
Not equal pressure drop per stage
Equal power per stage
No problem with steam leak
If the pressure drops take place in the nozzles, which are located in a nozzle or diaphragm block ahead of the row of blades, it is being called?
Pressure-Compounded Impulse Turbine
Velocity Compounding
Reaction Turbine Blading
Impulse Turbine Blading
Which of the following are shaped in such a way that the space through which the steam passes is smaller than that through which steam enters?
Impulse blades
Reaction turbine
Impulse turbine
Reaction blades
It refers to a steam is supplied to a set of fixed nozzles wherein the steam pressure falls and gains in velocity?
Impulse blades
Reaction turbine
Reaction blades
Impulse turbine
It refers to the blades shaped that the entrance to a row of blades is of the same approximate size and shape as the exit from the row of blades?
Reaction turbine
Impulse turbine
Impulse blades
Reaction blades
It refers to a steam passes through the fixed blading and gains in velocity, it then impinges upon the moving blades to give an impulsive effect?
Impulse blades
Reaction turbine
Impulse turbine
Reaction blades
What is the basic principle behind the operation of a steam turbine?
Water injection
Fuel combustion
Steam condensation
Steam expansion
Which type of steam turbine is commonly used for low to medium power applications due to its simplicity and cost-effectiveness?
Impulse turbine
Radial-flow turbine
Reaction turbine
Axial-flow turbine
Which type of steam turbine is characterized by a single set of stationary nozzles and moving blades?
Impulse turbine
Reaction turbine
Axial-flow turbine
Radial-flow turbine
What is the primary function of the blades in a steam turbine?
Control steam temperature
Convert heat to mechanical energy
Generate steam
Condense steam
Which of the following types of seal consist of annular rings machined on the shaft which ride in projections of the labyrinth packing strip?
Carbon glands
Water seal
Double-labyrinth packing
Labyrinth seal
It refers to permit axial adjustment of the turbine rotor of the steam turbine engine?
Bearing case
Oil ring
Thrust bearing
Sealing ring
Which of the following type of coupling couplings consist of a flange provided with external claws running parallel to the shaft to which it is secured?
Pin type coupling
Claw type coupling
Flexible coupling
Rubber bushing
Which of the following a steel band fitted at the outer circumference of the blades for the following purposes to reinforce the entire blading assembly?
Lacing wire
Locking ring
Shroud ring
Wire ring
Which of the following is contains the turbine and protect the device component from external influence and damage and it may also support the bearings on which the shafts rest to provide rigidity to the shaft?
Casing
Casting
Packing
Glands
If this wire is passed through the mating hole in the blading about its mid length and crimped at each end, it is being called?
Shroud ring
Lacing wire
Locking ring
Wire ring
It refers to have two spur gears on flanges mounted on each shaft. Teeth on these gears are continually in mesh with corresponding internal gears machined on a sleeve?
Claw type coupling
Flexible coupling
Gear type coupling
Pin type coupling
It refers to a devices used in maneuvering or for minor changes in speed, varies the steam chest pressure for controlling the speeds of turbine?
By-pass
Nozzle control valves
Speed regulating governor
Throttle valve
It refers to a ring or series of ring fitted in a turbine shaft at high pressure end, the purpose of the dummy piston is to prevent the rotor from shifting longitudinally?
Dummy piston
Lacing wire
Shroud ring
Truck piston
It refers to the power transmitting device and is used to transmit the rotational movement of the blades connected to it at one end via the rotor to the coupling?
Blades
Shafts
Nozzle
Casing
It refers to be used to connect turbine and driven shafts for the following reasons to allow for differences in expansion?
Claw type coupling
Flexible coupling
Pin type coupling
Rubber bushing
Which of the following type consist of a number of coupling bolts secured to one half of the coupling; these bolts pass through rubber or leather bushing secured to the other half of the coupling?
Claw type coupling
Flexible coupling
Pin type coupling
Rubber bushing
Which of the following device used to minimize leakage of steam through the clearance provided between moving and stationary parts of turbine?
Turbine blade
Turbine gland
Turbine shaft
Turbine rotor
It refers to attached into the wheel of the shaft or to the enlarge portion of the shaft called drum?
Impulse blades
Moving blades
Stationary blades
Reaction blades
Which of the following are designs in such a way as to produce maximum rotational energy by directing the flow of the steam along its surface?
Blades
Nozzle
Casing
Shafts
Which of the following are frequently used to seal the diaphragms of an impulse turbine from the shaft, in which case they consist of only one ring?
Carbon glands
Double-labyrinth packing
Labyrinth seal
Water seal
It refers to main components of rankine cycle that supplied high pressure of feed water into the boiler for generation?
Condenser
Boiler
Feed pump
Turbine
It refer to the enthalpy of wet steam at given pressure or temperature in rankine cycle?
Wp
H4
H3
Wt
Which of the following main components of the rankine cycle store exhaust steam from the expansion system of the turbine?
Condenser
Boiler
Feed pump
Turbine
If the difference between the enthalpy of superheated vapor at given pressure and temperature minus the enthalpy of saturated wet steam at given pressure or temperature, it being called
Output efficiency work
Output pump work
Output thermal work
Output turbine work
It refers to the entropy of saturated liquid at .010 Mpa from table 2?
Sfg
Sf
Wt
X4
If the ratio of the difference between the turbine work out put and the pump work divided by the heat added, it is being called?
Cycle efficiency
Output efficiency
Rankine efficiency
Thermal efficiency
Which of the following process if the high pressure liquid enters a boiler where it is heated at constant pressure by an external heat source to become a dry saturated vapour?
Process 1-2
Process 2-3
Process 3-4
Process 4-1
If the ratio of the difference between the turbine work out put and the pump work divided by the heat added, it is being called?
Cycle efficiency
Thermal efficiency
Output efficiency
Rankine efficiency
Which of the following process if the wet vapours enter a condenser where it is condensed at a constant pressure to become a saturated liquid?
Process 1-2
Process 2-3
Process 3-4
Process 4-1
It refers to a enthalpy of superheated vapor at given pressure or temperature of rankine cycle?
h3
H4
Wt
Wp
Which of the following refers to a cycle is an idealized thermodynamic cycle of a heat engine that converts heat into mechanical work?
Steam cycle
Working fluid cycle
Efficiency cycle
Rankine cycle
It refers to an intricate array of alternate stationary and rotating aero foil-section blades?
The axial compressor
The compressor
The turbine
The combustion system
Which of the typically made up of a ring of fuel injectors that inject a steady stream of fuel into combustion chambers where it mixes with the air?
The axial compressor
The compressor
The combustion system
The turbine
It refers to draws air into the engine, pressurizes it, and feeds it to the combustion chamber at speeds of hundreds of miles per hour?
The compressor
The axial compressor
The combustion system
The turbine
Which of the following device or machine used to convert superheated steam to de-superheated mounted on rankine cycle process?
Steam boiler
Heat engine
Turbine engine
Steam turbine
Which of the following components used into energy of steam and convert into electrical energy?
Turbine
Feed pump
Boiler
Condenser
Which of the following refer to work out of the pump express the unit of kj/kg?
Wt
H4
Wp
H3
If the ratio of the difference between the turbine work out put and the pump work divided by the heat added, it is being called?
Cycle efficiency
Output efficiency
Rankine efficiency
Thermal efficiency
It refers to a machine or equipment used to convert low pressure of fresh water to high pressure and supplies to the boiler in rankine cycle process?
Feed pump
Turbine
Condenser
Steam boiler
If the working fluid is pumped from low to high pressure. As the fluid is a liquid at this stage the pump requires little input energy, it refers to?
Process 1-2
Process 2-3
Process 3-4
Process 4-1
It refers to work output of turbine express in unit of kj/kg in rankine cycle?
H3
H4
Wt
Wp
Which of the following type of bearing is similar to shaft bearings used on reciprocating engines, are used only on small turbines?
Plain bearing
Journal bearing
Thrust bearing
Shaft radial bearing
Which of the following is consists of the turbine shaft and the attached moving blade and the absorb energy from working fluid (steam, gas, water etc) and converts that energy into mechanical energy?
Blades assembly
Casing assembly
Shaft assembly
Rotor assembly
Which of the following type of bearing must absorb a much greater amount of end thrust?
Plain bearing
Thrust bearing
Shaft radial bearing
Journal bearing
It refers to a type of seal that consist of a centrifugal pump runner secured to the turbine shaft and rotating in a chamber which is machined into the turbine casing?
Carbon glands
Double-labyrinth packing
Labyrinth seal
Water seal
Which of the following where the blades are shaped in such a way that the space through which the steam passes is smaller than that through which steam enters?
Pressure-Compounded Impulse Turbine
Velocity Compounding
Impulse Turbine Blading
Reaction Turbine Blading
What effect does an increase in steam pressure have on the efficiency of a steam turbine?
Increases efficiency
Decreases efficiency
No impact on efficiency
Depends on the blade design
Which of the following device use to prevent leakage of high-pressure steam to the atmosphere and of air, into the low pressure side?
Steam seal
Turbine gland
Steam casing
Thrush bearing
If the alternate row of fixed and moving blades attached to the casing and the rotor respectively, form passageways which serve fixed and free nozzle, these being called?
Impulse blades
Impulse turbine
Reaction blades
Reaction turbine
It refers to a term applied only to impulse turbines which the stage is consists of two or more rows of moving impulse blades separated by rows of stationary blades?
Impulse Turbine Blading
Pressure-Compounded Impulse Turbine
Reaction Turbine Blading
Velocity Compounding
Which of the following blades are secured to the casing; the moving blades, to a wheel; and a bank of nozzles directs steam against the first row of moving blades?
Impulse blades
Moving blades
Reaction blades
Stationary blades
Which of the following types of engine in which the mechanical device extracts thermal energy from pressurized steam, and converts it into rotary motion?
Gas Steam turbine
Reciprocating steam engine
Steam turbine
Steam engine
Which of the following listed below is NOT included for the disadvantages of a turbine?
There are fewer moving and contact friction parts
Low starting power
Not directly reversible, astern turbine required
Manoeuvring can be slightly sluggish
If the pressure drops take place in the nozzles, which are located in a nozzle or diaphragm block ahead of the row of blades, it is being called?
Impulse Turbine Blading
Reaction Turbine Blading
Pressure-Compounded Impulse Turbine
Velocity Compounding
It refers to a steam is supplied to a set of fixed nozzles wherein the steam pressure falls and gains in velocity?
Impulse blades
Reaction turbine
Impulse turbine
Reaction blades
Which of the following is NOT belongs on velocity compounding with the comparison into the pressure compounding?
Not equal power per stage
Not recommended for more than two stages
Not equal pressure drop per stage
Not equal velocity drop for each stage
It refers to the dry saturated vapor expands through a turbine, generating power. This decreases the temperature and pressure of the vapour?
Process 2-3
Process 4-1
Process 1-2
Process 3-4
If the ratio of the difference between the turbine work out put and the pump work divided by the heat added, it is being called?
Rankine efficiency
Cycle efficiency
Output efficiency
Thermal efficiency
It refers to a machine or equipment used to convert low pressure of fresh water to high pressure and supplies to the boiler in rankine cycle process?
Steam boiler
Condenser
Turbine
Feed pump
It refers to the entropy of saturated liquid at .010 Mpa from table 2?
Sf
Wt
Sfg
X4
If the working fluid is pumped from low to high pressure. As the fluid is a liquid at this stage the pump requires little input energy, it refers to?
Process 1-2
Process 2-3
Process 3-4
Process 4-1
Which of the following main components of the rankine cycle store exhaust steam from the expansion system of the turbine?
Condenser
Boiler
Feed pump
Turbine
It refer to the enthalpy of wet steam at given pressure or temperature in rankine cycle?
H3
Wp
Wt
H4
It refers to main components of rankine cycle that supplied high pressure of feed water into the boiler for generation?
Boiler
Feed pump
Condenser
Turbine
anong pangalan ng kabit ni sir?
(a)
It refers to work output of turbine express in unit of kj/kg in rankine cycle?
H3
H4
Wt
Wp
Which of the following process if the high pressure liquid enters a boiler where it is heated at constant pressure by an external heat source to become a dry saturated vapour?
Process 1-2
Process 3-4
Process 2-3
Process 4-1
