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WorksheetsFUNDAMENTALS OF POWER PLANT ENGINEERING DESIGN
Total questions: 52
Worksheet time: 1hrs 11mins
Explain the difference between open cycle and close cycle gas turbine?
What is intercooling in gas turbine?
Site (3) application of geothermal energy.
Sketch a Plant Layout of Gas Turbine Power Plant
Site (3) difference between gasoline and diesel engine.
Enumerate (4) Advantage of Solar Power Plant
Enumerate (4) Disadvantages of Wind Power Plant
Enumerate (4) Consideration for Site selection for Hydroelectric Power Plant
Enumerate (4) types of solar power plant
Enumerate (3) Hydroelectric Turbine, mention it’s application.
When interconnected power system operate with tie-lines bias, they will respond to?
a. Frequency changes only
b. Both frequency and tie-lines load changes
c. Tie-line-load changes only
d. None of these
The specific speed of a hydro turbine depends on?
a. Actual speed
b. Head of operation
c. Output power
d. Actual speed, head of operation & output power
From the economic point of view, a power system should have a load factor?
a. About 0.12
b. About 0.5
c. About1
d. zero
Compared to turbines in the conventional coal-fired thermal stations, nuclear power plant turbines use steam at?
a. higher pressure & temperature
b. lower pressure & temperature
c. higher temperature & lower pressure
d. higher power factor
The role of the economizer is to pre-heat?
a. Pulverized coal
b. Boiler feed water
c. Air used for combustion
d. provide clean air
From the economic point of view, a power system should have a diversity factor?
a. Much less than 1
b. Nearly equal to but less than one
c. Always constant
d. Greater than once
Disconnecting switch is provided for proper protection of electric substations and power plant. What is its main function?
a. for protection of circuit breaker
b. to break the system under fault
c. for complete isolation
d. for maintenance purpose
Superheater & reheater are used to?
a. improve the condition of steam
b. heat air used for combustion
c. heat boiler feed water
d. decrease efluent
The size and weight per unit power of a fast breeder reactor in comparison to a reactor of any of the thermal types is?
a. Much less
b. Much more
c. more or less the same
d. always zero
Governor is used with the steam turbine to regulate?
a. Steam temperature
b. Steam pressure
c. Power output
d. Speed
The most common type of hydro turbine with a moderate value of the specific speed is?
a. Pelton
b. Francis
c. Kaplan
d. wind
Cooling of 500 MW turbo-generators is usually done by the following coolants?
a. Nitrogen & hydrogen
b. Hydrogen & water
c. Carbon dioxide & hydrogen
d. Water only
Pumped storage hydroelectric plant can be operated with?
a. Upstream reservoir only
b. downstream reservoir only
c. a and b
d. None of these
Which alternator usually runs at slow speed as compared to others?
a. coupled to gas turbine
b. coupled to steam turbine
c. coupled to hydraulic turbine
d. coupled to diesel engine
Which type of plant has the least running cost per kWh of energy generated?
a. Hydro-electric plant
b. Thermal power plant
c. Nuclear power plant
d. Diesel power plant
Which of the following generating stations has the minimum running cost?
a. Hydro-electric station
b. Nuclear power station
c. Thermal power station
d. Diesel power plant
If the load of an isolated generator is increased without increasing the power input to the prime mover:
a. The generator will slow down.
b. The generator will speed up.
c. The generator voltage will increase.
d. The generator field current will increase.
What do you call the protective angle between the Overhead ground wire and the power cable in the Transmission tower?
a. surge angle
b. clearing angle
c. shielding angle
d. arcing angle
When alternative sources of energy are available to a power system, they should be used in such a way that:
a. Thermal generation is held at a minimum.
b. The most efficient plants are always loaded to their maximum
c. Overall production cost is minimized.
d. Near at the load point
Peak load hydro power plants compared to base load thermal plants have plant capacity factor?
a. Much lower
b. Much higher
c. Almost equal
d. Always constant
In a thermal-electric generating plant, overall efficiency is improved when:
a. Boiler pressure is increase.
b. The difference between initial pressure and temperature and exhaust pressure and temperature are held at a maximum.
c. Load on the units is increased.
d. It is always loaded
The highest magnitude of fault current will determine the size of magnitude will determine the size of?
a. circuit breaker, relay
b. circuit breaker, isolator
c. fuse, relay
d. relay, circuit breaker
The commercial sources of energy are
solar, wind and biomass
fossil fuels, hydropower and nuclear energy
wood, animal wastes and agriculture wastes
none of the above
In regenerative cycle feed water is heated by
exhaust gases
heaters
draining steam from the turbine
all above
Economiser is used to heat
air
feed water
flue gases
all above
Bucket elevators are used for
carrying coal in horizontal direction
carrying coal in vertical direction
carrying coal in any direction
When steam or water is used to run a turbine, it can generate __________________.
Electricity
Oil
Geothermal Energy
Uranium
All of the following are renewable except
Uranium
Solar
Hydropower
Food Crops (Biomass)
Intial cost of thermal power plant is __________ than nuclear power plant
Higher
lower
more
none
Solid fuel used in ______________ power plants
Thermal
Hydro
Diesel
gas turbine power plant
Water tubes in vertical boiler are __________
horizontal
vertical
inclined
none
1. Which of the following is a non-renewable resource?
coal
Forests
Water
Wildlife
Load factor during a period is
Average Load / Installed Capacity
Average Load / Maximum Load
Maximum Load / Average Load
Maximum Load / Installed Capacity
Which of the following is an essential requirement for a peak load plant
Capability of working continuously
Low operating cost
Capability of quick start
Economical and speedy repair
Which of the following is not suitable to uses as peak plant?
Hydroelectric power plant
Gas power plant
Diesel elected plant
Nuclear power plant
Annual depreciation cost calculated by
(a) sinking fund method
(b) straight method
(c) Both a & b
(d) estimates values
Annual depreciation as per straight line method, is calculated by
The capital cost divided by number of years of life
The capital cost minus the salvage value, is divided by the number Years of life
Investing a uniform sum of money per annum at stipulated rate of interest.
None
Most widely used material of solar cell is
arsenic
cadmium
silicon
steel
The capital cost of generating equipment, transmission system and distribution system comes under
Fixed capital
Running capital
Both fixed and running capital
None
How much coal is required to generate energy equivalent to the energy generated by 1 kg of uranium?
30000 tonnes of high grade coal
300 tonnes of high grade coal
10000 tonnes of high grade coal
3000 tonnes of high grade coal
The nuclear energy is measured as
kWhr
curie
MW
MeV
Rankine cycle efficiency of a good steam power plant may be in the range of
15 to 20%
35 to 45%
70 to 80%
90 to 95%
