Deck 2: Energy Generation and Fuel Handling in Power Plants

Question 1

How much coal is required to generate energy equivalent to the energy generated by 1 kg of uranium?

A)30000 tonnes of high grade coal
B)300 tonnes of high grade coal
C)10000 tonnes of high grade coal
D)3000 tonnes of high grade coal

Answer 1

3000 tonnes of high grade coal

Question 2

Nuclear fuel in reactor lasts for

A)more than 5 months
B)few weeks
C)few days
D)more than 5 years

Answer 2

more than 5 years

Question 3

Cost of nuclear fuel in nuclear power plant economics is considered as  

A)running cost
B)maintenance cost
C)capital cost
D)development cost

Answer 3

capital cost

Question 4

Which of the following are not taken as operation and maintenance cost in economics of nuclear power plant?

A)taxes and insurance
B)salaries and wages of staff
C)cost of waste disposal
D)cost of processing materials

Question 5

What is the overall efficiency of nuclear power plant?

A)20 to 25%
B)25 to 30%
C)30 to 40 %
D)50 to 70 %

Question 6

The land area required for installation of nuclear power plant is  

A)more than thermal power plant
B)less than thermal power plant
C)equel to thermal power plant
D)depends on type of construction

Question 7

All of the nuclear fuel reserve will be ended in about 400 years.

Question 8

With respect to the load centre which location is suitable for stablishment of nuclear power plant?

A)load centre
B)near load centre but at reasonable distance
C)far away from load centre
D)near chemical industries

Question 9

Operating cost of nuclear power plant is less than thermal power plant.

Question 10

What is the role of breaker house in coal feeding?

A)to break the coal into smaller pieces
B)to separate different sizes of coal
C)to separate the light dust from the coal
D)to powder the coal

Question 11

Large amount of coal is transported by

A)railway
B)sea or river ways
C)road transportation
D)by airlifting

Question 12

The coal is fed to the furnace through

A)conveyor belt
B)wagon tipper
C)hopper
D)crane

Question 13

What is the function of cyclone separators in pneumatic ash handling system?

A)to separate the lighter dust particles
B)to force up the movement of ash through pipes or tubes
C)to draw out the dust from furnace
D)to separate minute coal particles

Question 14

Which medium is used to carry ash in the pneumatic ash handling system?

A)conveyor belt
B)water trough
C)air
D)chain belt

Question 15

Which system is noisy out of all the following ash handling systems?

A)steam jet ash handling system
B)mechanical ash handling system
C)pneumatic ash handling system
D)hydraulic ash handling system

Question 16

Which medium is used to carry ash in hydraulic system?

A)air
B)water
C)steam
D)conveyor

Question 17

What would be the amount of distance that a low pressure system could carry the ash?

A)25m
B)500m
C)150m
D)800m

Question 18

What is the capacity of low pressure hydraulic ash handling system?

A)80 tonnes/hour
B)22 tonnes/hour
C)50 tonnes/hour
D)10 tonnes/hour

Question 19

Which of these terms defines the pressure difference in the furnace?

A)draught
B)duct
C)stack
D)chimney

Question 20

The DRAUGHT SYSTEM or pressure difference for a chimney of height of H metres is given by?

A)?p = gh(?a-?g)
B)?p = gh(?g-?a)
C)?p = gh?g
D)?p = gh(?a+?g)

Question 21

Which of these is not a type of mechanical draft system for a furnace?

A)balanced draft
B)induced draft
C)forced draft
D)actuated draft

Question 22

Stack heat losses can be minimised by

A)using low c.v. fuels
B)controlling the excess air
C)oxygen enrichment of combustion air
D)maintaining proper draft in the furnace

Question 23

Which of these accentuates clinkering trouble on furnace grate burning coal?

A)low reactivity of carbonised residue containing high proportions of iron and sulphur
B)low forced draught and low fuel bed temperature
C)thick fire bed and preheated primary air
D)all of the mentioned

Question 24

In a furnace employing forced draught compared to induced draught  

A)the fan operates hot and hence blades are liable to corrosion and erosion
B)positive pressure exists in the furnace
C)air is sucked in, so air leaks are more and hence furnace efficiency is reduced
D)none of the mentioned

Question 25

Which of the following types of the fans has the highest cost?

A)centrifugal fans
B)axial fans
C)primary fans
D)gas recirculation fans

Question 26

Which of these is not a type of drive of variable speed control?

A)variable speed turbine
B)hydraulic coupling
C)multiple speed ac motor
D)electronically adjustable turbine drive

Question 27

Feed water for boiler of thermal power plant is obtained from:

A)natural sources like river and lake
B)partly from condensed steam and natural sources
C)condensed steam and small percentage from natural resources
D)natural sources and small percentage from condensed steam

Question 28

Mechanical method of water treatment is done to  

A)heat the feed water
B)to remove solid matter and impurities
C)to add some solid materials
D)to remove dissolved gases

Question 29

Which method is used in large modern thermal power plants to heat feed water?

A)open type heatre is used
B)close type heater is used
C)steam is directly taken from main turbine and used to heat it feed water
D)surface type heater is used

Question 30

Thermal treatment methods used to remove impurities like:

A)dissolved carbon dioxide and other gases
B)solid materials
C)carbonate
D)bacterial impurities

Question 31

Chemical method of treatment is used for treatment of:

A)diissolve gases
B)carbonate and carbon dioxide
C)bacterial impurities
D)send and suspended materials