Deck 7: Energy Generation and Technology: Nuclear Power Economics, and Power Plant Efficiency

Question 1

Which are the major types of boilers that are operated in world today?

A)natural circulation boiler
B)forced circulation boiler
C)fire tube boiler
D)once through boiler

Answer 1

once through boiler

Question 2

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 2

capital cost

Question 3

In economics of nuclear power plant taxes and insurance charges are taken as                

A)operating cost
B)maintenance cost
C)capital cost
D)fixed cost

Answer 3

fixed cost

Question 4

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 5

5 FUEL AND ASH HANDLING

A)coal ash produced destroys the machinery by entering into them
B)coal ash produced annually accounts for thousands of tones
C)coal ash can be reutilized for some other purpose
D)coal ash affects the health of people working at plants

Question 6

Which system consumes less power out of all ash handling systems?

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

Question 7

Natural draught produced by a chimney depends upon ______

A)density of chimney gases
B)height of chimney
C)both 'density of chimney gases' and 'height of chimney'
D)none of the mentioned

Question 8

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 9

Which of the following is not a reason of heating feed water?

A)it improves overall efficiency
B)it removes dissolved impurities
C)it prevents from thermal stress which may cause due to enter of cold water into boiler
D)it produces steam from feed water

Question 10

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 11

Heat treatment arrangement used to separate or remove deserved gases and impurities from feed water is called the year later.

Question 12

Having two separate units for process heat and power is?

A)useful
B)useless
C)pollution reducing
D)none of the mentioned

Question 13

In a back pressure turbine ______      

A)pressure at the exhaust from the turbine is the saturation pressure corresponding to the temperature desired in the process
B)pressure at the entrance of the turbine is the saturation pressure corresponding to the temperature desired in the process
C)pressure at the exhaust from the turbine is the saturation pressure corresponding to the pressure desired in the process
D)none of the mentioned

Question 14

The cogeneration plant efficiency n_COif W_T, Q_i, Q_H represents turbine work, heat input, heat output respectively is given by?

A)n_CO= (W_T + Q_i) / Q_H.
B)n_CO= (W_T - Q_i) / Q_H
C)n_CO= (W_T + Q_H) / Q_i
D)n_CO= (W_T + Q_H) / Q_i.

Question 15

Pass-out turbines are used in which of these cases?

A)relatively high back pressure
B)small heating requirement
C)only relatively low back pressure
D)both relatively high back pressure and small heating requirement

Question 16

Which of these is a working fluid in the topping plant of a Brayton-Rankine combined plant?

A)hydrogen
B)helium
C)nitrogen
D)all of the mentioned

Question 17

To improve the efficiency of the gas turbines, which among these are used?

A)regenerator
B)inter cooling
C)reheating
D)all of the mentioned

Question 18

Which material is used for the manufacture of the turbine blades?

A)stainless steel
B)carbon steel
C)high nickel alloy
D)high alloy steel

Question 19

Which of the following is a type of Gas Turbine Plant?

A)single acting
B)double acting
C)open
D)none of the mentioned

Question 20

Which among these is the main component of a gas turbine plant?

A)condenser
B)compressor
C)boiler
D)both compressor & boiler

Question 21

The maximum steam temperature in a power cycle in degree centigrade is?

A)600
B)500
C)300
D)100

Question 22

By superposing a high temperature power plant as a topping unit to the steam plant, the energy conversion efficiency achieved is?

A)higher
B)lower
C)maximum
D)minimum

Question 23

Which of these is not a merit of nuclear power?

A)amount of fuel required is small
B)plant requires a huge amount of area
C)demand for coal and oil is reduced
D)most economical in large quantities

Question 24

In an electron beam, the average kinetic energy of an electron is given by ______

A)2kt
B)3kt
C)1.5kt
D)2.5kt