1.
For economical operation of a nuclear plant
(a) used fuel should be reprocessed
(b) moderator should be used
(c) coolant should be employed
(d) control rods should be used
(e) reflector should be used.
Ans: a
2. Breeder reactors employ liquid metal coolant because it
(a) acts as good moderator
(b) produces maximum steam
(c) transfers heat from core at a fast rate
(d) breeds neutrons
(e) increases rate of reaction in core.
Ans: c
3. Which of the following can be used as a coolant in nuclear plant
(a) light or heavy water
(b) molten lead
(c) carbon dioxide
(d) freon
(e) carbon tetrachloride.
Ans: a
4. Which of the following is the primary fuel
(a) Ulii
(b) U
(c) U238
(d) Pu:
(e) Pu
Ans: b
5. Which of the following type of pump is used in liquid metal cooled reactor for circulation of liquid
metal
(a) centrifugal
(b) axial
(c) reciprocation
(d) electromagnetic
(e) diaphragm.
Ans: d
6. Pick up the wrong statement Fast breeder reactors
(a) operate at extremely high power densities.
(b) are liquid-metal cooled
(c) produce more fuel than they consume
(d) are unmoderated
(e) use water as coolant.
Ans: e
7. Uranium-233 is produced
(a) as basic raw material
(b) by neutron irradiation of Uz
(c) by neutron irradiation of thorium
(d) artificially
(e) in high capacity furnaces.
Ans: c
8. Hydrogen is preferred as better coolant in comparison to C02 because former
(a) is lighter
(b) is inert
(c) has high specific heat
(d) is a good conductor
(e) all of the above.
9. U235 will undergo fission by
(a) high energy (fast) neutrons alone
(b) low energy (slow) neutrons alone
(c) either fast or slow neutrons
(d) medium energy neutrons
(e) none of the above.
Ans: c
10. Nuclear reactors are used
A.to produce heat for thermoelectric power
B.to produce fissionable material
C.to propel ships, submarines, aircrafts
D.all of these
Answer: Option D
11. Moderator is not required in
a. Pressurized water reactor
b. Gas cooled reactor
c. Boiling water reactor
d. Breeder reactor
(Ans:d)
12 In which of the following, an intermediate heat exchanger is used
a. Pressurized water reactor
b. Boiling water reactor
c. Gas cooled reactor
d. Liquid metal cooled reactor
(Ans:d)
13. Gas cooled reactors are _____ moderated.
a. Light water
b. Heavy water
c. Graphite
d. Beryllium
(Ans:c)
14. In Canadium Deuterium Uranium reactor (CANDU), heavy water is used as
a. Moderator
b. Coolant
c. Neutron reflector
d. All of the above
(Ans:d)
15.In Canadium Deuterium Uranium reactor (CANDU), the control rods are made of
a. Cadmium
b. Boron steel
c. Graphite
d. Beryllium
(Ans:a)
16. The reactor performs the following function as that of _____ in a steam power plant.
a. furnace
b. turbine
c. electric generator
d. boiler
(Ans:a)
17. In pressurized water reactor
a. light water is used as coolant
b. light water is used as coolant and moderator
c. heavy water is used as coolant
d. heavy water is used as coolant and moderator
(Ans:b)
18. In which of the following reactors, heat exchanger is not used?
a. Pressurized water reactor
b. Boiling water reactor
c. CANDU reactor
d. Gas cooled reactor
(Ans:b)
19. Which isotope of uranium is used for the nuclear fission reaction
a. U-234
b. U-235
c. U-238
d. U-233
ANSWER: b.
20. One atomic mass unit is equivalent to________.
a. 931.4 MeV
b. 251.2 MeV
c. 120.4 MeV
d. 892.4 MeV
ANSWER:a
21. In a hydro power plant
(a)potential energy possessed by stored water is converted into electricity.
(b) kinetic energy possessed by stored water is converted into potential energy.
(c) electricity is extracted from water.
(d) water is converted into steam to produce electricity.
Ans. (a)
22.A hydraulic turbine converts the potential energy of water into
a. Kinetic energy
b. Heat energy
c. Thermal energy
d. Gravitational energy
(Ans:a)
23. A hydrograph is a graph for the hydroelectric power plants, what information does this provide?
a. The discharge at any time during the period of consideration
b. Total volume of flow upto any time given by the area under the curve upto that time.
c. The mean run off during the period.
d. All of these
ANSWER: d.
24. The area under the flow duration curve represents
a. The total units of energy available
b. The total quality of run off during that period
c. Total power available
d. Total storage of the plant
ANSWER: b
25. The location of surge tank is close to ____________.
a. Tailrace
b. Dam
c. Turbine gate
d. Spillway
ANSWER: c
26.The limit of water head for the Francis turbines is_____________.
a. 200 m – 500 m
b. 30 m – 200 m
c. Less than 30 m
d. More than 500 m
ANSWER: b
27. The specific speed of a water turbine is_________.
a. Maximum speed i.e ((120*f) / P)
b. Minimum metric H.P
c. Unit H.P at all heads
d. Unit H.P under a unit head
ANSWER: d
28. The maximum limited head for a Kaplan turbine is___________.
a. 30 m
b. 50 m
c. 100 m
d. 75 m
ANSWER: a
29. The bulb turbines are mainly_________.
a. High speed turbines
b. High head and axial flow turbines
c. Low head and axial flow turbines
d. High pressure turbine
ANSWER: c
30. Water hammer occurs in ______________.
a. Spillway
b. Penstock
c. Turbine casing
d. Surge tank
ANSWER: b
31.The pumped storage power plant in India _________.
a. Does not exist
b. Bhakra Nangal (Punjab, Himachal Pradesh)
c. Kadamparai (Tamilnadu)
d. Koyna (Maharashtra)
ANSWER: c
32. The hydroelectric power plants are__________.
a. Operating cost is high and initial cost is high
b. Operating cost is low and initial cost is high
c. Operating cost is low and initial cost is low
d. Operating cost is high and initial cost is low
ANSWER: b
