Power System - I (3140914) MCQs

MCQs of Conventional Generation, Load Curves and Tariffs

Showing 261 to 270 out of 425 Questions
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261.
Thermal shielding is provided to
(a) Absorb the fast neutrons
(b) Protect the operating personnel from exposure to radiations
(c) Prevent the reactor wall from getting heated
(d) All of above
Answer:

Option (d)

262.
In boiler water reactor (BWR)
(a) Feed water acts both coolant and a moderator
(b) Enriched uranium is used as fuel
(c) There is a danger of radio-active contamination of steam
(d) All of above
Answer:

Option (d)

263.
In a nuclear power station using boiler water reactor (BWR), water is used as
(a) Moderator but not as coolant
(b) Coolant but not as moderator
(c) Both moderator and coolant
(d) Neither moderator nor coolant
Answer:

Option (c)

264.
Tarapur atomic power station has
(a) CANDU type reactors
(b) Boiling water reactors
(c) Pressurized water reactors
(d) Gas cooled reactors
Answer:

Option (b)

265.
The thermal efficiency of a boiler water reactor is ___ that of a pressurized water reactor.
(a) Greater than
(b) Equal to
(c) Less than
(d) Insufficient data
Answer:

Option (a)

266.
In a pressurized water reactor (PWR)
(a) Light or heavy water is used as both coolant and moderator
(b) Water is used at high pressure (as high as 140 kg/cm2) so that it is available in liquid form at about 280˚C
(c) Coolant water boils in the reactor core
(d) Both (a) and (b)
Answer:

Option (d)

267.
CANDU reactor uses
(a) Highly enriched uranium as fuel and light water as moderator and coolant
(b) Natural uranium as fuel and heavy water as moderator and coolant
(c) Enrich uranium as fuel and ordinary water as moderator and cooler
(d) Only fertile material
Answer:

Option (b)

268.
A heavy water reactor
(a) Has higher neutron flux which can be produced at a given power level
(b) Requires less time to shutdown than in the case of graphite because of photo neutron production
(c) Is not stable
(d) Cannot use natural uranium as fuel
Answer:

Option (a)

269.
The conversion ratio of a breeder reactor is
(a) Less than unity
(b) More than unity
(c) Equal to unity
(d) None of above
Answer:

Option (b)

270.
Fast breed reactors are best suited for India owing to
(a) Large thorium deposits
(b) Large plutonium deposits
(c) Large uranium deposits
(d) None of above
Answer:

Option (a)

Showing 261 to 270 out of 425 Questions
24 25 26 27 28 29