A nuclear unit becoming critical means

A It is generating power to rated capacity
B It is capable of generating much more than rated capacity
C There is danger of nuclear spread
D Chain reaction that causes automatic splitting of the fuel nuclei has been established

Correct Answer: Chain reaction that causes automatic splitting of the fuel nuclei has been established

A nuclear unit becoming critical means Chain reaction that causes automatic splitting of the fuel nuclei has been established
when the reactor is in a configuration such that one neutron from each atom fissioned causes another fission and then the reactor is said to be critical
Bissoy MCQ
#Mechanical Engineering #Power Plant Engineering

Related Questions

If 'blue' means 'green', green' means 'yellow' 'yellow' means 'orange', 'orange' means 'black', 'black' means 'white', 'white' means 'red', 'red' means 'pink', 'pink' means 'brown', 'brown' means 'grey', than what is the color of human blood?
A black
B red
C white
D orange
A policy taken with critical illness rider benefit is being assigned. Which type of assignment would suit the intended purpose because if the life insured is diagnosed with a critical illness, he only should receive the critical illness rider claim?
A Absolute assignment
B Conditional assignment
C Loan assignment
D Collateral assignment
If A + B means A is the sister of B; A x B means A is the wife of B, A % B means A is the father of B and A - B means A is the brother of B. Which of the following means T is the daughter of P?
A P x Q % R + S - T
B P x Q % R - T + S
C P x Q % R + T - S
D P x Q % R + S + T
If X + Y means X is the daughter of Y; X - Y means X is the brother of Y; X % Y means X is the father of Y and X x Y means X is the sister of Y. Which of the following means I is the niece of J?
A J - N % C x I
B I x C - N % J
C J + M x C % I
D I x C + N - J
The critical depth for a channel is given by (where q = Unit discharge (discharge per unit width) through the channel)
A $${\left( {\frac{{\text{q}}}{{\text{g}}}} \right)^{\frac{1}{2}}}$$
B $${\left( {\frac{{{{\text{q}}^2}}}{{\text{g}}}} \right)^{\frac{1}{3}}}$$
C $${\left( {\frac{{{{\text{q}}^3}}}{{\text{g}}}} \right)^{\frac{1}{4}}}$$
D $${\left( {\frac{{{{\text{q}}^4}}}{{\text{g}}}} \right)^{\frac{1}{5}}}$$
Money, as a means of exchange, is becoming less common in modern societies all over the world. Every year, a higher percentage of purchases are made online, and even in stores customers are now using credit cards. Many people today do all of their banking on the Internet. The author of the passage probably assumes that
A cash will become obsolete in the near future
B societies that do business online will struggle
C paying with credit cards all the time is dangerous
D using cash will become popular again
The efficiency of a nuclear power plant in comparison to conventional and nuclear consideration is
A Higher cost of nuclear fuel
B High initial cost
C High heat rejection in condenser
D Lower temperature and pressure conditions
Ceramic nuclear metals compared to solid nuclear metals have
A higher melting points
B low strength at high temperature
C more chances of radiation damage
D poorer corrosion resistance
Their cells have a very well defined nucleus ,in which nuclear material (chromosomes or DNA) is enclosed in double nuclear membrane.
A Prokaryotes
B Bacterial
C Viral
D Eukaryotes
CANDU type nuclear reactor using natural uranium as fuel is the extensively used nuclear reactor because of the fact that the
A Specific fuel consumption is very low due to the use of heavy water
B Fuel cost is much lower than that used in pressurised water or boiling water reactor
C Heavy water is used both as coolant as well as moderator
D Both B and C

Next steps