Physics of nuclear power
Answers are for parents and teachers.
1
The electric power is 900 MW and efficiency 30 %. What is the thermal power in MW?
3000
2
If k = 3, starting from 1 neutron, how many neutrons are there after 4 multiplication steps (1 → 3 → …)?
81
3
One fission releases 200 MeV (1 MeV = 1.6·10⁻¹³ J). How many joules?
3.2·10⁻¹¹ J
4
What is the job of the coolant?
It carries heat out of the core to the steam generator and keeps the core from overheating.
5
Why are thick concrete and a sealed containment built around a reactor?
To absorb neutron and γ radiation, stop radioactive materials escaping, and protect workers and the public.