Question

The useful power produced by a reactor of $40$% efficiency , in which $10$${}^{14}$ fissions occuring each second and energy per fission in $275Mev$, is

• A. $0.22Kw$
• B. $0.44kW$
• C. $0.88kW$
• D. $1.76kW$

Answer 1

Answer: (D)

$1.76kW$

Energy produced per second $=275\times {10}^{14}\times {10}^6\times 1.6\times {10}^{-19}$ joules
$=4400$ joules

As, the reactor is only 40% efficient.

Power produced by the reaction $=\frac{4}{10}\times 4400$ joules/second
$=1760$ watt

$=1.76$ KW