If the fuel is rich in fissionable material, the reactor can be made more compact than if the percentage of fissionable atoms is small.

In a four stroke engine, the working cycle is completed in

Enriched uranium may contain fissionable contents from

A nuclear power plant differs from a conventional steam power station only in the steam generating part.

In a petrol engine, the fuel supplied to the engine cylinder is mixed with required quantity of air and the mixture is ignited with a