Power Systems
The radiation shield for a nuclear power reactor for biological safety is provided by having the reactor

 isolated from outside word with strong magnetic field.
 immersed in water pool.
 encased thick metal wall.
  encased by thick concrete wall.

ANSWER DOWNLOAD EXAMIANS APP

Power Systems
An impulse turbine

  operates by initial complete conversion to kinetic energy.
 always operates submerged.
 makes use of a draft tube.
 is most suited for low head and high discharge power plants.

ANSWER DOWNLOAD EXAMIANS APP