215) The slowing down of fast neutrons is desirable because slow moving neutrons are more effective than fast neutrons in triggering fission.

Agree

Disagree

Answer is:

Agree

100

120

Answer is:

Yes

Unknown

None

Answer is:

starts at 40 Degree after bottom dead centre and ends at 10 Degree before top dead centre

starts at 40 Degree before top dead centre and ends at 40 Degree after top dead centre

starts at top dead centre and ends at 40 Degree before bottom dead centre

may start and end anywhere

Answer is:

opens at 20 Degree before top dead centre and closes at 40 Degree after bottom dead centre

opens at 20 Degree after top dead centre and closes at 20 Degree before bottom dead centre

opens at top dead centre and closes at bottom dead centre

may open and close anywhere

Answer is: