113) The reflectivity of a reflector is defined as the fraction of neutrons entering the reflector which are returned to the core.

114) In a four stroke cycle petrol engine, the pressure inside the engine cylinder during the suction stroke is __________ the atmospheric pressure.

115) A diesel engine is __________ as compared to petrol engine, both running at rated load.

116) Which one of the following event would reduce volumetric efficiency of a vertical compression ignition engine ?

117) The pressure at the end of compression, in petrol engines, is approximately