5) The thermal efficiency of a standard Otto cycle for a compression ratio of 5.5 will be

25%

50%

70%

100%

Answer is:

50%

mechanical efficiency

overall efficiency

volumetric efficiency

relative efficiency

Answer is:

opens at 50 Degree before bottom dead centre and closes at 15 Degree after top dead centre

opens at bottom dead centre and closes at top dead centre

opens at 50 Degree after bottom dead centre and closes at 15 Degree before top dead centre

may open and close anywhere

Answer is:

to produce heat for thermoelectric power

to produce fissionable material

to propel ships, submarines, aircrafts

all of these

Answer is:

Explanation:

Nuclear reactors are used
* to produce heat for thermoelectric power
* to produce fissionable material
* to propel ships, submarines, aircrafts

graphite

heavy water

concrete

graphite and concrete

Answer is: