Teaching BPSC बिहार माध्यमिक TGT (9 to 10) शिक्षक भर्ती 4.0 Mock Test Physics Thermodynamics Heat engines
The two basic types of heat engine are-
1
External combustion engine , Internal combustion engine .
2
Source, Sink
3
Source, Sink and Working substance
4
More than one of the above
5
None of the above