In: Mechanical Engineering
Solutions:
Question:
In turbofan engine, the thrust is only generated by the fan, and work generated by the turbine core is only developed to move the fan and compressor of the entire turbine.
true or false
Answer: False
Explanation:
Because thrust in the turbofan engine is generation not only by the fan but also the engine. Engine produces thrust because of bypass of air from the core of the engine.
Question:
The air fuel ratio used in jet engine is very small
true or false
Answer : False
Explaination :
In jet engine the excessive air is used to burn the fuel so, generally the air fuel ratio in jet engine is very high. For example, 50:1, 130:1. The excessive air makes the air fuel mixture very lean.
Question :
The definition of thermodynamics is the study of the behavior of gases and heat.
true or false
Answer: True
Explanation:
Thermodynamic is the study of heat and convert heat (of gases, steam) into the power. So, the given statement is true.