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If mf is the mass of fuel supplied per kg of air in one second, then the mass of gases leaving the nozzle of turbojet will be(a) (1 – mf ) kg/s(b) \(\cfrac{1}{(1+m_f)}kg/s\) (c) (1 + mf ) kg/s(d) \(\cfrac{1}{(1-m_f)}kg/s\) |
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Answer» (c) (1 + mf ) kg/s For turbojet engine, total mass of gases coming out will be sum of fuel and air supplied. Hence, mass flow = (1 + mf ) kg/s |
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