1. The nozzle efficiency is defined as the ratio of the actual enthalpy drop to the isentropic enthalpy drop between the same pressures. |
2. Velocity coefficient is defined as the ratio of exit velocity when the flow is isentropic, to the actual velocity. |
3. The included angle of divergence is usually kept more than \[20{}^\circ .\] |
A) 1 only
B) 1 and 2 only
C) 3 only
D) 1, 2 and 3
Correct Answer: D
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