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Q7. A. Describe how thrust power is determined. B. The following information relates to a model propeller of 400mm pitch.
Rev/Min
400
450
500
550
600
Thrust N
175
260
365
480
610
Torque Nm
16.8
22.4
28.2
34.3
40.5
i. Plot curves of thrust and torque against rev/min; ii. When the speed of advance of the model is 150m/min and slip 0.20, calculate the efficiency?
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Question Subject: MEO Class II : NAVAL (2013/AUG)
Total Questions: 10