Tag: #stressconcentration
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EK General Jul 2024 (Q6)
With reference to a keyless propeller designed for hydraulic (wet) fit and withdrawal: (a) Describe, with the aid of a sketch, how the propeller is fitted to the tail shaft; (6) (b) State TWO advantages compared to a dry fit; (2) (c) Explain how the thrust is transmitted without the use of a key and…
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EK Motor Dec 2020 (Q8)
With reference to fatigue of engineering components: (a) Draw an S/N curve for steel, showing the Fatigue Limit and two representative stress-cycle conditions on the graph (4) (b) Explain how a component is designed to avoid fatigue failure, using the S/N curve drawn in part (a) (4) (c) Explain how poor maintenance and incorrect machinery…
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EK General Oct 2022 (Q6)
With reference to a hydraulic steering gear, explain EACH of the following: (a) the factors that may contribute to the failure of a hydraulic pipe coupling: (2) (b) why it is of the utmost importance that in the event of a hydraulic system failure that the rudder is locked and isolation of the affected area…
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EK General Mar 2018 (Q5)
(a) State the regulations pertaining to the main and auxiliary steering gear with reference to EACH of the following (i) Rudder angle and time of operation (2) (ii) Electrical supply (3) (b) With reference to a hydraulic steering gear, explain EACH of the following (i) The factor that may contribute to the failure of a…
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EK General Mar 2018 (Q1)
With reference to machinery parts under cyclic loading, describe, with the aid of sketches, how the propagation of even the smallest of cracks can lead to total component failure (10) Materials Mar 2018 (Q1)
