Tag: #ekmanagmentwritten

—

by

With reference to an engine air starting system. (a) Explain why a slow turning system is fitted (4) (b) State, with reasons, when a slow turning system operates (2) (c) Describe with the aid of a sketch, an air starting system, explaining how the slow turning system operates (10) Starting & control Mar 2022 (Q5)

EK Motor Mar 2022 (Q4)

—

by

(a) State, with reason, SIX points which should be covered in a risk assessment for the replacement of a crosshead main engine fuel injection pump in port (6) (b) Write instruction for the replacement of a crosshead main engine fuel injection pump (10) Fuel pump & injectors Mar 2022 (Q4)

EK Motor Mar 2022 (Q3)

—

by

(a) Describe with the aid of a sketch, an external system for reducing engine NOx emissions, explaining the chemistry of the process (8) (b) Explain why urea is used in the Selective Catalytic reduction process instead of ammonia (4) (c) Explain why the exhaust gas quality must be monitored before and after the Selective Catalytic…

EK Motor Mar 2022 (Q2)

—

by

(a). Explain, with the aid of a sketch, Thermal stress, stating how thermal stresses induced in the cylinder liner when the engine is operating (8) (b) Explain why thermal stress may be damaging to an engine cylinder (4) (c) Explain how thermal stress may be avoided in an operating engine without reducing engine power output…

EK General Jul 2024 (Q3)

—

by

in EK GENERAL

With reference to propeller shaft support bearings: (a) Describe, with the aid of a sketch, the operation of a tilting pad shaft bearing, indicating how the oil pressure is distributed (b) Explain why this type of bearing evolved, stating its advantages over plain bearings Jul 2024 (Q3)

EK Motor Mar 2022 (Q1)

—

by

Write a report to the engineering superintendent regarding the failure at sea of a crosshead main engine bottom end bearing. The report must explain how the defect was detected, the immediate action taken to prevent further engine damage, the subsequent action taken to ensure that the vessel was able to continue on passage to the…

EK General Jul 2024 (Q2)

—

by

in EK GENERAL

With reference to pneumatically operated control valves: (a) State the reasons for fitting a valve positioner; (4) (b) Describe, with the aid of a sketch, valve hysteresis, stating how it affects the process; (3) (c) Describe how design and routine maintenance can limit hysteresis. (3) Control system Jul 2024 (Q2)

EK Motor Dec 2021 (Q9)

—

by

Dec 2021 (Q9)

EK General Jul 2024 (Q1)

—

by

in EK GENERAL

(a) Describe the properties of EACH of the following alloys used in marine engineering, giving a practical example for which EACH are suited: (i) Cupro-nickel (2) (ii) White metal (2) (iii) Titanium (2) (b) Discuss the merits of EACH of the following alloys for use in the casting of large propellers: (i) Nickel aluminum bronze.…

EK Motor Dec 2021 (Q8)

—

by