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Medium Speed Propulsion

CES Engine Management 620 questions

First 5 of 620 questions — with answers

The correct answer is marked. Unlock the rest to study the whole test, online or offline.

  1. Question 1

    Code: cwWZHhSK How can the pressure be regulated during start up of a positive displacement pump such as a gear pump?
    • Positive displacement pumps operate at constant pressure and cannot be regulated.
    • Adjustment of the pressure relief valve to recirculate part of the flow.
    • By throttling the discharge valve.
    • By throttling the suction valve.

  2. Question 2

    Code: BAMNMf1y The torsion meter for the main propeller shaft is reading high. The torque is sensed using the angle of twist principle with two clamp rings attached to the shaft at a fixed distance, with stationary proximity switches for measuring the angle of twist and also shaft speed fixed to a rigid stool. What is the most likely cause of the high reading?
    • Axial slip of one of the clamp rings to bring them closer together.
    • Circumferential slip of the forward clamp ring in the opposite direction to shaft rotation.
    • Circumferential slip of the after clamp ring in the opposite direction to shaft rotation.
    • Axial slip of one of the clamp rings to move them further apart.

  3. Question 3

    Code: 6rHg$cHW How can a lead-acid type battery be checked to confirm if it is fully charged or not?
    • Measure the relative density (specific gravity) of the electrolyte.
    • Measure the battery voltage.
    • Measure the level of the electrolyte.
    • Measure the temperature of the electrolyte.

  4. Question 4

    Code: U55ccR14 The bottom end bolts employed in 4 stroke diesel engines are usually given a finite life and must be replaced periodically. What would be the normal failure mode that would affect these bolts if they were not replaced as required?
    • Failure due to fatigue stresses.
    • Failure due to tensile stresses.
    • Failure due to torsional stresses.
    • Failure due to bending stresses.

  5. Question 5

    Code: cCg5SP1o How will continuous low load operation influence the time between overhauls, tbo, for the cylinder covers and associated valves of a 4-stroke diesel engine?
    • Increase the time between overhauls since fuel injectors work better at low load so combustion will be improved and the maintenance will be reduced.
    • No influence at all, the required overhauls are unaffected by operating load.
    • Increase the time between overhauls since the engine is not working as hard.
    • Reduce the time between overhauls due to increased fouling.

Preview — 5 of 620 questions

You are seeing the first 5 questions with answers. Unlock the remaining 615 to study the whole test — online or offline.

About this CES test

Medium Speed Propulsion is a CES test for the Engine department at Management level with 620 questions and verified answers. Common topics include: diesel engine, boiler water, fuel pump, refrigeration system, cause problem, heat exchanger, main propulsion, cylinder head.

You can practise the free questions online — one at a time, with the correct answer — or unlock the whole test and download it to study offline, without internet.

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