DieselShip's Online Content Library

Q4: A. With reference to MARPOL 73/78, elaborate upon the Second Engineer’s responsibilities with regard to – (10)

i) Avoidance of pollution near coastal and port areas.

 ii) Avoidance of pollution of port atmosphere with smoke.

B. With reference to SOLAS 74 as amended, discuss the following: (10)

i) How fire alarms are distinguished from other alarms.

ii) The requirements for an emergency power supply

Q10. A. Write shorts notes on various types of DC Motors.

B. A 440V shunt motor takes an armature current of 30A at 700 rev/min. The armature resistance is 0.7ohm. If the flux is suddenly reduced by 20 per cent, to what value will the armature current rise momentarily? Assuming unchanged resisting torque to motion, what will be the new steady values of speed and armature current? Sketch graphs showing armature current and speed as functions of time during the transition from initial to final, steady-state conditions.

Q1. As Second Engineer of a new ship,

A. Prepare standing orders for all future bunkering operations onboard;

B. State why it is very important to obtain a representative sample of heavy fuel bunkers taken.

C. State how a representative sample is obtained;

Q5: With reference to fatigue of engineering components explain the influence of stress level and cyclical frequency on expected operating life;

A. Explain the influence of material defects on the safe operating life of an engineering component;

B. State the factors which influence the possibility of fatigue cracking of a bed-plate transverse girder and explain how the risk of such cracking can be minimized.

Q2. A. Describe the double bottom and framing arrangement used in the machinery space to cope up with the concentrated loads and vibration, together with shaft and thrust block support.

B. Give reasons for the choice of thrust block position.

Q1. With reference to International Load Line Statutory Certification,

A. State the reasons for the freeboard requirements;

B. (i) Explain the term “conditions of assignments”;

(ii) List the items that may be examined during a Load line survey after a vessel’s major repairs in the dry-dock.

Q5. With reference to alkaline batteries used on board ship.

A. Describe the operation of a battery cell and state the material used;

B. Describe how the cells are mounted to form a battery;

C. State the advantages and disadvantages compared with lead-acid batteries.

Q5. With reference to air receivers and bottles explain with reasons: A. Why regular systematic internal inspection is advisable? B. Which internal areas of large receivers should receive particularly close examination? C. How bottles are inspected internally and what parts should be closely examined? D. How the condition of a bottle or receiver that cannot be inspected internally is checked?

Q6. A. Describe the events leading to a crankcase explosion.

B. State how overheating might be indicated other than by a mist detector.

C. Discuss the procedure to follow in the invent of overheating being indicated.

D. State how severity of a crankcase explosion is limited.

Q1: Describe how the following conditions are prevented in auxiliary boilers:

A. Feed contamination by oil from heating coil drains.

B. Internal corrosion.

C. Furnace blowback.

D. Uptake fire.

Q1: A. Outline the procedure for the inspection of the rudder in a dry dock.

B. What are the requirement with respect to steeling gear as per SOLAS 74, as amended for the following:

i. Relief valve;

ii. Steering gear control;

iii. Electrical power circuits.

Q2. Sketch a high-lift safety-valve lid and seat detailing their special features. Describe how such a valve is overhauled and any clearance that should be measured and noted. (16)

Q6. With regards to main transmission shaft flange coupling arrangements:

A. Sketch a hollow type coupling bolt and the hydraulic head/nut and loading rod which are used to fit it.

B. Describe how the bolt is fitted.

C. State the advantage of the hollow coupling bolt as compared to the traditional type of coupling bolt.

Q7. A resistor of ohm value 3 ohms is connected in series with a coil of inductance 0.1 H and resistance 1 ohm. If 100 V at a frequency of 50 Hz is applied to the circuit find the current flowing.