Test Online and Answers for Marine Engineering and Navigation (CES v6.0)

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Правильні відповіді:
1

On the air compressor crankcase, there is a small valve that let’s off pressure. What should be done if oil is present with air?

Правильну відповідь:

Overhaul the compressor unit.

Ваша відповідь:

Lower the sump oil level.
2

How is a “turning couple” formed?

Ваша відповідь правильна:

Couple is formed when two equal parallel forces in a vertical position are acting in opposite direction.
3

Which way does the steam pass through in the system?

Ваша відповідь правильна:

From the high pressure turbine to the low pressure turbine.
4

Your ship is operating with a right handed propeller. Before coming astern, how should you apply the rudder?

Ваша відповідь правильна:

As with No. 2.
5

Which of the following statements regarding steam turbines is NOT true?

Ваша відповідь правильна:

From the HP turbine, the steam then goes to the condenser.
6

Which alarm and shut-down device is fitted on the thrust bearing assembly?

Ваша відповідь правильна:

The axial clearance alarm.
7

Which of the equipment listed is not included in the fireman’s personal equipment? (SOLAS II-2/17.1.1).

Ваша відповідь правильна:

Leather safety boots and gloves.
8

What can be used to reduce the effect of the state of sea-waves?

Ваша відповідь правильна:

Vegetable/fish oil.
9

Which position is the best to stop bleeding from the nose?

Ваша відповідь правильна:

Sitting on a chair, leaning forward with two fingers pressing the nose together.
10

What kind of steam is feeding the astern turbine fitted on the same rotor as the LP turbine?

Ваша відповідь правильна:

Steam from the main steam manifold via manoeuvring stand.
11

How will the ship behave if you have a black out in the situation sketched below?

Правильну відповідь:

She will turn to port and the speed will drop gradually.

Ваша відповідь:

She will continue on course and the speed will slowly drop.
12

What is the minimum allowable value for GM?

Ваша відповідь правильна:

0,15 m.
13

Why is the maximum pressure in a plate heat exchanger usually limited to about 10 bar?

Ваша відповідь правильна:

Difficult to seal plates above this pressure.
14

How is bank effect felt in a vessel?

Ваша відповідь правильна:

The vessel’s bow is pushed away from the nearest bank.
15

What does permeability mean?

Ваша відповідь правильна:

The relationship between the volume of a compartment and the volume available for water if bilged.
16

What shall you do if you see a person falling into the sea?

Ваша відповідь правильна:

Throw a lifebuoy overboard and report to the bridge immediately.
17

Self-igniting lights on lifebuoys must either burn continuously or flash at a specified rate for a period of at least:

Ваша відповідь правильна:

2 hours.
18

On a steamship at sea, electricity is supplied by:

Ваша відповідь правильна:

Turbo alternators.
19

What is the absolutely main purpose of fighting a fire onboard?

Правильну відповідь:

Rescuing of life.

Ваша відповідь:

To put out the fire.
20

What is the required salinity of the fresh water produced as drinking water onboard?

Правильну відповідь:

Below 7 ppm.

Ваша відповідь:

Below 2 ppm.
21

In a distress situation, how many times or for how long should the emergency alarm signal be sounded?

Ваша відповідь правильна:

Until all crew members and passengers have reported to their respect muster stations.
22

You are underway on a power driven vessel in open water, when you see another power driven vessel approximately five miles straight ahead on an opposite course. What action do you take?

Ваша відповідь правильна:

Make a bold alternation to starboard and pass on his port side.
23

Which of the following statements regarding main boilers is NOT true?

Ваша відповідь правильна:

The feed water need not be very pure.
24

Unconscious casualties who are brething and whose hearts are beating should be placed in the recovery position. What is the recovery position?

Ваша відповідь правильна:

As shown in figure 1.
25

What is part No. 3?

Ваша відповідь правильна:

Turbine drive gear train.
26

Water hammer is a short lasting pressure peak traveling along the pipe. How can it be avoided in a cooling water system?

Ваша відповідь правильна:

Operate valves gradually.
27

Name the two (2) different lubrication oil circuits of a steam turbine:

Ваша відповідь правильна:

The bearing and gear oil circuit/the governor oil circuit.
28

What measures regarding ship stability should be taken in order to make a passenger ship’s able to withstand critical damage?

Ваша відповідь правильна:

Maintain sufficient intact stability.
29

Turbo alternators perform which of the following tasks?

Ваша відповідь правильна:

Supplying electricity on steamships when the main boiler is operating.
30

When you join a new ship, how are you informed about safety rules, alarm instructions and your own duties in case of an emergency?

Ваша відповідь правильна:

By muster lists exhibited in conspicuous places.
31

The watertight integrity of a vessel must be intact, when:

Ваша відповідь правильна:

When manoeuvring.
32

How can you minimize the squat effect?

Ваша відповідь правильна:

Decrease the speed as much as practicable.
33

What is the reason for the effect we call squat?

Ваша відповідь правильна:

Increased velocity and decreased water pressure around the ship’s hull.
34

Where can you find out if you belong to the forward mooring gang or the aft mooring gang?

Ваша відповідь правильна:

Posted on the notice board onboard.
35

How often shall each member of the crew participate in an abandon ship drill?

Ваша відповідь правильна:

Once every month.
36

You are about to pass another ship in a close situation. What can happen in this situation?

Ваша відповідь правильна:

Due to suction, the two ships will be sucked together.
37

What is initial stability?

Ваша відповідь правильна:

It is the stability of the vessel in her initial position, and is expressed by metacentric height.
38

Which of these requirements regarding the launching and recovery arrangements for rescue boats corresponds to the SOLAS regulations?

Ваша відповідь правильна:

Rapid recovery shall be possible with the boat’s full complement of persons and equipment.
39

Boiler feed water is water:

Ваша відповідь правильна:

Taken from the condenser and fed back to the boiler.
40

What is the result of a high metacentric height?

Ваша відповідь правильна:

The vessel will roll violently.
41

You want to turn your vessel in a narrow canal by use of two tugs with same power. The wind varies in the range moderate/strong. Where/how will the tugs be used?

Ваша відповідь правильна:

Pushing, made fast in the vessel.
42

What are “hydrostatic curves” used for in ship calculations?

Ваша відповідь правильна:

Mainly for trim calculations for predicting end draughts.
43

In a two stage compressor, you will find pistons with different diameters (one is bigger than the other). Which one of the following statement is correct?

Ваша відповідь правильна:

The smallest diameter piston is the stage two piston.
44

What is the “wave period”?

Ваша відповідь правильна:

It is the time in seconds between successive wave crests or troughs, passing a fixed point.
45

What is meant by “synchronism or resonance”?

Ваша відповідь правильна:

This is a dangerous condition that occurs when the ship’s still water period and the apparent wave period are equal.
46

In which way make intake of poisonous material occur?

Ваша відповідь правильна:

All mentioned.
47

What is hypothermia and how is it cured?

Ваша відповідь правильна:

Body temperature below 35 °C/Heat the body.
48

What is the general emergency alarm signal to be sounded by the ship’s whistle and alarm bells in case of an emergency situation?

Ваша відповідь правильна:

Seven short blasts followed by one prolonged blast.
49

What is the formula to calculate the volume of displacement?

Ваша відповідь правильна:

B by Km by d by cb.
50

What is the main advantage of plate heat exchangers?

Ваша відповідь правильна:

More efficient and take up less space.
51

What is statical stability?

Ваша відповідь правильна:

It is the ability of a vessel to return to her initial or upright position, after having been forcibly inclined.
52

If the fresh water generator is producing water with salinity of 5 ppm and is changed to produce water of 2 ppm, this is mainly achieved by:

Правильну відповідь:

Slowing down production by opening the vacuum breaker valve.

Ваша відповідь:

Decreasing production by lowering fresh water supply from main engine.
53

How many rocket parachute flares are carried in each lifeboat?

Ваша відповідь правильна:

4.
54

What is the purpose of the sea water pump item No 13?

Правильну відповідь:

To drive the air ejector of the evaporator.

Ваша відповідь:

To supply sea water to the condenser.
55

After obtaining permission from the duty deck officer, under what conditions would the process of soot blowing the boiler tubes be most beneficial?

Ваша відповідь правильна:

When the boiler is firing on high rate.
56

How do you ensure reliable results from an inclining experiment?

Ваша відповідь правильна:

Perform test in calm conditions, with slack moorings, with minimum number of personnel and minimise free surface effects of liquids.
57

Your vessel is to unmoor. Two tugs will assist at the unmooring. Which position and how do you want to use the tugs?

Ваша відповідь правильна:

Fast FWD and AFT in centre lead to pull the vessel out from the jetty and make it in position for voyage.
58

What is a “Rescue Sub-Centre” (RSC)?

Ваша відповідь правильна:

A unit subordinate to a rescue co-ordinating centre.
59

What liquid is present in the collecting point at the bottom of the evaporator?

Ваша відповідь правильна:

Brine.
60

In case of a fire inside the acetylene-line in the AC/OX gas welding equipment, what action is deemed necessary?

Ваша відповідь правильна:

Close the valves on both acetylene and the oxygen bottles.
61

The ship’s training manual must contain instructions and information on the life-saving appliances carried onboard. Which of these duties must be included?

Ваша відповідь правильна:

Correct donning of life jackets.
62

The passage of electrical current through the body may result in severe and sometimes fatal injuries. You are witness to a man getting electric current through his body and is stuck to the dangerous area. It is impossible to switch off the current by any main switch. How can you break the current safely?

Ваша відповідь правильна:

Stand on dry insulating material and pull the person away with insulating material.
63

A receiver in a refrigeration system is used to:

Ваша відповідь правильна:

Store the refrigerant.
64

What is the purpose of the control position on an enclosed lifeboat?

Ваша відповідь правильна:

It’s the position from which the boat is steered and the safety systems are operated.
65

In the event of a fire situation, which of the following actions is the first to be taken?

Ваша відповідь правильна:

Raise fire alarm.
66

What kind of safety protection is to be weared during a mooring operation?

Ваша відповідь правильна:

Helmet, safety shoes, gloves and protecting cloths.
67

What is the BM for a box-shaped vessel in terms of breadth and draught?

Ваша відповідь правильна:

Breadth squared / 12 × draught.
68

Serious tube leakage in the air ejector condenser assembly will cause:

Ваша відповідь правильна:

Loss of vacuum.
69

You are to release the towing wire with forerunner. You have 3 men with you to do the work. How do you do it in a safe way?

Ваша відповідь правильна:

Use the winch. Forerunner and wire stopper to pick up the slack and stop the wire. One man operating each. Make the forerunner fast on the bit, releasing the eye of wire and the stopper, lower the wire easy by forerunner.
70

What is part number 1 called?

Ваша відповідь правильна:

The service tank.
71

The condenser in a steam plant is where:

Ваша відповідь правильна:

Steam is turned back into water.
72

Modern high pressure boilers produce which of the following?

Ваша відповідь правильна:

Superheated steam.
73

The Disc type oil separator can usually separate water from oil when processing oils between which density ranges?

Ваша відповідь правильна:

0,78 to 0,98.
74

Unconscious casualties who are breathing and whose hearts are beating should be placed in the recovery position. Why is this position so important?

Ваша відповідь правильна:

The position ensures that an open airway is maintained.
75

The two main types of refrigeration system evaporators are called?

Ваша відповідь правильна:

Finned and tube.
76

The ship’s training manual must contain instructions and information on the life saving appliances carried onboard. Which of these duties must be included?

Ваша відповідь правильна:

Correct launching, boarding and clearing of survival craft and rescue craft.
77

What is a “Rescue Unit” (RU)?

Ваша відповідь правильна:

A unit composed of trained personnel suitability equipped for expeditious search and rescue.
78

The diagram shows loadline marks. How is the distance between S and T calculated?

Правильну відповідь:

One forty eighth of the summer draft.

Ваша відповідь:

Four fifths of the FWA.
79

In the shown situation, the bow of your ship is pushed away from the bank. How can you handle this?

Ваша відповідь правильна:

Give starboard rudder in order to balance the force of the bank effect and rudder effect.
80

What formula do you use to determine the GM from an inclining experiment?

Правильну відповідь:

GM = w by distance by length of plumbline divided by W by deflection of the plumbline.

Ваша відповідь:

GM = KM by d by 1/2 length of plumbline divided by W by length of plumbline.
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