ETO QUESTION BANK
Engineering Knowledge
1.
What is glide?
2.
Describe bunkering
procedure?
3.
How the tail shaft
sealing arrangement is done?
4.
What are the measures
you will take if the gland packing leaks continuously?
5.
Why intermediate shaft
is given?
6.
How will you take out
the valves of air compressor?
7.
During dry dock what
will you check in seachest valves?
8.
What are the safeties
of air compressor?
9.
What is Heleshaw pump?
10.
Define valves and
cocks and their functions
11.
Which valve is
suitable for remote controlled operation and why?
12.
What is rudder drop
and jumping clearance?
13.
Where and why bursting
disc is provided in an air compressor?
14.
What are reasons of
lifting up inter stages safety valves in an air compressor?
15.
How to test compressor
safety valve?
16.
How will you overhaul a
globe valve?
17.
What are the reasons
for a sticking gate valve?
18.
What is the theory of
density correction?
19.
How does quick closing
valve function?
20.
How do you specify
pipe sizes?
21.
How do you select
correct current setting for welding?
22.
What is the common
size between different schedules of pipes?
23.
Where telescopic
feeler gauges are used?
24.
What are the safeties
of cargo crane?
25.
What are the safeties
provided on engine room overhead crane?
26.
Where are wear rings
used?
27.
What is hunting gear?
28.
Explain welding
surface preparation?
29.
Draw a lip seal and
how it works?
30.
Who will
you align a pump and its motor?
31.
Sketch exhaust bellow?
32.
What are the testings
carried out on steering gear during a drill?
33.
Mention fresh water
generator shell temperature, vacuum, and other parameters?
34.
What is the
significance of stern tube header tank?
35.
What are the
advantages of four ram steering gear?
36.
Describe checks on
fresh water generator during watch?
37.
What is the
significance of greasing steering gear?
38.
What is reverse
osmosis?
39.
What is purifier and
clarifier?
40.
Discuss purifier
operation?
41.
What are fuel oil
testings done on board ships?
42.
What on board tests
are done in lube oil?
43.
What is the correct
procedure to collect lube oil for testing?
44.
What is the
temperature of fuel oil entering and leaving purifier?
45.
What are the safeties
of fresh water generator, steering gear and oily water separator?
46.
Why purifier
overflows?
47.
What is viscometer?
48.
What is the function
of air compressor unloader?
49.
What is the function
of expansion valve?
50.
How the unloader works
in an ac compressor?
51.
Why fridge compressor
is belt driven?
52.
How is the temperature
of cold rooms maintained?
53.
What is he difference
between air compressor and ac compressor?
54.
What is critical
temperature and pressure?
55.
What is latent heat?
56.
What is meant by short
cycling in fridge compressor?
57.
Different types of
pumps and where they are used?
58.
What is the
discharge pattern of reciprocating pumps and other pumps?
59.
What is jumping
clearance?
60.
How many types of
steering gear are there?
61.
Describe arrangement
of stern tube?
62.
How stern tube cooling
is done?
63.
How to take crank
shaft deflection?
64.
Why the suction
pressure of refrigeration plant and ac plant are different?
65.
What is the function
of rudder carrier bearing?
66.
How many types of
fresh water generator are there?
67.
Why centrifugal pump
has no relief valve?
68.
Arrangements for
relieving shocks in the steering gear?
69.
What is bell mouth?
70.
What is interface of
purifier?
71.
What are swash plate
pumps?
72.
Why is oil coming from
the water side of purifier?
73.
Explain the
significance of heat treatment in steels?
74.
Hosing down procedure
for engine room tank top?
75.
What are the
precautions before entering inside an air reservoir?
What is stroke?
· RPM of Low,
Medium and High speed engines?
· Discuss Otto
cycle, Diesel cycle, Dual cycle and Actual cycle
· Timing
diagram of 2-stroke engine
· Timing
diagram of 4-stroke engine
· Difference
between 2-stroke and 4-stroke engine?
· Material of
Piston, Connecting Rod, etc.
· What is
Cross flow, Loop flow and Uniflow scavenging?
· What
is over speed trip and how it works?
· Types of IC
engines
· What is
stroke to bore ratio?
· What is mean
effective pressure?
· What is
turbocharger?
· Why air is
passes through the air cooler?
· How you
prepare Main engine in 1 hour notice?
· What is the
purpose of cylinder relief valve?
· At what
speed air break for main engine can be given?
· Causes of
water coming out during blow through?
· Procedure to
take over a watch?
· What is dead
man's alarm?
· How to take
the liner calibration?
· How many
types of fuel pumps are used in marine diesel engines?
· What action
you will do after De-carbonization of an auxiliary engine?
· What will be
your action on a vibrating turbocharger?
· How to overhaul a
fuel injector?
· What are main engine
safety devices?
· How differential
pressure switch works?
· What is CPP?
· What is the
difference between SMC and ordinary engine?
· How will you
decarbonise your main engine?
· Why noises coming
from telescopic pipes?
· How oil mist detector
works?
· How to remove
crankshaft?
· How to take
crankshaft deflection?
· How will you take
tappet clearance?
· How will you check
main, big end, thrust and cross head bearing clearances?
· What are the normal
clearances obtained?
· What are the causes
of sudden over speed of main engine?
· What are the causes
of engine power loss?
· What are the causes
of speed fluctuation of engine?
· What are the causes
of reduced compression pressure?
· What are the causes
of knocking?
· What is
ignition delay and how to reduce it?
· What will you do for
proper atomisation?
· What is the
difference between clearance volume and swept volume?
· What is overlapping
in fuel timing?
· What is the material
of cooler tubes?
· What is stuffing box?
· What are the rotating
mechanism of exhaust valves?
· How is lube oil for
cross head is delivered?
· What is the
difference between stuffing box drain and scavenge drain oil?
· What is the role of
thrust bearing and location?
· Why fuel timing is
important and how the same is checked?
· How BHP is calculated
with indicator diagram?
· Why expansion tank is
provided in jacket water system?
· What is the
difference between auxiliary and main engine governor?
· What do you
understand by specific cylinder oil consumption?
· What inspection you
carry out after grounding of the vessel?
· What is
supercharging?
· What is the
difference between RTA and RND engine?
· Describe rudder dismantling?
· Describe propeller
dismantling?
· What are main engine
interlocks?
· What is crank case
explosion and how it occurs?
· Scavenge fire
reasons and remedy?
· Explain about exhaust
gas heat recovery system?
· Causes of starting
air line explosion?
· Why tappet clearance
is needed?
· Describe crankcase
relief valve?
· What is starting air
overlapping
· What are the
difference between naturally aspirated engine and supercharged engine?
· What are the
functions of turbocharger inducer, diffuser, diaphram and labyrinth
seal?
· What is turbo charger
surging?
· Describe constant
pressure and pulse type turbo charger.
· What is the quantity
of lube oil in 4 stroke and 2 stroke engines?
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1.
What is glide?
2.
Describe bunkering procedure?
3.
How the tail shaft sealing arrangement is done?
4.
What are the measures you will take if the gland packing
leaks continuously?
5.
Why intermediate shaft is given?
6.
How will you take out the valves of air compressor?
7.
During dry dock what will you check in seachest valves?
8.
What are the safeties of air compressor?
9.
What is Heleshaw pump?
10.
Define valves and cocks and their functions
11.
Which valve is suitable for remote controlled operation and
why?
12.
What is rudder drop and jumping clearance?
13.
Where and why bursting disc is provided in an air
compressor?
14.
What are reasons of lifting up inter stages safety valves
in an air compressor?
15.
How to test compressor safety valve?
16.
How will you overhaul a globe valve?
17.
What are the reasons for a sticking gate valve?
18.
What is the theory of density correction?
19.
How does quick closing valve function?
20.
How do you specify pipe sizes?
21.
How do you select correct current setting for welding?
22.
What is the common size between different schedules of
pipes?
23.
Where telescopic feeler gauges are used?
24.
What are the safeties of cargo crane?
25.
What are the safeties provided on engine room overhead
crane?
26.
Where are wear rings used?
27.
What is hunting gear?
28.
Explain welding surface preparation?
29.
Draw a lip seal and how it works?
30.
Who will you align a pump and its motor?
31.
Sketch exhaust bellow?
32.
What are the testings carried out on steering gear during a
drill?
33.
Mention fresh water generator shell temperature, vacuum,
and other parameters?
34.
What is the significance of stern tube header tank?
35.
What are the advantages of four ram steering gear?
36.
Describe checks on fresh water generator during watch?
37.
What is the significance of greasing steering gear?
38.
What is reverse osmosis?
39.
What is purifier and clarifier?
40.
Discuss purifier operation?
41.
What are fuel oil testings done on board ships?
42.
What on board tests are done in lube oil?
43.
What is the correct procedure to collect lube oil for
testing?
44.
What is the temperature of fuel oil entering and leaving
purifier?
45.
What are the safeties of fresh water generator, steering
gear and oily water separator?
46.
Why purifier overflows?
47.
What is viscometer?
48.
What is the function of air compressor unloader?
49.
What is the function of expansion valve?
50.
How the unloader works in an ac compressor?
51.
Why fridge compressor is belt driven?
52.
How is the temperature of cold rooms maintained?
53.
What is he difference between air compressor and ac
compressor?
54.
What is critical temperature and pressure?
55.
What is latent heat?
56.
What is meant by short cycling in fridge compressor?
57.
Different types of pumps and where they are used?
58.
What is the discharge pattern of reciprocating
pumps and other pumps?
59.
What is jumping clearance?
60.
How many types of steering gear are there?
61.
Describe arrangement of stern tube?
62.
How stern tube cooling is done?
63.
How to take crank shaft deflection?
64.
Why the suction pressure of refrigeration plant and ac
plant are different?
65.
What is the function of rudder carrier bearing?
66.
How many types of fresh water generator are there?
67.
Why centrifugal pump has no relief valve?
68.
Arrangements for relieving shocks in the steering gear?
69.
What is bell mouth?
70.
What is interface of purifier?
71.
What are swash plate pumps?
72.
Why is oil coming from the water side of purifier?
73.
Explain the significance of heat treatment in steels?
74.
Hosing down procedure for engine room tank top?
75.
What are the precautions before entering inside an air
reservoir?
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1.
Why certain back pressure is maintained for purifier?
2.
What is the use of purifier breaks?
3.
Explain the functions of purifier centrifugal clutch?
4.
What are ALCAP purifiers?
5.
Explain the importance of gravity disc in a purifier?
6.
How will you manage your air compressor without automatic
unloader?
7.
How will you confirm that air compressor valves are not
leaking after overhauling?
8.
Why oil film is coated on a compressor air filter?
9.
Effect of air filter mesh size in an air compressor?
10.
What is the working principle of an air drier?
11.
Name five non metals used on board ships?
12.
Routine checks on a fixed foam fire fighting system?
13.
How many types of steels and brief their carbon contents?
14.
What is the material of safety valve?
15.
Define flash point, fire point, viscosity?
16.
How many types of propeller?
17.
What will you do if emergency alarm raise?
18.
What is the function of fire detector?
19.
What is saturation temperature?
20.
What is humidity?
21.
What is the material of cooler tubes?
22.
What is specific gravity?
23.
What is vacuum?
24.
What is meant by critical speed?
25.
What do you know about 'M' notices?
26.
What s the function of poker gauge?
27.
What s the function of lubricating oil?
28.
What is hydrostatic lubrication?
29.
What is inerting, purging and gas freeing in inert gas
system?
30.
What are fire man's outfit?
31.
What is cetane number and calorific value of a fuel?
32.
How will you buy a boiler?
33.
What is the formula of stress in longitudinal and
circumferential joint?
34.
Describe boiler starting procedure from cold?
35.
Why boiler water treatment is required?
36.
How many types of marine boilers are used on ships?
37.
What are the tests carried out for a low pressure boiler
water?
38.
What is your action on finding high chloride levels in a
boiler?
39.
What will you do if no water level in the gauge glass?
40.
How would you blow down a boiler gauge glass?
41.
What are boiler mountings?
42.
What will you check while watch on a boiler?
43.
What is allowable chloride content in boiler water?
44.
If the steam nozzle of the gauge glass is chocked then how
will you confirm water level?
45.
Why purge a boiler furnace?
46.
What is superheated steam?
47.
How many types of boiler safety valve?
48.
Describe boiler survey procedure?
49.
How to check alkalinity, acidity, chloride content in
boiler?
50.
Draw the lip clearance of safety valve?
51.
What is the difference between safety valve and relief
valve?
52.
What is corrosion, erosion, and abrasion?
53.
Comment on materials of boiler construction?
54.
Why and how soot blowing is done?
55.
Describe automatic combustion system in a boiler?
56.
Why flame failure alarm comes and what will be your action?
57.
When do you start the boiler circulating water pump?
58.
How will you know that EGB is leaking and how to arrest the
leak?
59.
How boiler safety valve is set?
60.
Show the calculation of safety valve area?
61.
What do you know about economiser?
62.
Describe setting of safety valve?
63.
What is steam hammering?
64.
What is manometer?
65.
What is steam trap?
66.
How will you prevent uptake fire?
67.
What is dry distillation?
68.
What action o be taken if oil is found in the cascade tank?
69.
What colour flame indicates efficient or poor combustion?
70.
What is Ogee ring?
71.
Where the boiler fusible plugs are used?
72.
What are the densities of boiler water and seawater?
73.
What is the diameter of safety valve?
74.
What is the purpose of blow down ring?
75.
Is there any arrangement for boiler safety valve draining?
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NAVIGATION FORMS AND CHECKLISTS
AC Generator
A 3 phase ac generator is called an
"Alternator". Like a DC generator, it also consists of two windings
namely, (1) Field Winding (2) Armature Winding.
However, unlike in a DC Generator, its
poles are on rotor and armature winding is on stator.
Field Winding
The field winding on poles requires DC
current which is supplied by using a pair of slip rings on the shaft and a pair
of stationary carbon brushes. The number of poles is always even. All the poles
are identical and symmetrically fitted on the rotor with alternate
polarities i.e., a "North" pole is followed by a
"South" pole which in turn is followed by another
"North" pole and so on.
Armature Winding
The stator is made up of thin laminations
of alloy. Laminated structure is used to reduce magnetic
losses and also to obtain convenience in the construction. These laminations
(also known as stampings) have been punched around the internal periphery to
produce slots. Copper windings are placed in these slots. It is known as
"Armature Winding" and "Stator Winding". It is a three
phase winding generally in 'star'. All the three terminals of the star connection,
including the fourth terminal the neutral
are brought out in the terminal box of the machine.
AC GENERATOR
Working
The generator is driven by its
engine in the correct direction at its rated speed (RPM). DC Field
current is then supplied to its field winding through the brush and
slip ring arrangements. The poles produce sufficiently strong
magnetic flux. Since the poles are rotating, the magnetic field is also
rotating. The armature windings in the stator windings cut the flux of the
rotating poles. Therefore electric power is produced in the stator winding.
Note that the frequency of the electric power is kept constant at 50 Hz (or at
60 Hz) by keeping the generator speed constant.
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