MANAGEMENT – ENGINE
REPUBLIC OF THE PHILIPPINES
DEPARTMENT OF TRANSPORTATION
MARITIME INDUSTRY AUTHORITY
STCW OFFICE
GUIDE QUESTIONNAIRES
for seafarers
The Annual Publication of Database of Questionnaires is mandated in Republic Act
10635 or the Act Establishing the Maritime Industry Authority (MARINA) as the Single
Maritime Administration Responsible for the Implementation and Enforcement of
the 1978 International Convention on Standards of Training, Certification and
Watchkeeping for Seafarers, 1978, as amended and International Agreements or
Covenants related thereto and its Implementing Rules and Regulations.
These sample questions have been reviewed and validated by our respective Board
of Examiners which may serve as a guide for the review of aspiring Marine Deck and
Engineering Officers, towards the successful completion of the Theoretical
Examination.
The following sample questions do not reflect the actual set of database of questions
given during the theoretical examination. Examinees are encouraged to study the
contained sample questions and probable answers as they are intended to give an
indication of the format and difficulty level of the theoretical examination.
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A Publication of the MARINA STCW Office
ML-Engine: COMPETENCE 2 - Plan and operations
No.
Questions
Choice A
Choice B
Choice C
Choice D
evaluate according to
their discretion, simply
by their ability to “tell”
when a candidate is
performing well
sign off the remaining
half of all skills to be
demonstrated based
upon the success of
the first half of the skill
demonstration
In order to assess each trainee in the performance of a
practical demonstration, the assessor should:
create a unique set of
subjective questions
for each trainee
refer to a checklist that
represents the skill
process as required on
board the vessel
spring force
2
A bendix drive starting motor disengages the drive gear from
the flywheel by:
rotating of the starting having the flywheel
cam
impart a torque to the
starter pinion
applying accumulator
pressure
A combustion control system, diaphragm-type, air volume
regulator receives its low pressure signal from the boiler:
windbox
casing
furnace
smoke pipe
3
14.08 kg/cm2
22.0 kg/cm2
34.5 kg/cm2
35.75 kg/cm2
4
A diesel engine indicator diagram measures 12.5 cm in length
and has an area of 22 cm2. What is the cylinder mean
effective pressure if the spring used has a scale of 1.25 mm
equals 1 kg/cm2?
A fuel oil settler is 35 feet 4 inches (10.7696 m) long, 25 feet
127,338.99
10 inches (7.8740 m) wide, and 19 feet (5.7912m) deep. The
bbls(20245.24 cubic
noon sounding indicated a level of 15 feet 2 inches (4.6228
meters)
m).The fuel oil meter read 6517 gal. (24669) at that time and
8911gal. (33732) at 1600. How many barrels / cubic meters of
fuel oil remained in the settler at 1600?
101,164.79
bbls(16083.87 cubic
meters)
3,031.99 bbls(482.05
cubic meters)
2,408.35 bbls(382.95
cubic meters)
A standard net barrel of petroleum products is:
42 gallons at 60°F
48 gallons at 70°F
50 gallons at 50°F
60 gallons at 100°F
A volume of one cubic foot would equal how many gallons?
5.48 gallons
6.48 gallons
7.48 gallons
8.48 gallons
An inline engine having a nine inch bore and more than eight
cylinders will:
incorporate the use of have three explosion
two explosion relief
relief valves
valves
have at least eight
not be required to
explosion relief valves have explosion relief
valves
Any air mixture whose dew point remains constant will also
have another unchanging property. Which of the following
properties will remain unchanged?
dry bulb temperature
wet bulb temperature
specific humidity
specific volume
Before using a boiler compressed air soot blower system, you
should:
reduce the boiler
pressure
lower the water level
decrease the forced
draft fan speed
drain the soot blower
pneumatic operating
lines
1
5
6
7
8
9
10
How many crankcase relief valves are required for a 13 inch
bore, eight cylinder in-line engine?
2
4
6
8
11
12
How much work would be accomplished if a 15 pound box
were raised to the top of a 25 foot platform?
15 ft-lb
25 ft-lb
40 ft-lb
375 ft-lb
13
If the air temperature increases while the atmospheric pressure have a greater
remains constant, what will happen to the air?
capacity to absorb
moisture
absorb less free
atmospheric moisture
become
give up moisture as
supersaturated at high condensation
relative humidity
If you were uncertain as to what type of gasket material to
install in a pipeline, you should:
turn the old gasket
check the ship’s plans leave the old gasket in make up the joint
over and install it again or manufacturer’s
and cover it with
without a gasket until
instructions
Permatex
you can check with the
chief
15
In a diesel engine cooling water system, a pH of 6.0 indicates
a/an.
slightly acidic condition slightly alkaline
condition
25 pounds (11.4 kg)
40 pounds (18.1 kg)
50 pounds (22.6 kg)
16
Industrial process and commercial CFC type refrigeration
15 pounds (6.8 kg)
equipment with annual leak rates of 35% or more, require leak
repair of the system if it contains a refrigerant charge of more
than what quantity?
1924 GPM
2027 GPM
2136 GPM
17
It requires 151 HP to operate a centrifugal pump having a
14.75 inch impeller at 1800 RPM, at a capacity of 2250 GPM
with a 218 foot head. If during an overhaul of the pump, the
impeller diameter is reduced to 14 inches, the capacity of the
pump operating at the same RPM would be:
the same as it was
prior to the pump
being overhauled
Leaking suction valves in a refrigeration compressor are
indicated by which of the following?
higher than normal
suction pressure
lower than normal
suction pressure
lower than normal
evaporator
temperature
noticeable increase in
compressor noise
Most marine main boilers are designed to produce:
superheated steam
only
saturated and
superheated steam
saturated steam only
superheated and
supercritical steam
On board supply vessels, a centrifuge is normally used to
purify.
cooling water
fuel oil
sea water
diesel intake air
20
On tank vessels equipped with power operated cargo tank
valves, the type of power actuator most commonly used is:
hydraulic
electric
steam
diesel
21
24
44
64
84
22
One cubic foot of salt water would equal approximately how
many pounds?
14
18
19
overtreatment of water neutral condition of
water
Piston compression rings used in a diesel engine function to:
transfer heat from the
cylinder to the piston
scrape oil from the
sides of the piston
seal the combustion
space from the
crankcase
prevent any piston
contact with the
cylinder liner
Power is defined as the:
rate of doing work
amount of force
needed to overcome
friction
amount of work
accomplished
distance through which
an object is moved
The best conductor of heat in a marine boiler is:
steel
water
steam
brick
28 minutes
32 minutes
36 minutes
23
24
25
26
27
The capacity of a fuel oil transfer pump is 100 gpm. If a fuel oil 24 minutes
setting tank measures 6 feet by 6 feet by 12 feet high, how
long must the pump run to fill the tank to 11 feet, if the tank
presently holds 2 feet of fuel?
The firing range of a steam assisted fuel atomizer is regulated
to cope with changes in the steam demand by varying the:
fuel oil return pressure fuel oil supply pressure steam atomization
temperature
shape of the atomized
fuel cone
The heat required to change a substance from a solid to a
liquid while at its freezing temperature, is known as the latent
heat of:
fusion
vaporization
condensation
sublimation
The low pressure cutout switch settings vary with the
5" Hg
refrigerant used and the temperature application. If the low
pressure cutout switch for a particular application is set with a
cut- in pressure of 5 psig, what would be the cut-out pressure if
the differential is 7.5 psig?
0 psig
2.5 psig
12.5 psig
The maximum temperature rise of oil passing through any
reduction gear set, or bearing, should not exceed:
50°F (27.8°C)
70°F (38.9°C)
90°F (44.5°C)
The ratio of the weight of moisture contained in a given volume absolute humidity
of air, to the weight of moisture that the same sample would
hold if saturated, is called what?
relative humidity
specific humidity
total humidity
The refrigerants referred to as CFC’s are considered to be
what?
fully halogenated
partially hydrogenated partially halogenated
fully hydrogenated
32
The size of the discharge ring used in a lube oil purifier is
determined by the oil’s:
viscosity
moisture content
sediment content
specific gravity
33
200°F
212°F
300°F
315°F
34
What is the lowest permissible flashpoint of the oil used in a
hydraulic valve actuating system that operates at 145 psi? (46
CFR)
28
29
30
31
30°F (16.7°C)
35
36
When calculating the indicated power developed in a diesel
4500 kg-meters per
engine cylinder, 1 horsepower is equivalent to “33,000 footminute = 1 HP
pounds per minute”. What conversion factor would be used if
the values are based on metric “kilogram- meters per minute”?
5500 kg-meters per
minute = 1 HP
When preparing to light off a cold boiler, the fuel oil should be
recirculated until it is:
thoroughly cleaned by viscous enough for
the fuel oil strainers
rapid pumping
heated sufficiently for
proper atomization
11000 kg-meters per
minute = 1 HP
16500 kg-meters per
minute = 1 HP
entrained with air
bubbles
37
Which of the conditions listed represents the greatest effect of Keeps the refrigerated Reduces the efficiency Increases the load on
excess frost accumulation on evaporator coils in a refrigeration space cooler.
of the plant.
the compressor.
system?
Has no effect on the
system.
Which of the following terms is used to indicate that the
addition of heat will result in a temperature change?
Latent heat
Sensible heat
Sublimation heat
Critical point heat
38
Which of the general advantages listed does the electrical
pyrometer have over the mechanical pyrometer?
When heated, it will
move proportional to
the amount the metal
has lengthened or
expanded.
The pointer associated
with the pyrometer
scale can be made to
also measure engine
RPM.
It can be utilized in
exhaust manifolds and
heat exchangers
interchangeably.
It can indicate
temperature at a
distant point from the
source of heat.
39