13 What kind of tool is shown top left and for what is it used?. 16 What kind of tool is shown right bottom and into what does it A A bar wrench / It fits into exhaust gas pipe fastening
Trang 1No 1 What is the fastening device shown at the left side of the
Vernier caliper is the correct name
No 3 What is the accuracy of the measuring instrument shown on
the top left ?
Trang 2No 4 Suppose you need to draw a circle of 186 mm diameter on
metal or on a packing sheet How would you do this using the
compass shown top centre ?
A Measure 186mm on packing, draw 2 lines through the centre
> B Set opening of compass legs to 93 mm using a steel ruler
C Indicate straight line with points 0mm, 93mm and 186mm on
packing
D Project first a hexagon on packing or steel plate
If you are to project a circle of "X" mm on a plane you are to adjust the opening of the compass legs at X : 2 'You do this
by setting the leg opening on a steel ruler and actual adjustment is done by adjusting the screw on the side of the
No 5 What is the accuracy of a micrometer shown top right ?
A 0.1 to 0.2 millimetres
B 0.1 to 0.5 millimetres
> C 0.01 to 0.005 millimetres
D 0.05 to 0.01 millimetres
Option <Option3> is correct 0.01 to 0.005 mm corresponds
to between 1/100 and 1/200th of one millimeter.
No 6 What is the measuring device shown at the bottom ?
A A tracing instrument
> B A right angle plane tracer
C An angular tracer
D A 90 degree angle projector
Option <Option2> is correct It is used to project 90 degree lines in relation to the side of the metal against which the measuring device is held.
Trang 3No 7 What is the measuring device shown in the top and what is it
used for ?
> A A thread gauge To measure thread size on bolts and studs
B A bolt thickness gauge To measure the size of bolts
C Thread thickness gauge Measure clearance of bolts and nuts
D Thread wear down gauge Measures wear-down on bolts /
thread to see which one is matching.
No 8 What measuring device is shown in the bottom left corner ?
No 9 What is the purpose of the calliper shown in the bottom left
A Measuring piston ring gaps
B Measuring fuel pump lifts
C Measuring inside diameters of hydraulic pipes
> D Measuring inside diameters or gaps
This is an adjustable INSIDE caliper The spring blade on top forces the legs outward By releasing the screw after the caliper is inserted in the bore or gap the legs will slide against the inner surface of the item which is to be
Trang 4No 10 What is the measuring device shown in the right bottom corner ?
A A flange calliper
B A pipe calliper
C An adjustable pipe calliper
> D An adjustable outside calliper
This is an adjustable OUTSIDE caliper used to measure diameters or outside measurements Its spring blade on top forces the legs outwards but the force is caught by the retaining screw.
No 11 How will the tool shown at the top be powered if it is to be
used on tankers ?
A By battery power, 12 Volt maximum
B By AC power 110 Volt, 60 Hz maximum
> C By compressed air 8.5 kg/cm2 maximum
D By compressed air 3.5 kg/cm2 maximum
No flexible wiring or electric tools are allowed to be used outside the engine room on tankers A powered tool is therefore to be driven by air or water The air pressure is the ship's working air of 8.5 kg/cm2 maximum.
No 12 For what are RECOIL-LESS HAMMERS used ?
> A To assemble tight fitting parts
B To chisel deep grooves in metal
C To hammer on ring spanners
D To test the foundation bolts of engines
They are used in the assembly of tight fitting machinery or motor parts, e.g to fit the end covers of an electric motor in place or to fit a tight sleeve on a shaft etc They are usually lead shot hammers, their weight ensuring that there is no
Trang 5No 13 What kind of tool is shown top left and for what is it used ?
A A ratchet spanner / Used on main engine piston crowns
B A torque spanner / Used on foundation bolts
C A forged torque spanner / Used to hammer nuts
> D A forged ring spanner / Used to be hammered by a
hammering nuts loose or fast by using a sledgehammer or heavy hammer for smaller size nuts
No 14 What is the tool shown upper right ?
A A bearing cap-wrench
B A purifier assembly wrench
C An orifice removal wrench
> D A hydrant wrench
This is a hydrant wrench The pin is inserted in the round slot of the hydrant cap or in the round slot of ANY retaining cap and torque applied to open or to close as required Used
on hydrants, purifiers, telescopic piping etc They come in
No 15 What tool is shown bottom left and for what is it used ?
> A Articulated socket wrench/ Out of centre extension
B Square ratchet wrench / 45 degree out of line wrench
C Flexible socket spanner / For sunken nuts removal and fitting
D Flexible ratchet wrench / As extension for ratchets
This is the flexible out of centre handle of an articulated socket wrench.
Trang 6No 16 What kind of tool is shown right bottom and into what does it
A A bar wrench / It fits into exhaust gas pipe fastening bolts
B An angle wrench / It fits into cylinder cover plugs
> C A socket bolt wrench / It fits into Allen Bolts (Allen keys)
D A torque wrench / It fits over nuts
This is a socket bolt wrench or also called an "ALLEN" key It fits into the heads of "ALLEN" bolts.
No 17 What kind of wrench is shown upper left ?
No 18 What kind of tool is shown upper right ?
A A Stilson wrench
B A pipe wrench
C An adjustable nut wrench
> D An adjustable vice grip wrench
This is an adjustable vice grip wrench Used on piping or worn nuts etc The force applied to the surface by the claw
is not in proportion to the torque applied as is the case with the Stilson wrench
Trang 7No 19 What is the tool shown bottom left ?
> A A ratchet spanner
B A flexible ring spanner
C A forged flexible star-spanner
D A torque ring spanner
This is a ratchet spanner The ring is fitted inside a ratchet ring It comes in various sizes (Spanner sizes are not interchangeable)
No 20 What kind of tool is shown top right ?
A A star spanner, double forged
B A mechanic's spanner
C A common bolt spanner, double forged
> D A double ended open jaw spanner
This is a double ended ring spanner preferably used on all easily access able nuts.
No 21 What is the tool shown top left ?
A A flat mechanic's double spanner
> B A double ended ring spanner
C A double flat spanner
D A forked double spanner
This is a double ended open spanner, used where no space exists to use a ring spanner or where a ring spanner cannot
be lifted over the nut or nipple.
Trang 8No 22 What kind of tool is shown bottom left ? How can it be Tools6a.BMP
A A star spanner / Extended by torque bar
B An open spanner / Cannot be extended
C A double hexagon spanner / Extended by rod
> D A single ended ring spanner / Extended by a pipe or tube
An additional torque can be applied on this spanner by sliding a pipe over it to obtain extra leverage.
No 23 What kind of tool is shown bottom right bottom ?
> A A combined open ended spanner and socket wrench
B A flat ratchet spanner
C A socket wrench forked spanner
D A single ended forked ratchet wrench
This is a combination spanner On one side is the spanner open ended, on the other side is it a socket wrench of the same size.
No 24 What kind of assembly does the upper left piece and the
upper centre piece make ?
> A A socket wrench assembly
B A ratchet spanner
C A ratchet lever assembly
D A ratchet torque assembly
The socket wrench consists of the socket and the lever as shown.
Trang 9No 25 What kind of tool is shown on the bottom left corner of the
picture and when is it used ?
A A rod spanner / For cylinder cover tightening
B An extended spanner / When the nut is found frozen
C A hexagon fork spanner / To apply extra force when
tightening
> D A pinchbar spanner / When there is no side space available
The pinch bar spanner is used when there is no space available on the side or around the nut where a conventional spanner cannot be used.
No 26 What kind of tool is shown bottom centre ?
A An adjustable pocket spanner
No 27 On what equipment should the wrench shown bottom right be used ?
A On bolts and nuts
B On broken studs
> C On large diameter pipes and shafts
D On electric motor couplings
A chain wrench is used to grip on the circumference of piping and rods, or other components that are circular.
Trang 10No 28 The tools shown here are .?
No 29 What is the tool shown top left called and by whom is it
mostly used ?
A Welding rod pliers / fitters and welders
B Manometer curved pliers / engineers
C Instrument long nose pliers / Automation and control
engineers
> D Curved long nose pliers / Electricians
The name indicates what is actually seen A curved long nose pliers is for general use and not used by anybody specifically, however the long nose pliers shown in the picture have INSULATED hand grips, indicating that it is an
No 30 What is the tool shown top right and by whom is it used ?
A Combination pliers / For general use
B Electrician's pliers / By the electrician
C Mechanical pliers / By the engineers and fitters
> D Flat nose pliers / By the electrician
As shown these pliers have flat noses and are called flat nose pliers It is a tool for general use However, the picture shows that the pliers have insulated handgrips and therefore
it is an ELECTRICIAN'S tool Most pliers of this type do not
Trang 11No 31 What is the tool shown bottom left and by whom is it used ?
A Inside circlip pliers / By engineers
B Outside circlip pliers / By engineers
> C Round point pliers / By electricians
D Eye nose pliers / By the electrician
These are round point pliers, a tool for general use However
on the tool shown there are the insulated handgrips, indicating that it is an electrician's tool.
No 32 What kind of tool is shown bottom left ? What is its use ?
A Mason's chisel / To break up cement boxes
B Blacksmith's chisel / To cut steel bars and rods
C Hot chisel / To cut bolts and nuts
> D Cold chisel / A general purpose cutting and splitting tool
The cold chisel is a general purpose tool used for cutting and splitting any material softer than the nose of the chisel The chisel nose is generally hardened.
No 33 If the welding torch and the oxygen/acetylene pressure
regulators are fitted in the engine room workshop, to what
should they be connected ?
A The oxygen and acetylene bottles
> B Oxygen and acetylene pipe lines
C Gas bottles depending the material to weld
D Safety valves
No Gas bottles are allowed to be stored in the engine room
If gas welding is available on board, the bottles are stored in
a well ventilated open compartment venting to the upper deck and pipe lines with non-return valves are fitted leading
Trang 12No 34 When igniting the welding torch, how would you proceed ?
A Open acetylene, ignite, than adjust flame with oxygen
B Open oxygen and acetylene, than ignite
C Open acetylene, ignite, open oxygen than adjust flame
> D Ignite whilst controlling acetylene, open oxygen, adjust flame
You are to control the acetylene whilst igniting At all times you need your flame to be under control Once there is a controlled acetylene flame you should open the oxygen, then adjust the flame to the desired intensity Never open
No 35 What is the gas welding equipment shown right side ?
A A heavy duty welding torch
No 36 How should oxygen and acetylene bottles be transported ?
A In a safety net, well secured
B In a special provided stand with clamps
C With the caps secured by gas-tight tape
> D In an upright position
Regulations require gas bottles be transported in upright position.
Trang 13No 37 Depending on the plate thickness to be cut you should
increase ?
A the acetylene flow
B the oxygen flow
C the oxygen and the acetylene flow
> D the nozzle size
By increased capacity requirement (increased plate thickness) it is necessary to increase the nozzle capacity by using a bigger size nozzle in the cutting torch.
No 38 If you are welding in the workshop, you must ensure in
advance that the bridge is told and that
A the Chief Engineer is informed as well
B the emergency fire pump is started
C the fire extinguishers of the engine room platform are not
expired
> D the fire alarm for the workshop platform is switched off
The duty engineer is to be informed on all occasions, not the Chief engineer The bridge is to be informed and the fire detection loop covering the workshop is switched off, as the fire alarm will be activated by the smoke produced, and
No 39 What is the function of this hydraulic stressing tool when
fastening and unfastening bolts/nuts on an engine ?
A To fasten or unfasten the nut
B To press the part to be fastened together or down so that the
nut can be tightened by hand
C To apply pressure on cylinder head or bearing so that the
bolts/nuts can be tightened by hand
> D To elongate the bolts at required stress value so that the nuts
can be tightened to the position to ensure correct The bolts or studs are elongated by pre-tensioning to the
hydraulic pressure released This is the correct method for pre-tensioning.
Trang 14No 40 The "scleroscope" is used to determining
A the "hardness " of a metal
B the "thickness" of a metal
C the "brittleness" of a metal
> D the existence of cracks in metal
No 41 Which of these four screws is a fillister head screw ?
> A No 1
B No 2
C No 3
D No 4
No 42 What type of screw is No 2 ?
A A hexagon head screw
B A button head screw
> C A flat head screw
D A fillister head screw
Trang 15No 43 What type of screw is No 3 ?
A A button head screw
> B A hexagon head screw
C A fillister head screw
D A flat head screw
No 44 What type of screw is No 4 ?
A A hexagon head screw
B A fillister head screw
C A flat head screw
> D A button head screw
No 45 For cutting hard materials, metal saws with
blades should be used ?
A large pitch
> B small pitch
C sharp angle teeth
D dual angle teeth
Option <Option2> is correct Saws with small pitch must be used (8 teeth per cm of length) Also use a small pitch saw for cutting small strip objects, so that several teeth are cutting at the same time.
Trang 16No 46 When starting to tap a hole, how is the process checked for
No 47 What general name is given to files which remove maximum
metal in the shortest time?
Trang 17No 49 When fitting new bottom ends to a small diesel engine, the
bottom end bolts have no locking devices Which of the
following should be fitted
No 50 The sketch shows the rollers for a pyramid rolling machine
Which is the idler?
> A No.1
B No.2
C No.3
D No.4
1.1.3.13 Forming - See sketch
No 51 What device is fitted to prevent component gases mixing in
hoses?
A A relief vale
B A stop valve
C A by-pass valve
> D A hose check valve
1.1.3.7 Principles of Gas Welding - i.e Non-return valves.
Trang 18No 52 The diagram shows four types of machine screws Identify the
cheese head screw
A No.1
B No.2
C No.3
> D No.4
1.2.2.5 Screw Thread Fasteners - See diagram
No 53 Identify the powered hand tool No 2 ?
A Drill
B Grinder
C Screwdriver
> D Input wrench
1.2.1.3 Powered Hand Tools - See sketch
No 54 Perspex is an example of a thermoplastic, How is this best
heated prior to bending?
A Heat in an oven
> B Heat in boiling water
C Flame heat
D Hot air stream
1.1.3.14 Bonding Plastics - Heat for 20 minutes.
Trang 19No 55 It is required to make a drip tray What machine would be
Lightly tempered very sharp Hence, lightly tempered allows for finishing off
after grinding with an oilstone.
No 57 A method of joining two plastics together is by solvent
welding What is this process?
A Application of a thin film of adhesive to joining surfaces
> B Adhesive is applied and dissolves the plastic material being
joined
C A heating tool is applied with pressure to required join
D A high frequency current is applied to clamps at the join
Trang 20No 58 When gas cutting a mild steel plate, what does the size of
nozzle used depend upon?
> A Thickness the of plate
B The gases used
C Impurities in the material
D Gases remaining in the cylinder
No 59 The sketch shows a partially completed knocked up joint
made from 0.5 mm plate Which direction of bending
completes the joint?
No 60 A short box girder is fabricated from 8 mm steel plate What
edge preparation is required for No.2 ?
> A None
B Single bevel Closed corner
C Double bevel closed corner
D Double U
1.1.3.8 Welded Joints and Common Faults - NB Will not give a square corner See sketch
Trang 21No 61 Welding fumes can be dangerous When welding in the
workshop how is welding rendered safe?
A By respirator
B By extraction
> C By ventilation
D By extractor welding gun
1.1.3.5 Safety and Health when Welding - The good ventilation will ensure safe working practice.
No 62 Which set of equipment is required to mark out the keyway of
No 63 A blind hole in a valve casing requires to be tapped 12 mm
Which tap(s) would be used?
A Plug
B Second and plug
C Taper and plug
> D Taper, second and plug
1.2.1.2 Hand Tools - The taper would ensure squareness; the second, the thread had started; the plug that the thread goes to bottom of hole.
Trang 22No 64 For the fillet weld shown, what is the throat length?
No 65 A crankcase weld requires detailed inspection while on
passage How would this be carried out?
Trang 23No 67 When bonding together two metal components, what is the
correct sequence?
A Clamp together
Add activator to epoxy resin
Apply to edges removing surplus
B Add activator to epoxy resin
Add activator to epoxy resin
> C Clean and rough surfaces
Add activator to epoxy resin
Apply to surfaces and Clamp together
D Clean and rough surfaces,
Add activator to epoxy resin 1.2.1.7 Adhesives and Bonding - Glue line is 0.02 to 0.2
Apply to surfaces and Clamp together only when tacky mm and curing time may be up to 12 hours.
No 68 When gas welding, which is the most likely cause of a serious
A Touching hot metal
B Flying sparks
C Leaving torch on floor
> D Not extinguishing when finished
1.1.3.5 Safety and Health when Welding - Always extinguish when not welding.
No 69 For the square pyramid float component shown, which is the
Trang 24No 70 Which of the materials listed can be cut using an oxygen fuel
B It will not show if penetration is correct
C It will not indicate blow holes
> D It gives an indication only
No 72 When working with bonded resins what is their useable pot life?
> A 2 to 3 minutes
B 4 to 6 minutes
C 9 to 10 minutes
D 11 to 14 minutes
Trang 25No 73 What general name is given to files used for finishing?
Trang 26No 76 What is the plate thickness limit for hand-operated folding
No 77 Which system uses a tungsten electrode, causing an arc
between itself and the metal to be cut?
A Electric arc cutting
B Molten arc cutting
C Arc cutting
> D Plasma arc cutting
No 78 A repair to a compressor requires a plate of the form illustrated
to be designed Which illustration is dimensioned to be the
Trang 27No 79 The speed and feed for a 20 mm diameter reamer would be?
A Same as a drill
B 75% less than a drill
> C 50% less than a drill
D 25% less than a drill
1.2.1.5 Drilling Machines - Usually less than 50% with copious supply of cutting fluid Left hand spiral prevents cutting ahead of finish.
No 80 A scriber should not be used for marking out?
A When material is copper
> B When material is to be bent
C When material is to be hot worked
D When material is plastic
1.2.1.1 Marking Out - Scribing is metal removal and may lead to cracking.
No 81 Hoses are easily damaged and require special care for long
life, but what are they reinforced with?
Trang 28No 82 The diagram shows four types of socket head screws Identify
the socket shoulder screw
A No.1
> B No.2
C No.3
D No.4
1.2.2.5 Screw Thread Fasteners - See sketch
No 83 What dictates the size of drill hole required prior to cutting an
> A The core diameter
B The outside diameter
C The thread form
D The thread pitch
No 84 When welding at a bench, which list of equipment would be
Trang 29No 85 Which of the following effects could be reduced if hand
powered tools were used?
> A Outside bend may fracture
B Inside bend may fracture
C Outside bend may be scuffed
D Inside bend may be polished
No 87 Which correctly identifies a full acetylene cylinder ?
A 170 bar right hand thread black colour
B 170 bar right hand thread blue colour
> C 15 bar left hand thread maroon colour
D 7.5 bar left hand thread red colour
Trang 30No 88 Which material is difficult to weld due to porosity?
A Cast iron
B Low carbon steel
C Medium carbon steel
> D High carbon steel
1.1.3.6 Principles of Electric Arc Welding - Porosity caused
by oxidation of carbon.
No 89 When out of use temporarily, how should the workshop
surface plate be stored?
A Covered with grease
> B Covered with a wooden cover
C Wiped with an oiled rag
D Covered with a cloth sheet
No 90 A 1.3 m long slot is to be marked off on the floor plate but only
a 300 mm straight edge is available How is this overcome?
A By using a cardboard template
B By using a piece of wood
C By using a length of tape
> D By using a chalk line
Trang 31No 91 What is the softening temperature for PVC?
A 100°C
B 105°C
C 110°C
> D 115°C
No 92 Which type of examination reveals pin holes, slag inclusion
and lack of fusion?
A Dye penetrant
B Visual
C Fluorescent penetrant
> D Macroscopic
No 93 What is a trammel used for?
A For cutting out joints
> B For scribing large circles
C Substitute if dividers are unavailable
D For marking off pipes
1.1.3.10 Plate work marking out - i.e Larger than possible by dividers.
Trang 32No 94 A frustrum of a hexagonal pyramid is shown Which drawing
goes to the left of the figure in third angle projection?
> A No.1
B No.2
C No.3
D No.4
1.2.2.2 Linework - See sketch
No 95 What is the effect of low pressure cutting oxygen?
A Combustion will not occur
B Melting point will not be reached
> C The melt will not be blown out
D The cut will be ragged at edges
1.1.3.11 Thermal Cutting - Oxidation is too slow.
No 96 The Vernier protractor gives an angular accuracy of?
Trang 33No 97 Dimensions are read from the bottom of the drawing but if this
is not possible what is the next choice?
A Turn drawing clockwise 45 reading from RH side
B Turn drawing anti-clockwise reading from RH side
C Turn drawing anti-clockwise reading from LH side
> D Turn drawing clockwise reading from RH side
1.2.2.9 Dimensioning - Reading from right hand side.
No 98 After sharpening a twist drill, which points are the most
Face of drill 1.2.1.5 Drilling Machines - The answers are all relevant
Ensure no rough grinding marks otherwise errors will occur.
No 99 When fitting a blade into a hacksaw, which direction should
the teeth be pointing relative to the handle?
A Towards the handle
B Towards if blade is fitted at 90 degrees to normal
C Towards if blade is fitted at 180 degrees to normal
> D Away from the handle
Trang 34No 100 In the following gas flame temperatures, which is the
No 101 During a plasma cutting process the workpiece was not totally
penetrated What would be the most likely problem?
> A Speed of cut too high
B Speed of cut too low
C Current is too high
D Metal is too porous
No 102 What is shown in No 1 ?
A Small circle guide
Trang 35No 103 How does the brake press differ from the other forming
machines?
A Uses rollers
> B Uses male and female formers
C Can pierce only
D Can crop only
No 104 When using third angle projection, viewing the component from
x, which drawing will be above the front elevation?
A A
B B
> C C
D D
1.2.2.2 Linework - See sketch
No 105 A flashback arrester has been triggered Which is the correct
sequence to follow after this event?
A Ascertain cause of activation
Clean, if necessary
B Clean, if necessary
Open up flashback arrester
Ascertain cause of activation
> C Ascertain cause of activation
Open up flashback arrester
Clean, if necessary
D Check equipment
Open up flashback arrester 1.1.3.7 Principles of Gas Welding - Always find out why it
Ascertain cause of activation
Trang 36No 106 When self-secured joints are to be made, which tool is most useful?
A A press
> B A folder
C Tin snips
D A rubber headed hammer
No 107 Which table best describes the flexible hacksaw blade?
A Only teeth hardened
Overheats unless liquid cooled
B Only teeth hardened
Easily broken if misused
Has a long life
C Only teeth hardened
Easily broken if misused
Overheats unless liquid cooled
> D Only teeth hardened
Not easily broken
Has a long life
No 108 If a gas pressure gauge is over-pressured and bursts, what
feature minimizes damage?
> A The flexible back
B A relief valve
C A bursting disc
D Auto shut off valve
Trang 37No 109 The sketch shows the two scales of a Vernier caliper What
degree of accuracy will a measurement have?
A 0.01
> B 0.02
C 0.03
D 0.04
1.2.1.4 Measurement - See sketch
No 110 When two pieces of metal at right- angles are welded together,
what weld is used?
C Slow temperature rise
D Low velocity jet
Trang 38No 112 Why is a high pressure blow pipe unsuitable for use in a low
A The nozzle sizes are different
B The oxygen pressure differs
C The acetylene pressure differs
> D Both gas pressures must be equal
1.1.3.7 Principles of Gas Welding - In low pressure system, acetylene supplied at low pressure and hence induction system needed.
No 113 The engine room workshop carries different types of hacksaw
blades Which blade should be used to cut sheet metal?
Trang 39No 115 What type of ball- bearing is shown in the illustration?
A Shallow groove
B Two-way thrust
C Heavy duty
> D Deep groove
No 116 If two pieces of metal are welded together while laying in the
same plane, this is known as?
A A lap weld
B A corner weld
C A fillet weld
> D A butt weld
No 117 Which table would give the best checklist following an arc
welding process, checking for:
Trang 40No 118 In the system of limits and fits shown, on what basis has the
drawing been made?
A Interference fits
B Shaft basis fits
> C Hole bases fits
D Clearance fits
1.2.2.10 Limits and Fits - See sketch
No 119 A white metal lined bearing is to be fitted on to a shaft Which
combination would be used?
A Use a flat scraper with engineer's blue on bearing
B Use a flat scraper with engineer's blue on shaft
> C Use a half-round scraper with engineer's blue on shaft
D Use a half-round scraper with engineer's blue on bearing
1.2.1.2 Hand Tools - The engineer's blue gives the high spots and these would be removed until an even distribution was apparent.
No 120 For the fillet weld shown, what is the throat length?