M6 QZS recognized

1.
2.
3.
4.
S.
6.
Low carbon steel contain
a.
0.10 to 0.30 percent
b
0.30 to O.SO percent
c.
O.SO to l .OS percent
Medium carbon steel
a.
0.1 O to 0.30 percent
b.
0.30 to O.SO percent
c.
O.SO to l .OS percent
High carbon steel contain carbon
a)
0.1 O to 0.30 percent
b)
0.30 to O.SO percent
c)
O.SO to 1.0S percent
Sheet forms is used for secondary structural stressed structural parts
a)
Low carbon steel
b)
Medium carbon steel
c)
High carbon steel
.
increases the hardness. tensile strength, and elastic limit of steel without appreciably decreasing the ductility
a)
Nickel
b)
Chromium
c)
Stainless
Type of steel has practically replaced carbon steel in the fabrication of fuselage tubing, engine mounts, landing gears, and
other structural parts.
a.
Cr-vd
b.
Cr-mb
c.
Stainless steel
7. Al is vital to aviation because
a)
High strength to weight ratio
b)
Ease of fabrication
c)
Its light weight
d) All the above
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8.
9.
6xxx indicate
a.
Mg and SI
b.
Si and Cu
c.
Other element
7xxx indicate
a) Zn
b)
Mg and Si
e)
Other element
1 O. .
is used for making compressor disk, spacer rings, compressor blades and vanes. through bolts, turbine housing and
lines, and miscellaneous hardware for turbine engine.
a)
Al
b)
Tl
c)
Cr-mb
11. Beryllium Cu physical properties can be Inc by
a)
Heat treatment
b)
Stress relieving
c)
Full annealìng
12. Muntz metal composed of
a)
40% Cu and 60% zinc
b)
60% Cu and 40% zinc
c)
60% brass and 40% Cu
13. Alloy which content major percent of Ni
a)
Muntz metal
b)
Red Brass
c)
Monel
14. Cold water quenching
a)
80 degree F
b)
85 degree F
c)
105 degree F
15. Heat treatment of ti includes
a)
Relief of stresses set up during cold forming or maching
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b)
Annealing after hot working or cold working
e)
Thermal hardening to improve strength
d)
ALL
16. Second digit indicate specific alloy
a)
Modification
b)
Alloy type
e)
Original alloy
17. Casting produce metal flowing under the gravity
a)
Permanent casting
b)
Sand casting
e)
Both
18. If the carbon is added to Iron, in percentage ranging upto approx
a)
l.05%
b)
1%
c)
2%
19. Steel which is adaptable for welding
* 20.
21.
a)
Molybdenum
b)
Cr-mb
c)
Cr-vd
Which of them is frequently affected by corrosion
a)
lxxx
b)
2xxx
c)
3xxx
d)
4xxx
Formula of cementite
a)
Fe3 C
b)
C2 Fe
e)
C3 Fe
d)
Fe2 e
22. MTCS for quenching medium (High to low)
a)
Brine > Oil >Water> Air
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b}
Water> Brine> Oil > Air
e)
Brine > Water > Oil > Air
d}
This is typical saying
23. Which of method is used to check hardness of the steel
a)
Spark test
b}
lzod
e)
Bending
d}
None of the above
24. 4XXX series major alloying element
a)
Cu
b)
SI
e)
Mg
d}
Si-Mg
25. Which Is used for structural member in the vicinity of compass
a)
Monal
b)
lnconnel
e)
K Monel
26. Cyaniding is
a)
Heat treatment process
b)
Case hardening
e)
Annealing
27. Pressing and hammer comes under
a)
Forging
b)
Swaging
e)
Rolling
d}
Extrusion
28. All alloy process
a)
SHT
b}
PHT
e}
Both
29. Fatigue test
a. lzod And charpy
1
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b. Rotating beam and cantilever
c. None of the above
30. Izad and charpy test determine
a)
Fatigue test
b)
Impact test
c)
Hardnes
31. Rotating beam or rotating cantilever test
a)
Hardness
b)
Impact test
c)
Fatigue test
32. Radiography is non-destructive
method of locating cracks by means of
a)
Alpha and beta ray
b)
Alpha, beta and gamma ray
c)
X - ray and gamma ray
33. Hardness tester uses for non ferrous material
a)
Rockwell
b)
Brinell
c)
Barcoal tester
34. Which method is used for hardness testing method
a)
Izad
b)
Rotaing Beam
c)
Vickers
d)
None of the above
35. What is the dia of the bail penetrator used in the Rockwell testing
a)
1\16 inch
b)
1\Binch
c)
1\32inch
36. What is angle of square base pyramid used in Vickers test
a)
120 degree
b)
145 degree
c)
136 degree
37. Fatigue limit is
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a)
0.2 x ultimate
b)
0.5 x ultimate
c)
0.9 x ultimate
38. Bolts and bushing are fitted in aircraft structure
a)
Loosely
b)
Snugly
c)
Tightly
39. Rockwell tester is used for the
a)
Hard material
b)
Soft material
c)
Soft and Hard of all shapes
40. Cd plating carried at
a)
Low voltage not exceeding 12 volts
b)
High voltage not exceeding 12 volts
c)
Low voltage exceeding 12 volts
41. Thickness of the Cd plating deposit is dependent upon the
a)
Time
b)
Current density
c)
Both
42. Sherardizing Is done
a)
Cd 700 degree F
b)
Zinc 700 degree F
c)
Cd 1400 degree F
d)
Zinc oxide 700 degree F
43. Taper ration of wood grain Is
a)
4:1
b)
12:1
c)
8:1
d)
21:1
44. Each sheet of thin wood is known as
a)
Plywood
b)
Veneer
l
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e)
Brich
45. Which of the following is all purpose glue in aircraft construction
a)
Caseìn Glue
b)
Blood Albumin Glue
c)
Alkaline
46. ..
Phenolic Glue
is the direction along the length of the fabric
a)
Warp
b)
Weft
c)
Ply
47
is used over fabric and under the rib stitching to prevent the stitching cord from cutting through the fabric
a)
Surface tape
b)
Reinforcing Tape
e)
Cello Tape
48. ..
the suction on the upper surface of the wing from the fabric to the ribs which, in turn, carry loads Into main wing
structure
a)
Sewing thread
b)
Rib lacing Cord
e)
Reinforcing Tape
49
is the finishing tape that Is doped over each rib to seam to cover the stitching
a)
Surface tape
b)
Reinforcing
c)
Linen thread
50. ..
Tape
used for cross-bracing
a)
Reinforcing Tape
b)
Rib Lacing Cord
e)
Surface Tape
51. ..
ribs and for binding
no. of process which increase the elasticity and strength and reduce the tackiness of rubber like material
a)
Calendering
b)
Vulcanizing
e)
Unvulcanizlng
52. Cannot be reformed
a)
Thermosetting
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b)
Thermoplastic
e)
Both
53. Annealing of steel is
a)
Soft, ductile but does relieve stress and strain
b)
Soft, ductile, relieve stress only
e)
Soft, ductile, relieve strain only
d)
Soft, ductile, relieve stress and strain
54. Which has no softening effect upon heating
a)
Thermoplastic
b)
Thermosetting
c)
Synthetic Rubber
55. Which has low water absorption rate and good resistance and low temperature
a)
Natural rubber
b)
Butyl rubber
e)
Buna-S
56. Rubber used with phosphate ester hydraulic fluids (Skydrol), Siiicone fluids, gases, Ketones and acetones
a)
Natural rubber
b)
Butyl rubber
e)
Buna-S
57. A O-ring designate specifically for the use as a static Seal properly will not to the Job when Installed on the
× a)
Stationary
b)
Moving parts
e)
Both
58. Gasket can be used as an oll seal and between engine crankcase and accessories
a)
Asbestos
b)
Cork
c)
Cu
59. Running seal Is
a)
Packing
b}
Gasket
c)
O-ring Packing
60. MTCS about compostte
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61.
a)
High strength to weight ratto
b)
A+ lighter than metal
e)
C + rapid corrosion occur
MTCS regarding meshing of gear
a)
Larger of the two Is referred as GEAR
b)
1 + Smaller of the two is PINION
e)
2 +·Either could be driver and the other driven member
d)
Larger one will be driver while smaller one Is pinion
62. MTCS compound gear train
a)
Two of the Intermediate gear mounted on the same shaft and rotating at the same speed
b)
1 + Gear train requires at least 4 gear
e)
1 + Gear train require at least 2 gear
63. MTCS Simple gear train
a)
Two gear mounted on the same shaft
b)
Two gear mounted on the separate shaft
e)
Two or more gear mounted on the separate shaft
64. MTCS
a)
Even no. of gear ln the train will cause the driven gear to rotate in a direction opposite to that driver gear.
b)
Odd no. of gear in the train will cause the driven gear to rotate ln a direction same to that driver gear.
c) Bott,
d)
Only 1 is correct
65.
MTCS addendum
a)
Is the portion of the tooth that subject above or outside pitch of circle
b)
Is the portion of the tooth that subject below or inside pitch of circle
c)
None of the above
66. MTCS Clearance
a)
Difference between addendum and dedendum
b)
Difference between whole depth and working depth
e)
Equal to twice of addendum
67. Purpose of the gear rack
a)
Change rotary motion into reciprocating motion
b)
Does not change rotary motion into reciprocating motion
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e)
Change reciprocating motion Into rotary
68. Which gear is one which the teeth are cut so that they radiate from apex of the cone and lie on the conical surface
a)
BEVEL gear
b}
SPUR gear
c)
HELICAL gear
69. Which gear are used to transmit motion from one shaft to another shaft at an angle to the first
a)
BEVEL gear
b}
SPUR gear
c)
HELICAL gear
70. What are miter gear
71.
a)
Name given to mating bevel gear
b)
1 + Having same no. of teeth and pitch cone
c)
2
+ Having angle of 45 degree
Which gear is one with teeth cut on a cylinder and at an angle with the axis of rotation of the gear body
a)
× b)
c)
BEVEL gear
SPUR gear
HELICAL gear
72. The parts of the surface if the thread which connect adjacent flanks at the top of the rigid
a)
Root
b)
Lead
c)
Crest
73. Top surface joining the sides of the thread
a)
Crest
b)
Lead
e)
Root
74. The distance a screw thread advance axially in one turn
a)
Lead
b)
Root
e)
Crest
75. .. ......... are used where strength is not deciding factor
a)
Screw
b)
Bolt
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e)
L
Rivets
76. ......... have no clearly defined grip length
a)
Screw
b)
Bolt
e)
Rivets
77. ln 1-inch dia size, the
a)
thread specifies 12 thread per Inch (1-12 inch)
NF
b) UNF
c)
UNC
d)
NC
78. MTCS
a)
ln 1-inch dia size, the UNF thread specifies 12 thread per inch (1-12 inch)
b)
A+ ln 1-inch dia size, the NF thread specifies 14 thread per inch (1-14 inch)
c)
B + both type of thread are designated by the number of times the incline rotates around a 1-inch length of the
given dia
79. Corrosion ln alloy and carbon steel is indicated
a)
Red rust deposit and pitting
b)
Black pits or uniform reddish - brown surface
e)
White powdery
80. Corrosion resistant steel
81.
*82.
a)
Red rust deposit and pitting
b)
Black pits or uniform reddish - brown surface
c)
White powdery
Corroding action will take place if in contact with each other in presence of moisture
a)
7075 and 3003
b)
6053 and 5052
c)
2117 and 2124
d)
6053 and 7075
(Mg & Zn)
Forms of corrosion which occur in airframe structure
a)
Surface and fllltform
b)
Stress corrosion and intergranula
e)
Dissimilar
metal corrosion and intergranular
-¡
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83. Galvanic action takes palee
a)
lntergranular corrosion
b)
Surface corrosion
c)
Dissimilar corrosion
84. The attack penetrate Into the core of the material along the boundaries of the metal grain
85.
a)
Pitting corrosion
b)
lntergranular corrosion
e)
Stress corrosion
False briniling is type of corrosion
a)
Stress corrosion
b)
Fretting corrosion
e)
Surface corrosion
86. Stress corrosion
is due to combine effect
a.
Tensile stress and Improper cleaning
b.
Tensile stress and metal system
c.
tensile stress and corrosive environment
87. lntergranular corrosion Inspection method
102)
a)
b)
e)
d)
103)
a)
b)
e)
104)
a)
Ultrasonic
b)
Eddy current
e)
Both
Corrosion occur due to
Climate
Dust and oil
Foreign material
All the above
Disassembly and inspection done in which type in corrosion
Stress corrosion
lntergranular corrosion
Dissimilar metal corrosion
Which tubing is used in for ventilating conduit and instrument lines
a)
b)
e)
105)
a)
b)
e)
106)
a)
b)
1100
2014
6061
Which rivet is used for non structural purpose ln aeroplane
Solid shank
Blind rivet
Mild steel rivet
Jo bolt is used
Permanent part of assembly
Not subjected to replacement or servicing
1
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c)
d)
3 piece rivet
All the above
a)
b)
c)
d)
Spring is made up
Plastic
1 + Metal
2 + Composite
3 + Elastomer
a)
b)
c)
Taper pin is used
Used is shear load
ln tie rod terminal
For safe tying nut, bolt and screw
a)
b)
c)
Corrosion can be removed by
Strip the area to be treated
1 + Remove corrosion
2 + Apply protective coating
a)
b)
c)
Ti disadvantage
Ti is heavier than stainless steel
High melting point
Brittle on long expose of air
107)
108)
109)
11 O)
111)
a)
b)
c)
Lubrication of bearing
To lubricate area of rubbing contact between rolling element
Dissipate heat
All the above
d)
Anodizing Is
10%
10%
4%
4%
a)
b)
c)
Which can be rotated by finger
Wing nut
Plane check nut
Castellated nut
112)
a)
b)
c)
113)
114)
a)
b)
c)
115)
a)
×b)c)
and cage
by weight and 4% phosphorus by volume
by volume & 4% phosphorus by weight
by weight & 10% phosphorus by volume
by volume & 10% phosphorus by weight
Which fastener is used where more strength is required
Bolt
Screw
Rivet
Clearance+ Addendum
Deddendum
Whole depth
Pitch circle
Which bolt Is Interchangeable
116)
a) AN 3 and AN 73
b)
c)
117)
a)
b)
c)
d)
118)
a)
b)
c)
AN 7 and AN 73
None
ln bearing
When direction of load is at right angle it is radial load and when the load is parallel to shaft it is axial load
Radial load changed due to RPM changed and AOA ,manoeuvring
Axial load change due to compressor and turbine
All the above
For removing abrasion scratch from al tubing
Al brush + O brush
Burnishing tool + emery paper
Al brush & burnishing tool
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a)
b)
c)
Whîch is spring is used for tension and compression load
Leaf spring
Helical compression and tension spring
Torsion spring
a)
b)
c)
MTCS
AN has ressesd
AC has longer
AC has coarser
119)
120)
121)
a)
b)
c)
122)
a)
b)
c)
d)
123)
a)
b)
c)
d)
124)
a)
b)
c)
* 125) a)
b)
c)
126)
a)
b)
c)
127)
a)
b)
c)
Which is non self locking nut
Shear nut AN 350
Castellated nut AN 320
Wing nut-AN 310is done
MTCS
Self tapping screw not Intended to be removed after Installation
Structure screw is used only after installation
Drive screw is a nail and not a screw
Self tapping screw can be substitute for structural screw
Which are the following angle flaring is done
37 degree
35 degree
45 degree
Both 1 and 2
Sealing application
Bulbed cherrylock rivet
Wire draw cherrylock rivet
Huck mechanical locked rivet
Nicopress Is related to
Cables
Hardness testing
Corrosion process
Which is formed by layer of flat spring
Flat spring
Spiral spring
Leaf spring
Recessed triangle Indicate
Internal wrenching bolt
Close tolerance bolt
General purpose bolt
128) Carburizing occurred after heat treatment process for case harden which process known is
a) Tempering
b) Carburizlng
c) Case Hardening
129) ln casting alloy A214 indicate
a. Zinc improve its pouring qualities is Indicated by the letter A
130.
b.
Zinc improve its pouring qualities is indicated by the letter T
c.
Zinc improve its pouring qualities is indicated by the letter C
Proof test air or instrument lines are tested
a.
Dry or oil free air
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+ Nitrogen
b.
1
c.
Hydraulic fluid
131. MTCS Flareless tube Installation
a.
Final tightening commence at the point where the nut just begins to bottom
b. Use a wrench and turn the nut one-sixth turn
c. Permissible to tighten the nut an additional one sixth turn
×
d.
All the above
132. ln MS 21900 -4 D (MS flareless tube fitting) D indicate
a.
Al alloy
b.
Al
c.
2017 rivet is used
133. Which of the following is used in hydraulic lines in area where routine disconnection are not required
a.
Swaged
b.
Cryofit
c. Both
134. ln cryofìt sleeve mfg
a.
3% smaller, frozen ln liquid nitrogen, expanded to 5% larger than the line
b.
5% smaller. frozen in liquid nitrogen, contracted to 3% larger than the line
c.
5% smaller. frozen in liquid nitrogen, expanded to 3% larger than the line
135. flared, flareless. or permanent type fitting may be used
a.
Low, medium pressure system
b.
ln all system regardless of the pressure
c.
Medium pressure
136. Advantage of double flare
a·.
Smoother and more concentric than single
b.
1 + more resistant to shearing effect
c.
1 + not resistant to shearing effect
flare
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137. Tubing made from 11 OO H14 or 3003 H 14 is used
a.
×b.
c.
Low or negligible
fluid pressure
Low or medium pressure
Medium pressure
138. ln number "AN3DD5A" indicate the number 5
a.
5/16 inch length of boit
b.
5/8 Inch length of bolt
c.
5/16 inch dia of bolt
139. The numberAN441
a.
Round head rivet
b.
Flat head rivet
c.
Universal head rivet
indicate the which type of rivet head
140. A triangle marking on the head of bolt identified
a.
AN standard bolt
b.
Close Tolerance Bolt
c.
MS bolt
141. Self locking nut are
a.
Boots self locking nut
b.
Stainless steel self locking nut
c.
Elastic stop nut
d.
All
142. Which washer is used in place which is subjected to vibration
a.
Special Washer
b.
Shakeproof washer
c.
Lock Washer
143. MTCS
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a.
Riveted coated with zinc chromate Is yellow
b.
Metal spray is silver gray
c.
Anodized has pearl gray
d.
All
144. The most common aircraft cable is
a.
7x7 and 7x19
b.
7x1 and 7x18
c.
7x19and7x18
d.
7x18and7x14
145. Disadvantage of cable linkage is
a.
Not flexible
b.
Frequent adjustment of cable
c.
High weight
146. MTCS
a.
Taper pin are used to carry shear load
b.
Fiat head pin is used with rod terminals and secondary cable
c.
Roll pin is tubular shape and seated in the full length of tube
d.
All the above
147. Which determine the selection of wire in the electrical system
a.
Voltage drop
b.
Current carrying density
c.
Both
148. To avoid the magnetic interference around wire which is used
a.
Shielded wire
b.
Standard aircraft wire
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c.
None
149. MTCS control cable
a.
3/32 Inch cu brass
b.
1 /1 6 Inch cu brass
c.
3/32 Inch stainless steel
150. MTCS
a.
1 O gauge-blue
b.
15 gauge-red
c.
11 gauge-yellow
d.
All
151. Spring which has excellent resistance to corrosion
a.
Stainless steel
b.
Cr - Vd steel
c.
Cr - Mb steel
152. Size, Dia and material of spring Is selected for
a.
Load carrying capacity
b.
Corrosion resistance
c.
None
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