| Post Name | TRADESMAN-MACHINIST - Technical Education |
|---|---|
| Question Paper Code | 026/2025 |
| Category Code | 137/2024 |
| Date of Test | 27 February 2025 |
| Medium of Question | ENGLISH |
| Exam Type | OMR Examination |
| Total Questions | 100 |
1
White symbol on blue background is used for which type of safety sign?
Answer
B. Mandatory sign
2
The basic unit of length as per international system of unit is :
Answer
D. Metre
3
What is the least count of vernier sliding caliper?
Answer
B. 0.02 mm
4
What is the use of retaining pins in hacksaw frame?
Answer
B. Locating blade
5
What is C stands for ABC of First aid?
Answer
C. Circulation
6
Which is the material used for making steel rule?
Answer
B. Spring steel
7
How many main scale divisions are taken for least count calculation in vernier caliper
with 0.1 mm accuracy?
Answer
B. 9
8
What is the pitch selected by cutting sheet metals by hacksaw blade?
Answer
B. 0.8
9
Which term indicates the βDisciplineβ or commitment of work place in 5 S concept?
Answer
D. Sustain
10
What is the angle of punch which is used for correct seating of divider point?
Answer
D. 30
11
In Micrometre which part act as a nut?
Answer
B. Barrel
12
Which file is used for filing at right angles to the finished surface?
Answer
B. Hand file
13
Which is the colour code bin used in industry for plastic waste?
Answer
C. Yellow
14
What is the other name of Jenny caliper?
Answer
C. Odd leg
15
The pitch of Micrometer is 0.5 mm but lead is __________ mm.
Answer
A. 0.5
16
While filing metal chips are clogged between teeth is known as :
Answer
B. Pinning
17
Which preventive device is used against falling device in workshop?
Answer
Question Cancelled
18
Which hammer is used for spreading metal in one direction?
Answer
B. Cross pein
19
Measurement of 63.96 mm is taken from an outside Micrometre what is the minimum
range?
Answer
B. 50
20
Which chisel is suitable for making grooves?
Answer
B. Cross cut chisel
21
Which one of the following is a serious life threatening condition?
Answer
B. Coma
22
For protecting finished objects which material is used for making soft jaws?
Answer
B. Aluminum
23
In Dial test indicator which part helps to align zero?
Answer
B. Bezel
24
Which tap is used for finishing cut?
Answer
C. Plug tap
25
Which one of the following indicates the aim of house keeping?
Answer
B. Keep better environment
26
Which one of the following operation cannot be done by try square?
Answer
C. Check finishness
27
In vernier height gauge scriber is made of which material?
Answer
B. Carbide
28
Which die is used for resharpening threads?
Answer
C. Die nut
29
What is the popular method of waste disposal and less expense?
Answer
C. Recycling
30
What is the least Count of Vernier bevel protractor?
Answer
A. 5'
31
What is the use of reamer?
Answer
D. Finishing and Sizing
32
Dry powder extinguishers are used to prevent __________ type of fire.
Answer
D. All of these
33
Which one of the following part is not included in the combination set?
Answer
C. Screw head
34
Which instrument is used for checking chordal addendum and chordal thickness of a
gear?
Answer
B. Gear Tooth caliper
35
Which part is used for fine adjustment in a universal surface gauge?
Answer
C. Rocker arm
36
While load lifting what is the cause of muscle strain?
Answer
B. Sudden jerking
37
Which marking media takes more time for drying?
Answer
B. Prussian blue
38
In Micrometre fine measurement can be taken with the help of __________ part.
Answer
B. Ratchet stop
39
The operation of countersinking is to make the surfaces :
Answer
Question Cancelled
40
The chip breaker is used while turning ___________ materials.
Answer
B. Ductile
41
In power feed mechanism of milling machine which part connect the feed gear box and
knee?
Answer
B. Telescopic shaft
42
Where is the spot facing operation conducted?
Answer
B. Around one end of hole
43
In power transmission which thread is used for power transmission?
Answer
Question Cancelled
44
The specification of plain milling cutter is 30 Γ 40 Γ 27 mm, in which 40 mm means?
Answer
C. Length
45
Which one of the following machine is driven by pneumatic power?
Answer
C. Portable drilling machine
46
While applying pressure on threaded part, which part of thread acts as bearing surface?
Answer
C. Flank
47
For pocket milling operation which one of the following cutter is used?
Answer
B. End milling
48
Which one of the following is not used for holding twist drills?
Answer
C. Adapter
49
In double start thread lead is equal to :
Answer
B. Double the pitch
50
For producing convex surface on a work which cutter is used?
Answer
B. Concave cutter
51
What is the RPM for 25 mm twist drill?
Answer
C. Less than 10 mm drill
52
For calibration purpose which grade of slip gauge is used?
Answer
D. Grade 00
53
The relief angle grinded on milling cutter is :
Answer
Question Cancelled
54
Which one of the following equation used for finding RPM in drilling machine?
Answer
B. 1000 v Γ· d Ο
55
The principle of Sine bar is based on _____________ function.
Answer
B. Trigonometric
56
Which one of the following operation is known as convention milling?
Answer
C. Up milling
57
Which property of a lubricant help to withstand high pressure or load on a bearing
surface?
Answer
C. Viscosity
58
In a gear train which one of the following is the linking gear?
Answer
B. Idler gear
59
Which jig is used to locate the work piece from its face?
Answer
B. Table jig
60
The periodic maintenance helpful to avoid _________ of machine.
Answer
B. Long shutdown
61
For turning a cored job which one of the following device used?
Answer
Question Cancelled
62
Which attachment used for cutting gears in milling machine?
Answer
B. Indexing attachment
63
Which one of the centre used for heavy job turning with high speeds?
Answer
C. Revolving centre
64
Write the equation for finding linear pitch in rack teeth?
Answer
A. Οm
65
While turning which device used to give torque to the work?
Answer
B. Dogs
66
For right angle power transmission which gear used?
Answer
C. Bevel gear
67
For turning long taper which method used?
Answer
C. Offset tail stock
68
In a simple indexing head where is the worm gear fitted?
Answer
C. Spindle
69
In which part of lathe contains the controlling mechanism of carriage?
Answer
B. Apron
70
Which cam element cause reciprocating movement to the follower?
Answer
B. Lobe
71
Which statement is/are true with the safety precautions regarding CNC lathe?
(i) Make sure the CNC machine isnβt operating when you load a tool magazine.
(ii) Double check that you have set the right tool data for the program.
(iii) Shift the levers to change the speeds and feeds only when the rotating parts are
fully stationary.
Answer
B. Only (i) and (ii)
72
Which statement is/are true with the advantage of CNC machine over NC machine?
(i) The part programming is done with punched cards.
(ii) Reprogramming or editing the part program is very easy.
(iii) Greater flexibility of controlling and programming.
Answer
C. (ii) and (iii) only
73
Which statement is/are correct with the CNC control system?
(i) Sinumeric and fanuc controls systems are CNC control systems.
(ii) Magnus and divine control systems are CNC control systems.
(iii) Heidenhain and mitsubishi systems are CNC control systems.
Answer
A. (i) and (iii) only
74
Which statement is correct with the ISO G codes in sinumeric system?
(i) G63 code refers to tapping
(ii) G90 code refers to absolute dimension
(iii) G04 code refers to dwell
Answer
D. All of the above (i), (ii) and (iii)
75
Which statement is correct with the ISO M codes in sinumeric system?
(i) M10 code refers to coolant off
(ii) M04 code refers to spindle stop
(iii) M09 code refers to coolant off
Answer
C. (iii) only
76
Which statement is/are correct with NC Co-ordinate system?
(i) Spherical co-ordinate system is used in NC machines
(ii) Cartesian Co-ordinate system is used in NC machines
(iii) Cylindrical Co-ordinate system is used in NC machines
Answer
B. (ii) only
77
Which statement is/are true with the open loop control system and closed loop control
system?
(i) Open loop control system have the facility of feed back signal compared with the
input signal.
(ii) Closed loop control system have the facility of feed back signal compared with the
input signal
(iii) Open loop system doesnβt have the facility of feedback signal compared with the
input signal
Answer
C. (ii) and (iii) only
78
Which statement is/are true with CNC machining sequence?
(i) N20 G54 M03 S500 β this block indicates spindles speed 500 in CW
(ii) N30 G92 S1500 β this block indicates the minimum speed for 1500 rpm
(iii) N35 G00 X050 220 β this block means rapid traverse to the position with
co-ordinates X50 220
Answer
Question Cancelled
79
The specification of CNC boring bar is S32 U S S which of the statement is/are true
about this holder?
(i) U indicates tool length
(ii) U indicates shape of holder
(iii) 32 indicates diameter of boring bar
Answer
D. (i) and (iii) only
80
Which of the statement is/are true with the operational modes in CNC turning?
(i) In auto mode the program can be edited manually
(ii) In MDI mode, we can input the program command manually and execute the
program.
(iii) In jog mode, the turret can be moved in X and Z direction.
Answer
B. (ii) and (iii) only
81
Which is/are not true with the safety of CNC milling machine?
(i) Never reach into the machine while the cutter is rotating
(ii) Safety glasses must be worn in CNC area
(iii) Do not shift speed changing levers while the machine is in motion.
Answer
Question Cancelled
82
Which statement is/are true with CNC milling?
(i) The up and down movement of tool refers to Z axis
(ii) The transverse movement of table refers to Y axis
(iii) The left and right movement of table refers to Z axis
Answer
C. (i) and (ii) only
83
Which statement is/are true with the ATC-CNC milling?
(i) The function of ATC is to change the tool quickly with the help of operator
(ii) ATC is used in CNC milling to improve the production and tool carrying capacity of
the machine.
(iii) ATCs change tools rapidly reducing non production time
Answer
A. (ii) and (iii) only
84
Which statement is true with CNC milling G codes?
(i) G20 refers matric co-ordinate positioning
(ii) G20 refers inch co-ordinate positioning
(iii) G41 refers 2D compensation left
Answer
Question Cancelled
85
Which statement is/are true with the M code in CNC milling?
(i) M01 refers to optional program stop
(ii) M05 refers to spindle stop
(iii) M09 refers to coolant off
Answer
D. All of the above
86
Which statement is true with the programming line in CNC milling N100 G00X 150.0
Z200 O?
(i) N indicates program number
(ii) N indicates sequence number
(iii) N indicates tool offset number
(iv) N indicates tool number
Answer
B. (ii) only
87
Which statement is/are true with the operational mode in CNC milling?
(i) MDI mode is used for input of data manually
(ii) Jog mode is used for move the tool manually
(iii) Auto mode is used to edit the program.
Answer
C. (i) and (ii) only
88
Which of the following statement is/are correct about grinding wheel?
(i) Aluminium oxide wheels are suitable for tough high tensile steels
(ii) Silicon carbide wheels are used for grinding high speed steel
(iii) Aluminium oxide wheels are suitable for grinding woods.
(iv) Silicon carbide wheels are used for grinding mild steel.
Answer
A. Only (i)
89
Which of the following statement is/are correct about grinding machines?
(i) Cylindrical grinding machines are used for grinding round shafts
(ii) Cylindrical grinding machines are used for grinding taper shafts
(iii) Surface grinding machines are suitable for round surfaces
Answer
B. Only (i) and (ii)
90
Specification of a grinding wheel is given as C 10 P 5 V BE. Which statement is/are not
correct with this specification.
(i) C stands for silicon carbide
(ii) 10 stands for fine grain size
(iii) P stands for soft grade of bond
Answer
Question Cancelled
91
Twist drills is blunt. It requires regrinding. Which statement is/are correct?
(i) Drills can be regrind on a tool and cutter grinder
(ii) Drills can be regrind on a bench grinder
(iii) Drills cannot be regrind on a bench grinder
Answer
C. Only (i) and (ii)
92
One of the main defect that seen on a grinding wheel is glazing. Which of the statement
is/are correct in the case of glazing?
(i) Glazing is caused by grinding a hard metal on a softer grade of bonded wheel.
(ii) Glazing is caused by grinding a hard material on a hard grade bonded wheel
(iii) Glazing is caused by grind a soft material on a soft graded bonded wheel
Answer
A. Only (ii)
93
The wheel marking system is an important thing in the selection of a grinding wheel.
Which statement is/are true with the selection of grinding wheel.
(i) For rough grinding HSS the suitable wheel is aluminium oxide
(ii) For grinding HSS the suitable wheel is silicon carbide
(iii) For grinding tungsten carbide the suitable wheel is silicon carbide
Answer
B. Only (i) and (iii)
94
Which statement is correct with the bench grinding machines work rest?
(i) The minimum gap between the wheel and work rest is 2 mm
(ii) The maximum gap between the wheel and work rest is 2 mm
(iii) The minimum gap between the wheel and work rest is 20 mm
Answer
C. (ii) only
95
Which of the statement is/are correct with the repair of damaged grinding wheel?
(i) Dressing of wheel is regains its sharpness
(ii) Truing of wheel is regains its original shape
(iii) Dressing is done after truing
Answer
B. Only (i) and (ii)
96
Which of the statement is/are true with the cutting speed of a material?
(i) Cutting speed depends on material of cutting tool
(ii) Cutting speed depends on the condition of the machine tool
(iii) Cutting speed depends on the size of the tool
Answer
C. Only (i) and (ii)
97
Which statement is/are true with the selection of a grinding wheel?
(i) Vitrified bonded wheel doesnβt affect on water, acid etc.
(ii) Silicate bonded wheel suitable for large diameter wheels
(iii) Organic bonded wheel is suitable for making thin cutoff wheels
Answer
D. All of the above (i), (ii) and (iii)
98
Which statement is/are true with the tool off setting in CNC milling?
(i) Tool offsetting is done in jog mode
(ii) Tool offsetting is done in MDI mode
(iii) Tool offsetting is done in edit mode
Answer
A. (i) only
99
Which statement is/are true with the tool life in CNC milling?
(i) Tool life is the duration of actual cutting time after which the tool no longer usable
(ii) Tool life is the time interval between two consecutive resharpening
(iii) T n = C / V is the equation related with tool life
Answer
C. (i) and (iii) only
100
Which statement is/are true with the productivity of CNC milling machine
(i) Employing an excellent CAD/CAM software
(ii) Using updated and well maintained machines
(iii) Do not install a costly machine
Answer
B. (i) and (ii) only
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