| Post Name | Mechanical Operator - Pharmaceutical Corporation (IM) Kerala Ltd |
|---|---|
| Question Paper Code | 014/2024 |
| Category Code | 442/2022 |
| Date of Test | 25 January 2024 |
| Medium of Question | ENGLISH |
| Exam Type | OMR Examination |
| Total Questions | 100 |
1
Which safety sign is white symbol on blue background?
Answer
A. Mandatory sign
2
Toxic Hazard is
Answer
B. Chemical Hazard
3
PPE stands for :
Answer
C. Personal Protective Equipment
4
The point angle of center punch is :
Answer
D. 90 degree
5
The middle portion of the hammer head where the weight of the hammer is stamped :
Answer
C. Cheek
6
The accuracy of try square is :
Answer
C. 0.002 mm per 10 mm length
7
The protective metal ring to prevent cracking the, handle of a file :
Answer
B. Ferrule
8
Which statement is true in case of safe edge file?
Answer
D. The edges along the width are parallel throughout the length
9
These are not used for cutting new threads, used for chasing or reconditioning the damaged
threads :
Answer
D. Die Nut
A 3
10
The Chisel used to cut curved grooves
Answer
A. Half-round nose chisel
11
The fine adjustment screw of universal surface gauge is fixed on :
Answer
C. Rocker Arm
12
The pitch of threaded spindle of Matric outside micrometer is :
Answer
B. 0.5 mm
13
The chisel will slip when :
Answer
A. The clearance angle is too low or zero
14
The drill type used for general purpose drilling work is :
Answer
B. Type N
15
The Accuracy of Vernier Revel Protractor is :
Answer
C. 5 minute
16
Which instrument you will prefer to measure a dimension of 20.21 mm?
Answer
B. Micrometer
17
Fusibility is
Answer
B. Physical Property
18
The ability of metal to withstand scratching, wear, abrasion and penetration :
Answer
C. Hardness
19
Pig Iron is produced in :
Answer
D. Blast Furnace
20
The percentage of carbon content in Mild steel is :
Answer
C. 0.15 to 0.3
21
Sudden quenching for heat treatment, which medium is suitable?
Answer
A. Caustic soda in water
22
Which carburizing process is rapid?
Answer
D. Salt bath carburizing
23
The process of raising a strip of metal around the end of a round pipe is known as :
Answer
D. Beading
24
Which among the following statement is/are correct about a conical rivet?
(i) Generally used in light assembly
(ii) It is a solid rivet
(iii) Generally used in heavy structural work
(iv) Rivet gun is necessary for rivetting
Answer
B. Only (i) and (ii)
25
Which among the following statement is/are not correct about polarity in arc welding?
(i) When the electrode cable is connected to the negative terminal it is called reverse
polarity
(ii) When the electrode cable is connected to the positive terminal it is called reverse
polarity
(iii) When the electrode cable is connected to the negative terminal it is called straight
polarity
(iv) The polarity of a machine refers to the direction of current flow
Answer
A. only (i)
26
Which Grade slip gauge is used for inspection purpose?
Answer
C. Grade ‘0’ accuracy
27
Which among the following statement is/are correct about woodruff key?
(i) This is a parallel key with rounded ends
(ii) For fitting this key in the assembly a flat surface is machined on the shaft
(iii) The top portion of the key projects out and fits in the key way cut on the hub
(iv) This key is particularly usefull on tapered fittings on the shafts
Answer
A. Only (iii) and (iv)
28
A knurling tool having two rollers, one having straight teeth and the other having teeth at
right angles to the axis of knurl. By using this tool we can make –––––––––– on external
cylindrical surface of a job :
Answer
D. Cross knurling
29
How to avoid the defect ‘concave face’ while facing of a work?
Answer
B. By clamping the tool rigidly with minimum over hang
30
Which among the following statement is/are correct about a hand chaser?
(i) It is a single point thread cuffing tool
(ii) It is a multi point thread cutting tool
(iii) They are made up of rectangular cross section of tool steel, hardend and tempered
(iv) Hand chaser removes Larger amount of material at the time of thread cutting
Answer
A. Only (ii) and (iii)
31
Name the part of a lathe which provides the following all functions :
(i) To ensure arrangements for lubricating the gear, shafts and bearing
(ii) To accommodate shafts, gears, and levers for a wide range of varying work speed
(iii) To provide a means to assemble the work holding devices
(iv) To transmit drive from the main motor to the work
Answer
B. Head stock
32
Cross slide, compound rest and Top slide are the parts of
Answer
C. Saddle
33
The surface joining the crest and root of a screw thread is known as :
Answer
C. Flank
34
The diameter of the thread at which the thread thickness is equal to one half of the pitch is
known as :
Answer
A. Pitch diameter
35
Name the washer, which can be used for locking the nuts located near an edge or corner :
Answer
D. Tab washer
36
Which among the following bearing materials have self lubricating property?
(i) Sintered alloys
(ii) Nylon
(iii) Teflon
Answer
C. All of the above (i) (ii) and (iii)
37
Write the name of ball-bearing part, which serves to position the rolling elements :
Answer
B. Retainer
38
Which of the following statement is/are correct about Fixture?
(i) Fixture is used to hold and position the work piece
(ii) Fixture guides the cutting tool
(iii) Fixtures are used in drilling machine for drilling, tapping and counter boring etc.
(iv) Fixture is usually fixed to the machine table
Answer
A. only (i) and (iv)
39
What is the name of jig which is used for drilling at angles other than 90°?
Answer
B. Modified angle plate jig
40
What is the name of part marked as ‘X’?
Answer
C. Valve seat
41
Name the pipe fitting which is used to close the end of an external threaded pipe :
Answer
D. Cap
42
Which metal is always state first, in the composition of soft solder?
Answer
A. Tin
43
Write the Name of operation from the following statements :
– The tool with abrasives mounted on it is held on a spindle
– As the spindile rotates, a reciprocating motion is also given to the tool
– Carried out for stock removal from metallic and non-metallic work pieces for achieving
super finish
Answer
B. Honing
44
Write the name of lapping material which is used for Lapping tungsten carbide :
Answer
D. Diamond
45
Constructional features and use of a particular coupling is given below, what is the name of
this coupling :
(i) Both half of the couplings have three jaw hubs
(ii) A rubber spacer inset with six legs fits between the two hubs
(iii) Used for low power transmission
Answer
D. Spider coupling
46
An imaginary circle on which two mating gears seems to be rolling is known as :
Answer
C. Pitch circle
47
The temperature at which the vapour is given off from the oil is known as __________ of a
lubricant :
Answer
C. Flash point
48
Name the hydraulic valve shown in figure :
Answer
B. 4/2 way direction control valve
49
Name the pneumatic component shown in figure :
Answer
A. Filter
50
An assembly of pulley blocks with rope threaded through the pulley is called :
Answer
D. Tackle
51
Calculate the RPM, for a high speed drill of diameter 20.5 mm to cut a mild steel block, if the
Cutting speed is 30 m/min :
Answer
C. 466 rpm
52
Calculate the drilling time to drill 12 mm diameter hole in a plate of thickness 62 mm, if the
Cutting speed is 30 m/min and feed rate 0.05 mm/rev.
Answer
A. 1 minute 50 sec.
53
In a radial drilling machine, the cutting speed in counter sinking is__________ than that of
drilling.
Answer
B. 25% less
54
In a grinding machine the work speed formula is :
Answer
B. (Cd^z p / T_m t^x s^y) m/minute
55
In silicon carbide abrasive, black grit and green grit contains how much percentages of
Silicon carbide :
Answer
D. 95, 97
A 9 014/2024
56
Indian standard marking system of grinding wheel is denoted by :
Answer
C. IS1249:1958
57
In plunge grinding the thread grinding work requires :
Answer
D. 3 smpm
58
Which one of the following cutter is not to ground on the lands of the cutter?
Answer
A. Reamer flute cutter
59
Which one of the following concentration wheel is recommended for both vitrified and metal
bonded cup wheels used for off hand grinding?
Answer
C. 75 concentration
60
When using diamond dresser 1 carat diamond is used for dressing upto ___________ diameter
wheels?
Answer
B. 200 mm
61
In special case the glazed grinding wheel can only be used for :
Answer
D. None of the above
62
In internal grinding using cylindrical grinder which of the following statements are true :
Answer
A. The wheel rotates in a fixed position; the works is rotating and reciprocating
63
Which one is not a machine safety precaution in surface grinding?
Answer
B. Check the centralised lubricant system by pressing app switches
64
Which of the following is the advantage of conventional lathe over CNC turning centre?
Answer
C. Less maintenance and less investment cost
65
In case of CNC turning centre, which statement is false to achieve higher metal removal rate:
Answer
D. Using higher spindle speed
66
Which one of the following is not an advantage of ball screw in CNC machines?
Answer
A. Ball screws have no longer life
67
The condition for deciding zero offset is :
Answer
B. Work must be clamped on the machine table
68
Name the point with in the work piece chosen for the purpose of defining the position to be
reached by the tool :
Answer
A. Program Zero
69
Where the tool reference point lies in CNC machine?
Answer
C. Spindle nose
70
Electrical contacts, one each ate fixed on the CNC machine frame for each one of the slides.
State the name given to these contacts :
Answer
D. Reference point
71
What is the purpose of edge finder during setting of the job?
Answer
A. Measure Zero offset
72
Which preparatory code is used to identify the work zero point in a CNC Machine?
Answer
B. G54
73
State the name given to the following program simplification method One block program for
drilling / Boring, number of holes equally spaced in a pitch circle :
Answer
C. Canned cycle
74
The last drive shaft in the headstock assembly of a lathe is :
Answer
C. Main spindle
75
The back gear unit of a cone pulley lathe is used for :
Answer
A. Reduce the spindle speed
76
In orthogonal cutting, the cutting edge inclination is :
Answer
A. 0º
77
An oblique cutting tool angle ranges from :
Answer
D. 25° to 40°
78
The size of a slotting machine is specified by :
Answer
A. Maximum stroke length of the ram
79
The stroke length of slotting machine is adjusted by change :
Answer
D. The radius of sliding block on bull gear
80
A slotting machine removes metal during :
Answer
C. Downward stroke only
81
How can we ensure that the ram or tool holder of a slotter does not strike the work piece or
table?
Answer
B. Move the ram by hand
82
The part of slotting machine used for produce circular surfaces:
Answer
A. Rotary table
83
A slot is cut on the body of the ram :
Answer
A. For changing the position of the stroke
84
Clean the machine only when it is:
Answer
B. Not in motion
85
A slotting tool do not have any
Answer
C. Side rake angle
86
The milling machine most commonly used in general workshop is :
Answer
C. Column and knee type
87
Vertical head of a vertical milling machine can be swiveled up to an angle of ___________
degree on either side :
Answer
C. 45º
88
The tapered end of an arbor is held securely with the milling machine spindle by
Answer
B. Draw in bar and lock-nut
89
According to B.I.S. specifications stub arbors with Morse taper shank are available from the
diameters :
Answer
D. 13 mm to 27 mm
90
The cutter used for milling semi-cylindrical keyways in a shaft is :
Answer
D. Woodruff key cutter
A 13 014/2024
91
If the clearance angle of a milling cutter is not provide :
Answer
D. The tool will rub against the work surface
92
The negative rake angle of a milling cutter at low cutting speed produce :
Answer
A. Poor surface finish
93
The cutter used to mill undercuts in wider milled channels :
Answer
B. T - slot cutter
94
The cutter used to mill flat surfaces which are truly flat to a very high standard of accuracy :
Answer
D. Fly cutter
95
The cutter used for milling dovetail guide ways is :
Answer
C. Single angle cutter
96
The method of feeding the work against the direction of rotation of the cutter :
Answer
A. Conventional milling
97
The mechanism involves in a circular table attachment is :
Answer
B. Worm and worm gear
98
Find the suitable index plate for index at an angle of 34º40’ :
Answer
B. 27
99
Find the number of turns of the index crank for indexing 41 teeth :
Answer
A. 40 holes in 41 hole circle
100
The milling cutter mainly used for step milling, slot milling and straddle milling is :
Answer
C. side and face milling cutter
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