| Post Name | Junior Instructor (Turner) (NCA - LC/AI) - Industrial Training |
|---|---|
| Question Paper Code | 159/2023/OL |
| Category Code | 425/2022 |
| Date of Test | 10 November 2023 |
| Exam Type | Online Examination |
| Total Questions | 100 |
1
From the below statements, choose the correct one regarding the classification of a hammer
Answer
D. Shape of peen
2
Which one of the following suits best regarding the length of a file?
Answer
C. Distance from tip to heel
3
Choose the Caliper which is extremely useful for scribing lines parallel to the edge of a work.
Answer
A. Odd leg caliper
4
Which of the following corresponds to the accuracy of a Try square?
Answer
B. 0.002 mm per 10 mm length
5
Name the vice that a Blacksmith uses most often
Answer
C. Leg vice
6
Which of the following standard taper is used in shanks of twist drill and remears?
Answer
A. Morse taper
7
Choose the direction of tool movement with reference to the Lathe axis in tail stock setover method.
Answer
C. Parallel
8
What type of standard taper is used on the external taper of lathe spindle nose where chuck or face plate is mounted?
Answer
C. Jarno taper
9
Which one of the following is the advantage of taper turning attachment over tail stock offset method?
Answer
D. Power feed can be given for both internal and external taper
10
State the most commonly used standard taper in industries.
Answer
A. Morse taper
11
The element of taper which is expressed by 'Number' in metric taper is
Answer
D. Big diameter
12
What is the taper ratio for a taper length of 18 units and the difference in diameter is 1 unit?
Answer
B. 1 : 18
13
Which one of the following taper turning method can be used for cutting internal taper without power feed?
Answer
D. Compound rest swiveling method
14
What is the ratio of standard pin tapers used in Taper pins?
Answer
C. 1 : 50
15
What are the range of Morse tapers used on taper shank twist drills, lathe centers and reamers?
Answer
A. MT0 to MT4
16
Find the amount of taper for a length of 100 mm, if the big diameter is 75 mm and small diameter is 65 mm.
Answer
A. 2:20
17
Determine the amount of Tailstock set over required to turn a taper through 40 mm length from a rod of diameter 30 mm and 80 mm length keeping big diameter 25 mm and small diameter 20 mm.
Answer
B. 05 mm
18
If the diameter of a work piece is increasing or decreasing uniformly, then the ratio of the difference in diameter to its length is termed
Answer
D. Conicity
19
Which one of the following statement should be kept in mind while swiveling the compound rest for taper turning?
Answer
D. Set the compound rest at half taper angle
20
Find the angle of compound rest to be swiveled while turning a taper of big diameter 60 mm and small diameter 20 mm for a length of 20 mm.
Answer
B. 45°
21
The end of twist drill bit shape is
Answer
C. Conical
22
Used to remove a broken tap in a hole
Answer
B. Tap extractor
23
Drill chucks are held on the machine spindle by means
Answer
C. Arbor
24
Which is the formula to find out tap drill size?
Answer
A. Drill size = Tap size − pitch
25
The point angle of general purpose drill is
Answer
D. 118°
26
The angle of BSW thread is
Answer
A. 55°
27
The lead of three start thread of 2 mm pitch is
Answer
B. 6 mm
28
Screw threads are produced without metal removal by a process called as
Answer
C. Thread rolling
29
In screw jacks, the threads used are
Answer
C. Square
30
When an external gear is meshed with an external gear, the gears will rotate in
Answer
B. Opposite direction
31
Which gauge is used to check the internal threads?
Answer
B. Thread plug gauge
32
B.S.F screw threads are generally used for
Answer
A. Electrical goods
33
The depth of indian standard (BIS) thread is
Answer
B. 0.6134 P
34
In thread assembly the contact between the male and female threads takes place on the
Answer
D. Flanks
35
Root diameter of a thread is another name for
Answer
A. Minor diameter
36
Which one of the screw thread elements is NOT checked with the thread ring gauge?
Answer
B. Helix angle
37
Which is the speed ratio of gear train is
Answer
A. N1/N2 = T2/T1
38
A screw thread is formed on a cylindrical surface by cutting
Answer
D. Helical grooves
39
The distance from a given point on one thread to a corresponding point on the next thread is called
Answer
A. Pitch
40
Which type of thread is considered strong and frequently used for power transmission?
Answer
C. Acme
41
The functions of machine tools are i. To hold and support the piece to be machined ii. To hold and support the cutting tools iii. To provide requisite motion to work piece, tool or both iv. To regulate the cutting speed and feed of the tool and work piece
Answer
C. All of the above (i, ii, iii and iv)
42
A centre lathe is specified by i. Width of the bed ii. Face plate diameter iii. Morse taper of centre iv. Maximum swing over the bed
Answer
B. all of the above (i, ii iii and iv)
43
The lathe bed ways are mostly made of closed grained gray cast iron. Its advantage are i. Resist vibration ii. Carbon is in free state which has self lubricating property iii. Can withstand more compressive load iv. It is malleable
Answer
B. only i, ii and iii
44
Which one is not a part of lathe Tail stock?
Answer
D. Pivot hinge
45
The corss slide of a lathe is assembled to the saddle with the help of a
Answer
C. Tapered jib
46
The thumbler gear mechanism in lathe is used for
Answer
B. Changing the direction of rotation of lead screw and feed shaft
47
The figure shows which lathe accessory
Answer
B. Catch plate
48
There is no loss of accuracy as the chuck gets worn out. Which chuck
Answer
A. Four jaw chuck
49
In a coated carbide cutting tool a thin layer of which metal is coated on its surface
Answer
D. Titanium carbide
50
The designation of a carbide inserts are given below 'U' indicates
Answer
C. Tolerance class
51
What is the least count of a vernier Caliper with 50 divisions on the vernier scale?
Answer
D. 0.02 mm
52
What is the reading of a vernier Caliper shown on the figure?
Answer
D. 9.32 mm
53
The accuracy of a digital vernier caliper
Answer
A. 0.01 mm
54
How many number of divisions in the thimble of a micrometer has an accuracy of 0.01mm
Answer
C. 50 Div
55
What is the value of one sub division in a matric micrometer have 50 divisions on the thimble?
Answer
C. 0.5 mm
56
In a metric micrometer the distance moved by the spindle during one complete rotation of the Thimble is
Answer
D. 0.5 mm
57
What is the reading of a micro meter shown in the figure?
Answer
B. 7.22 mm
58
When the anvil and spindle face of a micrometer are in contact if the zero of the thimble rest below the datum line of
Answer
B. Positive error
59
When the anvil and spindle face of a micrometer are in contact if the zero of the thimble rest above the datum line of
Answer
A. Negative error
60
In a digital micrometer LCD displays measuring data and make direct read out with resolution of
Answer
B. 0.001 mm
61
Which of the following statement is/are correct about the factors governing the cutting speed? (i) Rigidity of the work piece (ii) Finish required (iii) Tool geometry
Answer
D. All of the above (i, ii and iii)
62
Which of the following statement is/are correct about the cutting speed? i. The cutting edge passes over the material in one minute ii. The tool moves along the work for each revolution of the work iii. The rate of metal removed from the work in one minute
Answer
A. Only (i)
63
Which part of micrometer, is to ensure uniform pressure between the measuring surfaces
Answer
B. Ratchet stop
64
Which micrometers are designed for the measurement of longer internal lengths?
Answer
C. Stick micrometer
65
What is the cutting speed of dril for drilling aluminium?
Answer
D. 70-100 m/min
66
What is the point angle of drill for drilling brass and bronze?
Answer
A. 118°-140°
67
Which of the following statement is/are correct about the necessity of boring a hole? i. To obtain concentricity of the hole ii. To obtain the rigidity of hole iii. To remove the error formed by drilling, and to facilitate the reaming operation
Answer
C. Only (i and iii)
68
The operation of beveling the end of a drilled hole is called
Answer
D. Counter sinking
69
The diameter of letter drill series 'Z' is
Answer
C. 10.490 mm
70
Which of the following part is/are correct about the hand reamer? i. Bevel lead ii. Land iii. Heel
Answer
B. Only (i and iii)
71
What is the size based on which the dimensional deviations are given?
Answer
A. Basic size
72
Which of the following statement is/are correct about the deviation is zero in shaft basics system? i. Both upper and lower deviation is zero ii. Upper deviation is zero iii. Lower deviation is zero
Answer
C. only (ii)
73
How many fundamental tolerances are there in BIS system?
Answer
D. 18
74
Which type of fit, the tolerance zone of the hole and shaft will overlap each other?
Answer
C. Transition fit
75
_________ is designed with a 'U' slot and an Elliptical slot to accommodate the bent tail of the lathe carrier?
Answer
A. Catch plate
76
Which of the following statement is/are correct about the different types of face plate? i. face plates with elongated radial slots and additional parallel slots ii. face plates with elongated slots and 'T' slots iii. face plates with only elongated radial slots
Answer
D. All of the above (i, ii and iii)
77
Which one of the following lathe accessories can be clamped at any desired position on the lathe bed by the base clamping screw?
Answer
B. Fixed steady rest
78
Which type of lathe centre is used while facing the job without disturbing the setting?
Answer
C. Half centre
79
Which of the following mechanism is/are correct about the working of lever type dial test indicator? i. Quick return mechanism ii. Rack and pinion mechanism iii. Lever and scroll mechanism
Answer
D. only (iii)
80
Which of the following tool post is easy for setting the tool centre height of the tool in a lathe?
Answer
A. Universal tool post
81
Which method is used to lubricate the head stock in modern lathe?
Answer
D. Oil pump method
82
Which cutting fluid is used for turning copper?
Answer
B. Soluble oil
83
What is the isolating medium to prevent rapid cooling after brazing a tipped tool?
Answer
B. Mica powder
84
Which mandrel is manufactured in order to reduce the number of mandrels?
Answer
C. Stepped mandrel
85
What type operation is knurling?
Answer
B. Forming
86
In which country the automatically controlled factory was introduced before two centuries?
Answer
D. In Europe
87
What do you mean by ATC preparation of part programming axis convention in CNC machine?
Answer
B. Automatic tool changer
88
Which one of the direction shown by thumb finger in right hand cordinate system?
Answer
D. Direction of 'X' axis
89
Which axis the spindle moves on vertical machining centre?
Answer
A. Z axis
90
What do you mean by MPG?
Answer
B. Manually pulse generator
91
What is the basis of absolute co-ordinate point?
Answer
D. Based on the origin (0.0)
92
How the points are marked in polar co-ordinate system?
Answer
A. Pole as O and polar axis as L
93
Which code is suitable for multiple turning cycle in FANUC CNC control system?
Answer
C. G 71
94
Which mode is used to move the turret in micron level?
Answer
D. Incremental jog mode
95
Which is the operation in point to point system?
Answer
A. Drilling
96
Which of the following feed back devices can sense both speed and position?
Answer
C. Encoder
97
What is the purpose of MDI mode?
Answer
B. Move the axis by manually
98
What is the M in the ISO designation for the lathe tool holder?
Answer
A. Holder length
99
What is 'N' in ISO standard for specifying tool insert, for example CNMG120408?
Answer
D. Relief angle
100
What will be displayed on the screen which simulation?
Answer
B. Graph of the component
Discussion
Ask a doubt or share a tip.
No comments yet — start the discussion.