| Post Name | LECTURER IN TOOL AND DIE ENGINEERING - GOVT. POLYTECHNIC |
|---|---|
| Question Paper Code | 170/2025 |
| Category Code | 095/2025 |
| Date of Test | 17 December 2025 |
| Medium of Question | ENGLISH |
| Exam Type | OMR Examination |
| Total Questions | 100 |
1
Sum of Eigen values of 0 2 7 is :
0 0 5
Answer
C. 10
2
What is the value of k, the system of equations x + y + 3z = 0 , 4 x + 3 y + kz = 0 ,
2x + y + 2z = 0 have a non trivial solution?
Answer
D. 8
3
The area of the region bounded by the curves y² = y − x and x + y = 0 is:
Answer
B. 4/3
4
The general solution of the differential equation d²y/dx² − 4 dy/dx + 4y = 0 is:
Answer
A. y = (A + Bx)e²ˣ
5
What is the value of ∂w/∂v when u = 0, v = 0 if w = x² + (y/x) ln x, x = u − 2v + 1 and y = 2u + v − 2?
Answer
Question Cancelled
6
The general solution of the differential equation x²y″ − 7xy′ + 16y = 0 is:
Answer
D. y(x) = C₁x⁴ + C₂x⁴ ln x
7
Solution of ∂²z/(∂x∂y) = x²y subject to z(x, 0) = x² and z(1, y) = cos y is:
Answer
Question Cancelled
8
The order of convergence of Newton Raphson method is :
Answer
C. 2
9
Newton-Gregory Forward interpolation formula can be used :
Answer
B. only for equally spaced intervals
10
A wireframe model represents a solid using :
Answer
D. Edges, vertices and curves
11
For a screw jack with mean radius r, pitch p and friction coefficient μ , the efficiency
increases when :
Answer
C. friction angle φ decreases
12
A wedge is pushed under a block very slowly, The block moves up.
Friction on the block from the wedge is:
Answer
B. Down the plane
13
For V-belt drives, the frictional holding capacity increases due to :
Answer
B. Groove angle
14
The load torque in an electrical drive generally :
Answer
C. Depends on speed and load nature
15
For an induction motor drive, slip becomes negative during :
Answer
C. Regenerative braking
16
For a centrifugal pump operating at constant speed, if impeller diameter is increased by
10%, the head developed increases approximately by :
Answer
B. 21%
17
Hydraulic efficiency is connected with :
Answer
D. Losses Impeller friction and eddy losses
18
Compared to centrifugal pumps, screw pumps have :
Answer
A. Much lower NPSH_required
19
Which motion profile gives zero jerk start and end?
Answer
C. Cycloidal motion
20
High-performance crankshafts are typically :
Answer
A. Forged medium-carbon steel
21
For a centrifugal pump, the head-discharge curve typically is :
Answer
B. Head decreases with discharge
22
The slope of a system curve is proportional to :
Answer
Question Cancelled
23
For a pump running at constant diameter, doubling the RPM will change the developed
head by :
Answer
B. 4 times
24
A fan load has torque proportional to:
Answer
B. T ∝ ω²
25
For a DC shunt motor, the natural speed-torque curve is :
Answer
A. Nearly horizontal
26
Reynolds number is represented as the ratio of inertia force to :
Answer
B. Viscous force
27
For an incompressible viscous flow between parallel plates, the velocity distribution due
to pressure gradient is :
Answer
B. Parabolic
28
The momentum equation for a control volume is based on :
Answer
C. Newton’s second law of motion
29
For irrotational flow, the vorticity is :
Answer
A. Zero
30
The velocity potential function φ satisfies which of the following equations?
Answer
B. Laplace’s equation
31
The CGS unit of kinematic viscosity is :
Answer
C. Stoke
32
Bernoulli’s equation is derived from :
Answer
D. Law of energy conservation
33
For a fillet weld subjected to transverse loading, the maximum stress occurs :
Answer
B. At the throat section
34
The sum of pressure head and potential head is termed as :
Answer
C. piezometric head
35
The throat thickness of a fillet weld is :
Answer
B. 0.707 times the leg length
36
The maximum shear stress theory is also called :
Answer
D. Tresca theory
37
The modulus of resilience is the area under the stress-strain curve up to :
Answer
A. Yield point
38
The ability of a material to absorb energy up to fracture is :
Answer
B. Toughness
39
The shear force at the supports of a simply supported beam with a central point load is :
Answer
C. Half the load
40
The SI unit of stress is :
Answer
C. N/m²
41
A ternary kinematic link is defined as:
Answer
Question Cancelled
42
A higher kinematic pair is formed when :
Answer
B. The pair has a point or line contact between links
43
Equation of motion for a spring mass system with mass m and spring stiffness k is:
Answer
C. mẍ + kx = 0
44
Grashaf’s law determines :
Answer
B. The feasibility of crank rotation in a four-bar chain
45
If the line of movement of follower passes through the centre of rotation of cam such
follower is known as :
Answer
D. Radial follower
46
When a series of gears are connected in such a way that two or more gears rotate about
an axis with same angular velocity, it is known as :
Answer
A. Compound gear train
47
Static balancing requires :
Answer
A. Balancing forces only
48
The length of stroke in shaper can be adjusted by :
Answer
C. Sliding block in bull gear
49
Simple indexing is also called :
Answer
B. Plain Indexing
50
The half-nut mechanism in lathe is essential for :
Answer
D. Thread cutting
51
G/R ratio in material science is related to :
Answer
A. Morphology of solidifying material
52
Which one of the following serve as reservoirs of molten metal to supply any molten
metal necessary to prevent porosity due to shrinkage during solidification?
Answer
B. Riser
53
Among the following metals, which one shows maximum volumetric solidification
contraction?
Answer
C. Aluminium
54
Process of removing dissolved gases from molten metal :
Answer
B. Purging
55
Draft in a rolling process :
Answer
D. increases with both coefficient of friction between roll and strip and
roll radius
56
Which one among the following is/are true with respect to spreading in rolling process?
(i) Spreading is seen in rolling plates and sheets with high width-to-thickness ratios.
(ii) Spreading is characterised by width of the strip remaining effectively constant
during rolling.
(iii) Spreading increases with increase in friction between roll and strip.
Answer
C. Only (iii)
57
Barrelling effect is seen in forging when :
Answer
A. upsetting hot workpieces between cold dies
58
Process of indenting
Answer
C. Piercing
59
Brittle materials can be successfully extruded by :
Answer
C. Hydrostatic extrusion
60
Ideally and without friction, the maximum possible reduction in cross-sectional area per
pass during a drawing process for a perfectly plastic material is approximately :
Answer
D. 63%
61
For straight polarity arc welding, which of the following is/are correct?
(i) the workpiece is positive and the electrode is negative
(ii) weld penetration is deep
(iii) welds are narrow
Answer
A. All are correct
62
Melting away of the base metal and the consequent generation of a groove in the shape
of a sharp recess or notch result in :
Answer
A. Undercutting
63
In order to reduce brittleness and reduce residual stresses, steels hardened by heat
treatment are subjected to :
Answer
C. tempering
64
Process of making an existing hole dimensionally more accurate that can be achieved by
drilling alone and to improve its surface finish :
Answer
C. Reaming
65
Which component of the lathe is used to move the tool radially in and out and to control
its radial position?
Answer
D. Cross slide
66
For a single-point cutting tool, which of the following rake is used for cutting
tough/brittle materials?
Answer
A. Negative rake
67
Which of the following process is used for achieving the sharpness and trueness of the
grinding wheel?
Answer
C. Dressing
68
In a grinding wheel marking system, which of the following is the type-c abrasive
material?
Answer
B. Silicon carbide
69
Which of the following milling cutter is NOT an arbor-mount type?
Answer
B. End-mill cutter
70
In a milling machine, which of the following device is used for machining holes spaced on
a pitch circle diameter?
Answer
Question Cancelled
71
In a drilling process, the chips are guided upward through spiral grooves called :
Answer
C. Flute
72
In a pull-type internal broach, the cutting teeth near the shank of the tool is :
Answer
A. Roughening teeth
73
The property of tool materials against wear due to intense temperature and pressure is :
Answer
A. Red Hardness
74
Which of the following factors are to be considered for the selection of sheet
metal presses?
Answer
D. All of the above
75
Which of the following formula is used for calculating the cutting force of press tools
(S = shear strength, t = thickness, L = length)?
Answer
C. F = StL
76
Which type of press working dies are used for performing multiple operations in a
single station?
Answer
B. Compound Die
77
The operation performed for punching pattern of holes in a sheet metal is called :
Answer
A. Perforating
78
Which of the following method is used for compensating “springback” in sheet metal
operation?
Answer
D. Bottoming
79
The process of removing extra materials from the sheared edges of the sheet metal
is called :
Answer
D. Shaving
80
Beveling of the punch and die surfaces in sheet metal operation is to reduce :
Answer
C. Cutting force
81
Which of the following is used to prevent the lifting of sheetmetal along with the punch
during the upward stroke?
Answer
B. Stripper
82
The property of molding sand to allow hot air and gases to pass through the mold wall
is called :
Answer
C. Permeability
83
In metal casting, which element in the gating system is used for compensating shrinkage
during the solidification process?
Answer
C. Riser
84
The six-point location principle in the design of locators will reduce the degrees of
freedom to :
Answer
A. Zero
85
In the design of a drill jig, which of the following is used for guiding the tool to the
work piece?
Answer
B. Drill bush
86
NC contouring is an example of :
Answer
D. continuous path positioning
87
Which of the following code will give circular interpolation in a clockwise direction?
Answer
B. G02
88
What type of control system adjusts the output based on the rate of change of the input?
Answer
A. Derivative control
89
Plotter accuracy is measured in terms of :
Answer
C. Resolution
90
What is the least count of Vernier calipers?
Answer
A. 0.02
91
What is the use of ‘No Go’ gauges?
Answer
D. Check a single element of a feature
170/2025 13 A
92
Process of wringing in slip gauge is due to :
Answer
Question Cancelled
93
What is the range of bevel protractor?
Answer
A. 0-360°
94
Accurate centering of work mounted in an independent chuck can be determined
by using :
Answer
B. Dial indicator
95
What is the principle of ‘Johannson Mikrokator’?
Answer
D. Button spinning on a loop of string
96
Which of the following is the direct measure of surface finish in Wallace Surface
dynamometer?
Answer
C. Time of swing
97
A tolerance diagram is also called :
Answer
A. Tier chart
98
Which of the following is not the type of FMS?
Answer
C. Flexible tool handling systems
99
Cooperative supply chain relationships developed to enhance the overall business
performance of both parties is a definition of :
Answer
D. dovetailing
100
Which of the following is mandatory in TQM to attain customer satisfaction?
Answer
B. Total employee involvement
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