| Post Name | Assistant Professor in Production Engineering-Technical Education Engineering Colleges |
|---|---|
| Question Paper Code | 019/2021/OL |
| Category Code | 481/2019 |
| Date of Test | 12 December 2022 |
| Medium of Question | ENGLISH |
| Exam Type | Online Examination |
| Total Questions | 100 |
1
The eigen values of 4 × 4 matrix [A] are given by 2, 3, 5 and 7. Then the value of the determinant of the matrix [A] is
Answer
B. 210
2
If u = log[(x⁵ + y⁵)/(x² + y²)], then the value of x ∂u/∂x + y ∂u/∂y is
Answer
D. -3
3
For the function f(z) = (sin z)/z⁴ of a complex variable z, the point z = 0 is
Answer
B. a pole of order 3
4
Let r⃗ = xi + yj + zk and r = |r⃗|. Then ∇ log r is
Answer
A. r⃗/r²
5
Particular integral of (𝐷 —3D + 2) y =𝑒 is 2�
Answer
C. 𝑥𝑒 2�
6
The resultant of two concurrent coplanar forces of equal magnitude P each making an angle of 90° is given by
Answer
B. √2𝑃
7
The necessary condition for equilibrium of a set of coplanar non-concurrent forces are
Answer
D. ΣH = 0, ΣV = 0, ΣM = 0
8
The point of contraflexure in a beam is the point where
Answer
C. Only bending moment is zero or changes sign
9
The following ingredient impart quick setting property to cement
Answer
A. Alumina
10
The height of instrument in levelling is defined as
Answer
C. Reduced level of line of collimation
11
For a Francis Turbine, the flow ratio, 𝐾𝑓 ranges from
Answer
A. .1 to .45
12
Which one is a path function ? (i) Enthalpy (ii) Entropy (iii) Specific heat
Answer
Question Cancelled
13
Negative slip in a reciprocating pump can be due to
Answer
A. Long suction pipe
14
In the turning of cast iron with HSS tool, type of chip formed is (i) Continuous (ii) Continuous with built up edge (iii) Segmental
Answer
C. Only (iii) is true
15
In carbon arc welding
Answer
A. Carbon is negative electrode
16
A 10 V battery is connected to a 5 A current source (Current enters at the positive terminal of the battery). Power absorbed by the battery and the current source are
Answer
B. 50 W, –50 W
17
Form factor of full rectified sinusoidal voltage is
Answer
B. 1.11
18
A 10 KVA, 2500/250 V single phase transformer has the test results as O.C Test : 250 V, 0.8 A, 50 W S.C. Test : 60 V, 3 A, 45 W : Load KVA at maximum efficiency is
Answer
D. 6.25 KVA
19
A 7 KW, 400 V, three phase 50 Hz., 6 pole squirrel cage induction motor operates at 5% slip at full load, when rated voltage at rated frequency is applied. Assuming linear T-S characteristics, No load speed (for torque 6 Nm) at half the rated voltage and rated frequency is
Answer
C. 983
20
For a synchronous motor, the counter e.m.f. Eb in magnitude will be
Answer
D. Either less than or equal to or more than the applied terminal voltage
21
A conducting diode is reverse biased at time t = 𝑇1 . A measurement of current through the diode is made at three different time instants along the positive time axis at t = 𝑇1 , 𝑇2 and 𝑇3 . Select the correct statement about the diode current.
Answer
D. The current reverses at t = 𝑇1 and continues as such till t = 𝑇2 and then reaches the reverse saturation current at time t = 𝑇3 where the interval 𝑇2 to 𝑇3 is called the transition time
22
Assume a half-wave rectifier that uses a transformer with maximum voltage 𝑉� . The peak inverse voltages of the half-wave rectifier with and without a capacitor fiter are _____ and _____ respectively.
Answer
C. 2𝑉� , 𝑉�
23
A transistor used as an emitter follower has
Answer
C. Voltage gain close to unity, high input resistance, low output resistance, 0 degree phase shift between input and output
24
A Wien bridge oscillator circuit with an operational amplifier as the active element has a resistor 𝑅1 connected from the opamp output terminal to inverting input terminal and a resistor 𝑅2 connected from the inverting input terminal to ground. Assume 𝑅1 and 𝑅2 are selected to meet the conditions for oscillation. The amplitude of oscillation can be stabilised by
Answer
A. Using a sensistor as 𝑅2
25
Assume we need to ensure at least 50 cycles of carrier in Amplitude Modulation (AM) for an audio signal with spectrum extending from 20 Hz to 20 kHz. The AM radio carrier can be selected to have a typical value of
Answer
B. 1000 kHz
26
Which of the following constitutes the central processing unit of a computer ?
Answer
A. Control Unit, Arithmetic Logic Unit
27
The data used for computer processing is usually represented in a particular format. Which of the following is the format used ?
Answer
A. Binary Coded Decimal
28
Which of the following represents a Loop structure in C ?
Answer
A. Only (c)
29
What is the output of the following code ? void main() { int i, j; for(i=1;<=10;i++); for(j=1;j<=10;j++) printf("%d\n",i+j); }
Answer
Question Cancelled
30
What is the output of the following code ? #include int fact(int); void main() { int sum; sum=fact(1)/2+fact(2)/3+fact(3)/4+fact(4)/5+fact(5)/6; printf("The sum of the series is : %d\n\n",sum); } int fact(int n) { int num=0,f=1; while(num<=n-1) { f=f+f*num; num++; } return f; }
Answer
D. 25
31
The vertical passage through which the molten metal flows downward is called
Answer
B. Sprue
32
The metallic objects of high heat capacity and high thermal conductivity which are placed in the mold is termed as
Answer
C. Chills
33
The pattern used for the mass production of small castings is
Answer
D. Gated pattern
34
The tapering of the sides of the pattern is known as _____ allowance.
Answer
A. Draft
35
The defect that occurs on the flat surface of a casting due to the thermal expansion of moulding sand is termed as
Answer
D. Scabs
36
The defect caused by the enlargement of the mould cavity after the metal has been poured is
Answer
B. Swell
37
A chaplet is used to
Answer
C. Support the core
38
Investment casting method is used when the size of the casting is _______ in size.
Answer
D. small with intricate shape
39
Railway rails are repaired by which of the following welding method ?
Answer
A. Thermit welding
40
Which among the following welding process is not a fusion process ?
Answer
B. Resistance welding
41
Light aluminium sheets are joined by
Answer
A. TIG welding
42
Presence of sulphur in the welded joint increases its
Answer
B. Brittleness
43
Carburizing gas flame is due to the excess presence of
Answer
C. Acetylene
44
Which of the following forging operation is also known as precision forging ?
Answer
D. Flashless forging
45
The main body of the cutting tool is termed as
Answer
D. Shank
46
_____ forms the surface below and adjacent to the cutting edge.
Answer
A. Flank
47
A tool signature of a single point cutting tool consists of ______ numbers of angles and a nose radius.
Answer
C. 6
48
Continuous chips are produced while machining ________ materials with carbide tools operating at higher cutting speeds.
Answer
B. Ductile
49
Feed is expressed in the unit as _________ in lathe turning operation.
Answer
D. mm/revolution
50
Taylor's tool life equation is �
Answer
B. 𝑉𝑇 = 𝐶 �
51
Which among the following process is a chipless operation ?
Answer
D. Knurling
52
Which among the following is least hard abrasive ?
Answer
A. Aluminium oxide
53
Major component of ceramic tool is
Answer
D. Aluminium oxide
54
CBN stands for
Answer
B. Cubic Boron Nitride
55
Which among the following part is not associated with an engine lathe ?
Answer
B. Arbor
56
The time (t) required for machining a workpiece of length 'L' mm in engine lathe is calculated by the formulae __________ (where s = feed, n = speed).
Answer
D. L/(s × n)
57
Whitworth's quick return motion mechanism is associated with ________ machine.
Answer
C. Shaping
58
Which among the following process required vacuum for the machining action ?
Answer
C. Electron beam machining
59
An ideal ______ system applies computer technology to all the operational functions and information processing functions in manufacturing.
Answer
D. CIM
60
When dynamism is introduced for digital mock-up technology, it becomes
Answer
B. Virtual prototyping
61
The input for the rapid prototyping is
Answer
D. CAD model
62
Which among the following is not a powder based rapid prototyping process ?
Answer
A. Fused deposition modelling
63
Which word is used to identify the block in NC machines ?
Answer
D. N - word
64
Which among the following word is used to prepare the controlling unit for the operating instructions ?
Answer
C. G - word
65
NC machine tools falls under the category of
Answer
B. Flexible automation
66
The purpose of T-word in a block is to specify
Answer
B. Tool selection
67
When specifying the axes of a CNC machine tool, the spindle axis is considered as
Answer
C. Z - axis
68
Programmable automation is suitable for
Answer
D. High production volumes and large part varieties
69
Which of the following method is used to form part families ?
Answer
Question Cancelled
70
In optiz code, the form code consists of
Answer
C. 5-digits
71
Cellular manufacturing uses the information of
Answer
B. Parts classification and coding
72
A group of closely located workstations where multiple sequence of operations are performed is known as
Answer
C. Machine cell
73
The number of instantaneous centres of rotation for a six link mechanism is
Answer
D. 15
74
The angle at any point in the pitch curve of the cam included between the normal to that point on the curve and line of motion of the follower at that instant is known as
Answer
C. Pressure angle
75
For spring controlled governors, the controlling force curve would be
Answer
A. Straight line
76
The ratio of number of teeth to the pitch circle diameter is called
Answer
B. Diametral pitch
77
In a critically damped vibrating system with single degree of freedom, the damping factor should be equal to
Answer
B. 1
78
The primary unbalanced force in reciprocating masses is
Answer
A. Directly proportional to the crank radius
79
The first standard evolved in Great Britain to standardise limits and fits is
Answer
A. Newall system
80
Which among the following fit is a transition fit ?
Answer
D. Push fit
81
Repeatability of a measuring process is
Answer
A. Precision
82
The process of making the slip gauge blocks adhere is called
Answer
D. Wringing
83
Which among the following is not a mechanical comparator ?
Answer
D. Zeiss optimeter
84
Irregularities caused due to vibrations of any kind such as chatter marks are classified under
Answer
B. Second order
85
The principle behind the operation of which instrument is based on trigonometry
Answer
D. Sine bar
86
Which among the following is not the component of surface texture ?
Answer
B. Flatness
87
Who's work in the field of scientific management led to the science of ergonomics and industrial psychology ?
Answer
C. Gilbreth
88
The tool that provides a visual representation of what occurs over the course of a project is
Answer
D. Gantt chart
89
The chart which indicates the closeness of the pairs of department, depending upon the activities is
Answer
B. REL chart
90
A chart in which therbligs are used for operators movements of left and right hand is
Answer
A. SIMO chart
91
Which among the following is an example for the control charts for attributes ?
Answer
D. p-chart
92
Process capability is represented as
Answer
D. 6σ’
93
Which among the following is an example for the control chart for variables ?
Answer
B. R-chart
94
'Crashing' is the term associated with
Answer
D. Network analysis
95
Hungarian algorithm is associated with ________ problems.
Answer
B. Assignment
96
Six sigma values denotes the ________ in statistical quality control.
Answer
A. Process capability
97
Which among the following term is not connected with the events in network analysis ?
Answer
D. Dummy
98
Critical path method of project network analysis is ______ method.
Answer
A. Activity oriented
99
PERT network analysis is most suitable for the projects like
Answer
D. Research and development
100
The term 'lead time' is associated with _________ management.
Answer
C. Inventory
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