| Post Name | Lr. IN TOOL & DIE ENGG. - TECH. EDUN. (POLY TECH. COLLEGES) |
|---|---|
| Question Paper Code | 005/2021 |
| Category Code | 005/2019 |
| Date of Test | 6 January 2021 |
| Medium of Question | ENGLISH |
| Exam Type | OMR Examination |
| Total Questions | 100 |
1
If A = , then
Answer
C. 1 2
2
Which of the following is a solution of the system of equations given by
3x + y + 2z = 3
2x – 3y – z = –3
x + 2y + z = 4
Answer
C. x = 1, y = 2, z = –1
3
Coefficient of xy3 in the expansion of (2x – 3y)4 is
Answer
D. –216
4
The value of sin 51º + cos 81º is given by
Answer
A. cos 21º
5
The equation of the line that is parallel to the line 2x + 5y = 7 and passing through the midpoint of the line joining (2, 7) and (−4, 1) is
Answer
A. 2x + 5y − 18 = 0
6
The maximum value of (log x)/x is at
Answer
D. x = e
7
If m is an integer, then the value of .sin2 mx dx is given by
0
Answer
B. 2
8
The equation of the straight line through (2, 3) and making equal intercepts on the axes is
given by
Answer
D. x + y = 5
9
The area bounded by the rectangular hyperbola xy = c² and the x-axis from x = π to x = 2π is:
Answer
B. c² log 2
10
Solution of the differential equation sin x · dy/dx + y cos x − 1 = 0 is
Answer
A. y sin x = x + C
11
The principle of work from whole to part in surveying is to ensure that
Answer
D. errors of one portion does not affect other.
12
In levelling, a station is a point, where
Answer
A. levelling staff is placed
13
Separation of water on fresh concrete is known as
Answer
C. bleeding
14
The unique property of steel by virtue of which can be drawn into thin wires is called
Answer
B. ductility
15
Finishing mortar joints after completion of masonry wall is known as
Answer
B. pointing
16
Pelton wheel turbine is :
Answer
C. Tangential flow turbine
17
How many valves are there in a two stroke engine ?
Answer
D. None of these
18
The most common balanced engine firing order for a six cylinder in line engine is :
Answer
D. 1-5-3-6-2-4
19
When the clutch is engaged, the spring pressure clamps the friction plate between the
pressure plate and
Answer
A. Flywheel
20
The thermodynamic cycle used in a steam turbine based thermal power plant
Answer
B. Rankine cycle
21
A 10V supply is applied across a 5 ohm resistor. The current and power will be
Answer
C. 2A, 20W
22
In a resistance network ABC a 2 ohm resistor is connected from A to B, two resistors 6
ohm and 3 ohm both connected between B and C and a 4 ohm resistor between A and C.
The effective resistance between A and C will be
Answer
B. 2 ohms
23
The electrical energy consumption of a domestic consumer is measured in
Answer
D. kWh
24
An RLC series circuit has a resistance of 12 ohms inductive reactance of 7 ohms and
capacitive reactance of 2 ohms. The effective impedance of the circuit is
Answer
B. 13 ohms
25
The device which gives protection from electrical shock is
Answer
A. RCCB
26
The minimum voltage required to establish regulation in 7805 IC is
Answer
C. 7.3 V
27
A solid state relay uses the following for electrical isolation
Answer
B. Opto coupler
28
Size of RAM and ROM in 8051 microcontroller is
Answer
A. 128 bytes & 4 K bytes
29
The CDMA reverse channel employs the following modulation technique.
Answer
D. OQPSK
30
Which of the following UPS has highest efficiency ?
Answer
A. Standby
31
_______ mechanism operating on the upstroke of a press, which ejects workpiece on
blanks from a press tool.
Answer
D. Knockout
32
Pilots are heat treated to a hardness of HRC
Answer
A. 57 – 60
33
In a progressive die, the tonnage of a press can be reduced by
Answer
D. Staggering the punches
34
A moving mandrel is used in
Answer
B. Tube drawing
35
In blanking the clearance provided is
Answer
C. On punch
36
Metal extrusion is generally used for producing
Answer
C. Uniform hollow and solid section
37
Blanking and punching operations can be performed simultaneously on
Answer
B. Compound die
38
The rivet hole diameter for a rivet having diameter 14 is
Answer
C. 15
39
Injection moulding is a process used for processing
Answer
D. Plastics
40
Thermoplasts are joined by process called
Answer
Question Cancelled
41
In cold chamber diecasting process only non-ferrous alloys with ________ melting point
are cast.
Answer
C. high
42
The bottles from thermoplastic materials are made by
Answer
D. Blow moulding
A 7 005/2021
43
Addition of magnesium to cast iron increases its
Answer
A. Ductility and strength
44
Chills are used in moulds to
Answer
A. Achieve directional solidification
45
Hot chamber process is suitable to cast
Answer
D. Tin
46
The process used to reduce hardness of steel is
Answer
B. Annealing
47
In MS the percentage of carbon is ranging from
Answer
A. 0.05 – 0.30
48
The 18 : 4 : 1 tool steel is
Answer
B. HSS
49
Deoxidising agent for steel is
Answer
C. Manganese
50
Copper is added in steel for improving
Answer
B. atmospheric corrosion
51
Toughness of a material is measured by means of
Answer
C. Impact testing
52
From the following identify the extreme hardened steel.
Answer
A. Martensitic
53
VTⁿ = C is _______ tool life equation
Answer
A. Taylor
54
The temperature of carburising flame in gas welding is _______ that of oxidising flame
Answer
A. lower
55
Fluxes are used while welding
Answer
D. All of the above
56
In reaming process
Answer
D. High dimensional accuracy obtained
57
With reference to NC machine which of the following statement is wrong ?
Answer
C. Post processor is an item of hardware.
58
In a single point turning operation of steel, with a cementide carbide tool, Taylor tool life
exponent is 0.25. If the cutting speed is halved, the tool life will increase by
Answer
D. 16 times
59
Liner and slip bushes are a part of
Answer
B. Drill Jigs
60
T-T-T diagram indicates time, temperature, transformation of
Answer
D. Austenite
61
Machine tool guide ways are usually hardened by
Answer
A. Flame hardening
62
Plug gauges are used to check
Answer
B. Holes
63
Micrometers are calibrated with
Answer
D. Slip gauges
64
Sine bar is used to measure
Answer
A. Angles
65
Talisurf is to measure
Answer
B. Surface finish
66
Arrange the given materials in increasing order of their Young's modulus of elasticity :
(i) Stainless Steel;
(ii) Tungsten Carbide;
(iii) Aluminium;
(iv) Cast Iron
Answer
C. (iii) (iv) (i) (ii)
67
A steel bar 1m long and 20 mm × 10 mm cross-section is subjected to a tensile load of
10 kN along its longitudinal axis. If the modulus of elasticity is 2 × 10 5 N/mm2 and
Poisson’s ratio is 0.3, the lateral strain is:
Answer
B. 0.075 × 10–3
68
Which of the following statements is not true about static friction ?
Answer
D. The force of friction is dependent on the area of contact between the two
surfaces.
69
The section modulus for a beam of circular section with diameter ‘d’ is:
πd 3 πd 3
Answer
A. —
70
A weld made to hold parts of a weldment in proper alignment until the final welds are
made is called
Answer
D. Tack weld
71
In case of a circular shaft, the torque divided by the angle of twist per unit length is called
Answer
B. torsional rigidity
72
Given that the pressure is 3 kg/cm2, the equivalent height of water column is
Answer
A. 30 m
73
When the metacentre is lower than the centre of gravity of the floating body, the body is
said to be in a state of
Answer
C. Unstable equilibrium
74
An imaginary line in the fluid, the tangent to which at any point gives the direction of
motion at that point is termed as
Answer
D. Stream line
75
If the density and the specific volume of the fluid does not change during the flow, the
flow is called
Answer
B. Incompressible flow
76
Which of the following statements is not true in case of a venturimeter ?
Answer
C. The maximum cone angle of the diverging area is more than that of the
converging area
77
If θ is the angle of a triangular notch in degrees, C_d is the coefficient of discharge, g is acceleration due to gravity and H is the height of liquid above the apex of the notch, the discharge over the notch is given by:
Answer
A. (8/15) C_d √(2g) tan(θ/2) H⁵ᐟ²
78
The head loss due to friction in a pipe of 1 m diameter and 10 km long in which the water is flowing at a velocity of 1 m/s is _______ (Take coefficient of friction as 0.005 and g as 10 m/s²).
Answer
D. 10 m
79
Which of the following types of casings are used to enclose the impeller in a centrifugal
pump ?
Answer
D. All of these
80
The theoretical and actual discharge of a reciprocating pump are 200 litres/min. and
190 litres/min. respectively. The slip of the pump is
Answer
B. 5%
81
Which of the following types of turbines is used under a head of 200m and the specific
speed of 30 rpm ?
Answer
C. Pelton wheel
82
Which of the following is a device used in hydraulic systems to store pressure energy and
reduce pulsations ?
Answer
A. Hydraulic accumulator
83
‘Lack of specialization’ is a major limitation of the following type of organization
structure
Answer
A. Line organization
84
Select the option which correctly matches the following :
Answer
B. Fair wage (ii) also called money wage
85
Which of the following is the main focus of Total Quality Management ?
Answer
D. All of these
86
In PERT, the activity duration is assumed to have the following distribution
Answer
C. Beta
87
The difference between the Latest finish time of activity under consideration and the
Earliest start time of the following activity is called
Answer
A. Interfering float
88
In LPP, if one of the basic variables takes on a zero value, then the basic feasible solution
is called
Answer
B. Degenerate solution
89
Which of the following methods is not used for obtaining the initial basic feasible
solution of a transportation problem ?
Answer
C. Modified-Distribution method
90
Consider the following payoff matrix for a game.
Player B
Player A
B1 B2 B3
A1 –1 1 –2
A2 5 3 –6
The saddle point of the game is
Answer
D. –2
91
A record showing receipt, issue and physical balance of materials along with maximum
and minimum quantity to be held in stock and re-order level is called
Answer
B. Bin Card
92
The production system which is characterized by small production lot size and high
product variety is
Answer
A. Job order production
93
A product produced by a firm is sold for ` 10 per unit. The fixed cost of the assets is
` 60000 with a variable cost of ` 4 per unit. The number of units to be produced to reach
break-even is
Answer
C. 10000
94
Identify the therblig indicated by the symbol
Answer
B. Assemble
95
Which of the process chart symbols indicates ‘storage’ ?
Answer
D.
96
Which of the following rule does not form a part of principles of motion economy ?
Answer
C. The work pieces and work place should not have color contrast.
97
Which among the following control charts is used for variables ?
Answer
A. R-chart
98
For an asymmetrical distribution, the relationship between mean, median and mode is
given by
Answer
B. Mode = 3 Median – 2 Mean
99
With reference to Euler’s equation for crippling load, the relation between effective length (L) and actual length (l) for the column with one end fixed and other end hinged is
Answer
D. L = l/√2
100
The hydraulic circuit in which the flow control valve is used to divert the fluid to the
reservoir is
Answer
C. Bleed-off control circuit
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