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問題一覧
1
____________ Is a polymer of chloroprene of the monovinyl acetylene type.
Neoprene
2
Which of the following thermit welding procedure welding procedures, produced high temperature?
Exothermal chemical reaction
3
Idler Pulley is used for
For applying tension
4
When more than one spring or resisting member shares the load, the relative stiffness is the _______.
Modulus of Elasticity
5
It is an age wrought iron which has mechanical properties comparable to those of heat treated alloy steel of the same order of hardness and resistance to corrosion similar to that of monel. What is this alloy of Nickel?
KR Monel
6
In order to get uniform thickness of the plate by rolling process, one provides
Chamber on roll
7
Guest’s Theory of failure is applicable for following type of materials
Ductile
8
__________ is also known as tube mills and are commonly used for wet grinding
Agitator ball mills
9
Which of the following occurs whenever is a disconuity or non-uniformity in an object?
Stress Concentration factor
10
For a simply supported beam on two end support the bending moment is maximum
Where there is No Shear
11
Which of the following key is preferred for the condition when a large amount of impact type torque is to be transmitted in both direction of rotation?
Tangent Key
12
Hand shears can be used for cutting sheets up to _________.
1.6mm
13
What is the results when mers join with a high degree of regularity in chain structure and mer orientation
Isotactic polymer
14
Aluminum is particularly satisfactory for applications requiring all of the following characteristics except _________
High Strength
15
When column is subjected to an eccentric load, the stress induced in the column will be ______
Both direct and bending stress
16
Rankine Theory of failures is applicable for the following type of materials
Brittle
17
__________ is the range of working temperature for soldering process.
180°C to 250°C
18
What is a unique form of cast iron with worm shaped graphite particles?
Compacted graphite iron
19
_______ is defined as the maximum stress to which a material can be subjected without fatigue, regardless of the number of cycles.
Endurance limit
20
What account for the backlash of spur gears?
Both module and pitch line velocity
21
The center to center distance between two consecutive rivets in a row, is called
Pitch
22
For standard coarse threads of nut, the threads will be as strong in failure by shear as the bolt in tension, if the height of nut (h) is approximately
0.4 times
23
An interrupted quenching process resulting in an austenite to martensite transition is _______.
Martempering
24
What do you call the difference between the higher limit and lower limit of size?
Tolerance
25
In the levers of first type, the mechanical advantage is ________ one.
More than
26
Which of the following device is used for transmitting energy in CNC Machine tools?
Recirculating ball screw and nut assembly
27
The Distortion energy theory is known as _________.
Von Mises Theory
28
How are fullers used?
Forming Necks or grooves on cross section of a job
29
A cotter joint is used to connect two __________ rods.
Co-axial
30
A hard Material __________
Exhibit high modulus of elasticity
31
If the value of theoretical stress concentration is 1.0, then the value of fatigue stress concentration factor is equal to
1
32
Which of the following is one of the best methods for increasing a spring fatigue’s life?
Shotpeening
33
Why are Plasticizers added to plastics?
To increase flexibility of materials
34
Wahl's stress factor __________ very rapidly as the spring index decreases.
Increase
35
A force which is gradually applied and does not change in magnitude and direction with respect to time is called ______.
Static Load
36
Which of the following mechanism represents an inversion of a single slider crank chain?
Whitworth quick return mechanism
37
The Train Value of a Gear Train is__________
Reciprocal of the speed ratio
38
In leaf springs, the longest leaf is known as
Master leaf
39
Which type of gears are used for shaft axes having an offset?
Hypoid gear
40
Which of the following is an example of drilling?
Oblique Cutting
41
Hard shifting of gears is due to
Worn out splines on the main shaft
42
The columns whose slenderness ratio is less than 80, are known as
Short columns
43
A planer mechanism has 8 links and 10 rotary joints. Using a Gubler’s criterion, calculate the number of degree of freedom of the mechanism.
1
44
Fixing of both ends of simply supported beam that has only concentrated load at the midspan will increase the allowable load by ________.
50%
45
Which of the following is the ratio of the fatigue strength without a stress concentration to the fatigue stress with a stress concentration.
Fatigue Stress Concentration Factor
46
In sulfuric acid, which of the following is suitable for handling acid in concentrations up to 50% and at a temperature including the boiling point?
Hastelloy B
47
Surface hardening is desirable for a product that is subject to ______.
Fatigue
48
When crank rotates with uniform speed, it has _________ acceleration only.
Radial
49
Transverse fillet welded joints are designed for
Tensile strength
50
The strap end of a connecting rod of steam engine is joined by
Gib of cotter joint
51
Mechanical impact device that accepts accept material smaller than approximately 4 inches.
Mechanical impact mills
52
The angle of twist of shaft is
Inversely proportional to (shaft diameter)4
53
Which of the following is a single crystal grown by vapor disposition?
Glass
54
Which of the following superalloys is age-hardenable?
Nimonic
55
Stress concentration in static loading having high influence in ____.
Brittle materials
56
Which of the following is available in five slightly different nominal composition for applications which require high strength, good fabricating and fusing qualities, immunity to rust, free machining and a corrosion resistance equivalent to copper?
Everdur
57
Kevlar epoxy composite is widely used in __________
Automobiles
58
The moment diagram for a cantilever beam subjected to bending moment at the end of beam will be ________.
Rectangle
59
What is the process of making Bolt heads by forging?
Upsetting
60
Stress Concentration factor is caused due to
All of the above
61
Which type of key is used for mounting shifting gears in gear boxes?
Spline
62
Notch Sensitivity varies between
0 - 1
63
A lap joint is always in _________ shear.
Single
64
Which of the following is the major alloying element in invar?
Nickel
65
Spring back metal forming depends on _______.
Modulus of Elasticity
66
What is the most suitable material in TIG welding process
Alloy Steels
67
The rated life of a bearing varies
Inversely as cube of load
68
Generally, In case of pure bending moment is constant throughout and the shear force is
Always Zero
69
_______ is defined the localization of the high stresses due to the irregularities present in the component and abrupt changes to the cross section.
Stress Concentration
70
The Motion of a shaft in a circular hole is an example of ________
Incompletely Constraint
71
The angle between the line of stroke (line of motion of the follower) and the normal to the pitch curve at any point is preferred to as ______ angle.
Pressure