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MD terms #1 (SUREPASS)
  • Nikku Lodeon

  • 問題数 71 • 11/9/2023

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    問題一覧

  • 1

    Which of the following mechanism represents an inversion of a single slider crank chain?

    Whitworth quick return mechanism

  • 2

    What is a unique form of cast iron with worm shaped graphite particles?

    Compacted graphite iron

  • 3

    What is the process of making Bolt heads by forging?

    Upsetting

  • 4

    What do you call the difference between the higher limit and lower limit of size?

    Tolerance

  • 5

    Which of the following is the major alloying element in invar?

    Nickel

  • 6

    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

  • 7

    Which of the following superalloys is age-hardenable?

    Nimonic

  • 8

    __________ is the range of working temperature for soldering process.

    180°C to 250°C

  • 9

    How are fullers used?

    Forming Necks or grooves on cross section of a job

  • 10

    Which of the following is an example of drilling?

    Oblique Cutting

  • 11

    __________ is also known as tube mills and are commonly used for wet grinding

    Agitator ball mills

  • 12

    Which of the following device is used for transmitting energy in CNC Machine tools?

    Recirculating ball screw and nut assembly

  • 13

    Aluminum is particularly satisfactory for applications requiring all of the following characteristics except _________

    High Strength

  • 14

    ____________ Is a polymer of chloroprene of the monovinyl acetylene type.

    Neoprene

  • 15

    Why are Plasticizers added to plastics?

    To increase flexibility of materials

  • 16

    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

  • 17

    The Train Value of a Gear Train is__________

    Reciprocal of the speed ratio

  • 18

    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

  • 19

    Kevlar epoxy composite is widely used in __________

    Automobiles

  • 20

    An interrupted quenching process resulting in an austenite to martensite transition is _______.

    Martempering

  • 21

    When crank rotates with uniform speed, it has _________ acceleration only.

    Radial

  • 22

    Hand shears can be used for cutting sheets up to _________.

    1.6mm

  • 23

    The moment diagram for a cantilever beam subjected to bending moment at the end of beam will be ________.

    Rectangle

  • 24

    For a simply supported beam on two end support the bending moment is maximum

    Where there is No Shear

  • 25

    Generally, In case of pure bending moment is constant throughout and the shear force is

    Always Zero

  • 26

    Which type of key is used for mounting shifting gears in gear boxes?

    Spline

  • 27

    Hard shifting of gears is due to

    Worn out splines on the main shaft

  • 28

    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

  • 29

    Guest’s Theory of failure is applicable for following type of materials

    Ductile

  • 30

    Rankine Theory of failures is applicable for the following type of materials

    Brittle

  • 31

    Idler Pulley is used for

    For applying tension

  • 32

    The Motion of a shaft in a circular hole is an example of ________

    Incompletely Constraint

  • 33

    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

  • 34

    Which of the following thermit welding procedure welding procedures, produced high temperature?

    Exothermal chemical reaction

  • 35

    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

  • 36

    What account for the backlash of spur gears?

    Both module and pitch line velocity

  • 37

    A cotter joint is used to connect two __________ rods.

    Co-axial

  • 38

    The rated life of a bearing varies

    Inversely as cube of load

  • 39

    The center to center distance between two consecutive rivets in a row, is called

    Pitch

  • 40

    When more than one spring or resisting member shares the load, the relative stiffness is the _______.

    Modulus of Elasticity

  • 41

    Which of the following is a single crystal grown by vapor disposition?

    Glass

  • 42

    Mechanical impact device that accepts accept material smaller than approximately 4 inches.

    Mechanical impact mills

  • 43

    Which of the following occurs whenever is a disconuity or non-uniformity in an object?

    Stress Concentration factor

  • 44

    A hard Material __________

    Exhibit high modulus of elasticity

  • 45

    Which of the following is one of the best methods for increasing a spring fatigue’s life?

    Shotpeening

  • 46

    The Distortion energy theory is known as _________.

    Von Mises Theory

  • 47

    Which type of gears are used for shaft axes having an offset?

    Hypoid gear

  • 48

    Surface hardening is desirable for a product that is subject to ______.

    Fatigue

  • 49

    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

  • 50

    If the value of theoretical stress concentration is 1.0, then the value of fatigue stress concentration factor is equal to

    1

  • 51

    Stress concentration in static loading having high influence in ____.

    Brittle materials

  • 52

    Notch Sensitivity varies between

    0 - 1

  • 53

    A force which is gradually applied and does not change in magnitude and direction with respect to time is called ______.

    Static Load

  • 54

    _______ is defined as the maximum stress to which a material can be subjected without fatigue, regardless of the number of cycles.

    Endurance limit

  • 55

    _______ 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

  • 56

    What is the most suitable material in TIG welding process

    Alloy Steels

  • 57

    Fixing of both ends of simply supported beam that has only concentrated load at the midspan will increase the allowable load by ________.

    50%

  • 58

    Spring back metal forming depends on _______.

    Modulus of Elasticity

  • 59

    In order to get uniform thickness of the plate by rolling process, one provides

    Chamber on roll

  • 60

    What is the results when mers join with a high degree of regularity in chain structure and mer orientation

    Isotactic polymer

  • 61

    When column is subjected to an eccentric load, the stress induced in the column will be ______

    Both direct and bending stress

  • 62

    A lap joint is always in _________ shear.

    Single

  • 63

    The columns whose slenderness ratio is less than 80, are known as

    Short columns

  • 64

    The angle of twist of shaft is

    Inversely proportional to (shaft diameter)4

  • 65

    The strap end of a connecting rod of steam engine is joined by

    Gib of cotter joint

  • 66

    Transverse fillet welded joints are designed for

    Tensile strength

  • 67

    Stress Concentration factor is caused due to

    All of the above

  • 68

    Wahl's stress factor __________ very rapidly as the spring index decreases.

    Increase

  • 69

    In the levers of first type, the mechanical advantage is ________ one.

    More than

  • 70

    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

  • 71

    In leaf springs, the longest leaf is known as

    Master leaf