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Elements_05
  • Jacky Shane Luyas Buhia

  • 問題数 50 • 5/19/2024

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    問題一覧

  • 1

    A mechanism that usually do the indexing in a machine tool:

    C. Dividing head

  • 2

    The smallest area at the point of rupture of a tensile specimen divided by the original area is called:

    D. Percentage reduction of area

  • 3

    The property that characterizes a material ability to be drawn onto a wire:

    A. Ductility

  • 4

    Which of the following is not pertaining to the joining of metals?

    C. Casting

  • 5

    Which of the following is not a heat treatment process?

    A. Sintering

  • 6

    An instrument used to analyse the composition of metals:

    A. Spectrometer

  • 7

    Non-ferrous filler metal is melted into grooves or as fillet on the mother metal; the base metal is not melted. This is commonly used for joining iron based machine parts or in repair works of some materials. It is called:

    B. Braze welding

  • 8

    What is the common shop practice to prevent solder from running way from surface to be joined?

    D. All of these

  • 9

    The product of the resultant of all forces acting on a body and the time that the resultant acts:

    C. Linear impulse

  • 10

    How do you call a load that is applied transversely to longitudinal axis of member?

    C. Bending load

  • 11

    Which of the following is a unit of energy?

    A. Ft-lb

  • 12

    A hydrostatic bearing is one which:

    A. Lube oil is supplied under pressure

  • 13

    An externally threaded fastener intended to be used with nut is said to be a:

    A. Bolt

  • 14

    What is the other term for the Maximum-Shear-Stress Theory, as a failure prediction theory?

    B. Tresca yield criterion

  • 15

    What is a form of correction that develops on highly localized areas on a metal surface?

    D. Apitting

  • 16

    What are the stated maximum and minimum directions?

    B. Limits

  • 17

    In a lathe machine, how do you call the diameter of the largest workpiece that can be rotated in a chuck or between centers without hitting the bed?

    B. Swing

  • 18

    What do you call a type of bolt threaded on both ends and can be used where a through bolt is impossible?

    C. Stud bolt

  • 19

    A flexible coupling consists of essentially of two chain sprockets connected with short continuous length of roller or silent chains.

    A. Chain coupling

  • 20

    The most known lubricants being utilized in whatever category of load and speed are oil, air, grease and dry lubricants like:

    D. Graphite

  • 21

    Steel containing large amounts of mild nickel and chromium:

    C. Stainless steel

  • 22

    A kind of bolts which has no head an instead has threads on both ends.

    A. Stud bolts

  • 23

    A kind of chuck which has reversible jaws which could be adjusted separately.

    B. Independent chuck

  • 24

    A tool which when pressed into a finished hole in a piece of work, provides centers on which the piece maybe turned or otherwise machined.

    C. Mandrel

  • 25

    A machine tool is a power-driven machine, capable of

    D. doing all the above functions

  • 26

    Dovetail ways are used in

    C. milling machines

  • 27

    A kinematic chain needs a minimum:

    C. 4 links and 4 turning pairs

  • 28

    How many links are there in a pantograph?

    B. 4

  • 29

    Which of the following is the best process for butt welding of two plates each of which is 25 mm thick?

    A. Electro slag welding

  • 30

    What tool is used in foundry for repeating the mould?

    A. Swab

  • 31

    The column splice is used for increasing:

    B. Length of the column

  • 32

    A cone formed by elements which are perpendicular to the elements of the pitch cone at the large end

    B. Back cone

  • 33

    A gear is one in which angle is 90 degrees that is the pitch cone has become a plane

    A. Crown gear

  • 34

    A material that should be avoided in constructing wood pattern:

    A. Sap wood

  • 35

    What is the moment of inertia of a rectangle about its base?

    B. bh³ / 3

  • 36

    The hardness of steel increases if it contains:

    A. Martensite

  • 37

    How do you call a steel with 0.8% carbon and 100% pearlite?

    D. Eutectoid

  • 38

    What is the range of the tensile strength of common varieties of cast iron?

    B. 150 - 180 Mpa

  • 39

    Fatigue failure occurs when a part is subjected to:

    D. Fluctuating stress

  • 40

    Paramagnetic alpha iron changes to gamma iron at what temperature?

    B. 910°C

  • 41

    The diameter of the washer is generally:

    B. Slightly more than the diameter of the bolt

  • 42

    The compression members tend to buckle in the direction of:

    C. Least radius of gyration

  • 43

    A kinematic chain needs a minimum:

    C. 4 links and 4 turning pairs

  • 44

    Which of the following pairs is formed if shaft is revolving in a bending?

    A. Lower pair

  • 45

    How many links are there in a pantograph?

    B. 4

  • 46

    A pantograph is a mechanism having:

    A. Lower pairs

  • 47

    Which of the following describes the “slip” in belt drive?

    D. Difference between the linear speed of the rim of pulley and the belt on it

  • 48

    Which of the following is the orientation of the axes of the two shafts in cross helical worm?

    D. Non-parallel and non-intersecting

  • 49

    In case of gears the addendum is given by:

    A. One module

  • 50

    How do you call a cam where in the follower reciprocates or oscillates in a plane parallel to its axis?

    C. Cylindrical cam