MD ELEMENTS 17

1. For large speed ratio and large sprocket utilized
   it is recommended cast __ material
   since the large sprocket teeth are having fewer engagements.
   A. alloyed steel
   B. high treated steel
   C. iron
   D. malleable iron

C. iron

2. Roller bearing is utilized on __ carrying capacity
   and is better than ball in this condition.
   A. Heavy load
   B. high temperature load
   C. low load
   D. revolving load

A. Heavy load

3. To enhance mechanical properties, fabrication
   characteristics or any other attributes of steel,
   some elements are added in melting of specific
   ranges or minimum aside from carbon and
   generally termed:
   A. Alloy steel
   B. AISI steel
   C. Bessemer steel
   D. SAE steel

A. Alloy steel

4. The thermal expansion of about
   10 times higher than those of materials and
   heat generated during machining is:
   A. Asbestos
   B. steel/iron
   C. Iron/steel
   D. wood/steel

B. steel/iron

5. To hold to minimum, the axial direction of
   movement, a separate thrust bearing or
   collared bearing capable of considerable load
   is required. The type of bearing to use is a __ bearing.
   A. double row ball
   B. double row angular contact
   C. roller bearing
   D. wide type self-aligning

B. double row angular contact

6. The specific weight of ordinarily is 45 to 55% less in weight and 2.35 to 2.70% less in cost compared with pulley.
   A. Iron/steel
   B. steel/iron
   C. wood/iron
   D. wood/steel

B. steel/iron

7. To avoid scoring in the hearing surface and the
   contamination/absorption of fine dirt in bearing
   operation/lubrication the bearing material to apply
   should have good:
   A. Ductility
   B. resistance conformability
   C. corrosion resistance
   D. toughness

B. resistance conformability

8. When the Izod test measures?
   A. Components
   B. Ductility
   C. Resistance
   D. Toughness

D. Toughness

9. Corresponding pick for alkaline.
   A. Caliper
   B. Micrometer
   C. Red
   D. Green

A. Caliper

10. Bearing material for high temp operation is:
    A. Bevel type
    B. Spur
    C. Plain
    D. Roller

A. Bevel type

11. Application of line of action tangent to circle
    produces:
    A. Spur pinion
    B. Spur gear
    C. Bevel pinion
    D. Helical gear

C. Bevel pinion

12. In helical gear, tooth thickness is measured in:
    A. Normal plane
    B. Transverse plane
    C. Axial plane
    D. Pitch plane

A. Normal plane

13. Specification of molybdenum alloy.
    A. SAE3XXX
    B. SAE4XXX
    C. SAE5XXX
    D. SAE6XXX

B. SAE4XXX

14. A __ chain is an assembly of lines and joints.
    A. Dynamic
    B. Kinetic
    C. Sprocket
    D. Static

C. Sprocket

15. The recommended means of supporting the
    chuck during the mounting procedure to the
    lathe spindle is to use:
    A. Crane
    B. Jack
    C. Overhead
    D. Racket

D. Racket

16. Too much __ in a flat belt operation
    tend to cause excessive wear slippage and may burn.
    A. load
    B. Lack
    C. Usage
    D. Tightness

D. Tightness

17. It is a chromium steel type in AISI-SAE designation.
    A. 10XX
    B. 25XX
    C. 50XX
    D. 40XX

C. 50XX

18. Which of the following is not recommended
    for use in a driving space exceeding 2000 ft/min?
    A. Flat leather belt
    B. Herringbone gear
    C. Silent sprocket
    D. V-Belt

B. Herringbone gear

19. It is low cost bearing used worldwide for automobile
    or low horse power motor applications.
    It is made of thin coating of over flat metal strip.
    A. Babbit
    B. Cadmium brass
    C. Lead
    D. Thin

A. Babbit

20. The most common useful tools to measure
    diameter in machine shop operation but normally
    and always used with steel scale for measurement.
    A. Caliper
    B. Micrometer
    C. Protractor
    D. Vernier

A. Caliper

21. In hot forming introduce to cause the metal in
    a shape mold according to the shape to dies made.
    A. Hardness
    B. Spinning
    C. Swaging
    D. Toughness

C. Swaging

22. Forces of equal in magnitude but opposite in
    direction are parallel called:
    A. Acceleration
    B. Coplanar
    C. Couple
    D. Non-coplanar

C. Couple

23. Composition of force is at the _ of two or more forces.
    A. Combination
    B. Opposition
    C. Resultant
    D. Summary

C. Resultant

24. Circular pitch is measured along the __ in the circular gear.
    A. Circle
    B. Line of action
    C. pitch center
    D. pitch diameter

C. pitch center

25. Stiffness is the material's ability to __ deformation under stress.
    A. Non-polar
    B. planar
    C. resists
    D. Staffer

C. resists

26. The pipe color in steam is:
    A. Blue
    B. Gray
    C. Silver gray
    D. White

C. Silver gray

27. What method is used the yield point of some brittle materials?
    A. Offset ratio
    B. modulus of resilience
    C. modulus measurement
    D. parallelogram method

A. Offset ratio

28. Wood pattern in the foundry is normally constructed out of:
    A. Dried sap wood
    B. hard wood
    C. kiln dried wood
    D. scrap wood

A. Dried sap wood

29. The progressive change in position of is called motion.
    A. Component
    B. couple
    C. link
    D. mass

D. mass

30. Strain or __ is a change in geometry / shape of the body due to action of a force on it.
    A. Bending Stress
    B. Deformation
    C. Shear stress
    D. stress

B. Deformation

31. The effective face width of a helical gear divided by the axial pitch. This sometimes called face overlap.
    A. Angle overlap
    B. Axial overlap
    C. Contact overlap
    D. Helical overlap

D. Helical overlap

32. For mass production of casting it is generally chapter to use: longer life.
    A. Gear axis
    B. normal plane
    C. contact overlap
    D. pitch diameter

C. contact overlap

33. It is a place between mating teeth or the amount of which a tooth space exceed the thickness of an engaging tooth is called:
    A. Backlash
    B. Clearance
    C. Pitting
    D. Space

A. Backlash

34. The forces that be combined or called component forces.
    A. Combination
    B. Opposition
    C. Resultant
    D. Summary

C. Resultant

35. Plane of rotation is defined as plane perpendicular to a:
    A. gear axis
    B. gear ratio
    C. normal plane
    D. pitch diameter

A. gear axis

36. Cutting lubricant used in drilling reaming and tapping for brass and bronze
    A. Dry
    B. Soda water
    C. Soluble oil
    D. Turpentine

A. Dry

37. Non-concurrent forces when in action are:
    A. Collinear
    B. Couple
    C. parallel
    D. scalar

C. parallel

38. The general accepted limit of diamond wheel speed should be in the range of _ fpm.
    A. 1000/2000
    B. 2500/3500
    C. 3000/4000
    D. 5000/6000

D. 5000/6000

39. Prepared tool bit will now consist of face, nose and:
    A. Cutting tool
    B. shank
    C. Sharp tool
    D. tool edge

B. shank

40. This is an alloy in bronze casting that assist lubrication in and is called a lubricant:
    A. Lead
    B. manganese
    C. phosphate
    D. tin

A. Lead

41. For longer sprocket chain life the speed range of _ fpm is recommended.
    A. 92XX
    B. 300XX
    C. 304xx
    D. 515xx

A. 92XX

42. All stainless type is SAE designation except:
    A. 92XX
    B. 300XX
    C. 304XX
    D. 515XX

D. 515XX

43. It is white metal with good oxidation and corrosion resistance. This has also electrical magnetic properties.
    A. Aluminum
    B. Copper
    C. Nickel
    D. Titanium

C. Nickel

44. It is molybdenum steel - tape in AISI SAE designation
    A. 44XX
    B. 45XX
    C. 50XX
    D. 51XX

D. 51XX

45. Cutting lubricant used in drilling reaming and tapping for brass and bronze
    A. Dry
    B. Soda water
    C. Soluble oil
    D. Turpentine

A. Dry

46. In a _ design, the lead of a single thread is equal to the pitch.
    A. bevel gear
    B. bolt
    C. helical gear
    D. hypoid gear

B. bolt

47. A type of chisel used in cutting of keyways, square corners or slots.
    A. Cape
    B. Diamond head
    C. Flat
    D. Round

A. Cape

48. The maximum recommended ideal number of teeth to use for bigger sprocket is:
    A. 120
    B. 127
    C. 132
    D. 143

A. 120

49. The teeth on the outer ring surface is called the external gear:
    A. Develop
    B. Flank
    C. Gear
    D. Involute

C. Gear

50. A bolt general application that posses a stronger thread is a type of screw.
    A. BUN
    B. UNC
    C. UNEF
    D. WOOD

B. UNC

51. Maximum moment formula for beam simply supported at both and subject to a load uniformly disturbed over its length.
    A. wL/2
    B. wL/8
    C. wL/8
    D. wL/12

B. wL/8

52. Special bearing used with high deflection.
    A. Babbitt
    B. ball
    C. Roller
    D. Self aligning

D. Self aligning

53. For low load and less experience production.
    A. Babbitt
    B. ball
    C. Roller
    D. Self aligning

B. ball

54. The lateral strain in axial tension members can be calculated by
    A. Deformation
    B. Hooke’s law
    C. Poisson’s ratio
    D. William’s law

B. Hooke’s law

55. The most abundant being used in automobiles worldwide is coated with on top of the plate.
    A. Babbitt
    B. lead
    C. manganese
    D. tin

B. lead

56. A liquid metal at room temperature.
    A. Aluminum
    B. mercury
    C. Zinc
    D. Zirconium

B. mercury

57. Steel with SAE specification 13XX.
    A. Chromium
    B. Manganese
    C. Molybdenum
    D. Nickel

B. Manganese

58. Property, which enables a material to be drawn into a wire.
    A. Ductility
    B. Elasticity
    C. Plasticity
    D. Utility

A. Ductility

59. Heating a metal to a temperature above the
    critical temperature and from cooling slowly
    usually done in the furnace to reduce the
    hardness and improve the machinability is a
    process called
    A. Annealing
    B. Normalizing
    C. quenching
    D. tempering

B. Normalizing

60. The stress that causes the material to shorten:
    A. Bearing
    B. Compressive
    C. Shear
    D. tensile

B. Compressive

61. The most common lubricants being utilized in
    whatever category of load and speed are oil,
    grease and dry lubricants like
    A. Bronze
    B. Graphite
    C. Lead
    D. Silicon

B. Graphite

62. Commonly used in parallel shaft transmission
    especially when a smooth continuous action is
    essential as in high speed drives up to 12,000
    fpm.
    A. Bevel gear
    B. Helical gear
    C. Herringbone gear
    D. Spur gear

B. Helical gear

63. The reciprocal of a diametral pitch or the ratio
    of the pitch diameter to the number of teeth.
    A. Clearance
    B. Involute
    C. Lead
    D. Module

D. Module

64. What tool will be used in making wood
    pattern in the foundry shop?
    A. Band saw
    B. Drill machine
    C. Hammer
    D. Saw and chisel

D. Saw and chisel

65. Type of bolt commonly used in the
    construction that is threaded in both ends.
    A. Acme threaded bolts
    B. Hex bolt
    C. Hardness
    D. Stud bolt

D. Stud bolt

66. Ability of a material to absorb strain energy
    and will return to its original state.
    A. Creep
    B. Fatigue strength
    C. Hardness
    D. Resilience

D. Resilience

67. The ratio of lateral strain to longitudinal
    strain.
    A. Deformation elasticity
    B. Modulus of elasticity
    C. Poisson’s ratio
    D. William’s line

C. Poisson’s ratio

68. Basic size is the same as design size if there is
    no:
    A. Allowance
    B. Clearance
    C. Limits
    D. Tolerance

A. Allowance

69. Forces that meet at common point is called:
    A. Collinear
    B. Concurrent
    C. coplanar
    D. couple

B. Concurrent

70. A pair of equal and opposite (not collinear)
    forces that tend to cause a rotation of a body.
    A. Centroids
    B. Couple
    C. Equilibrium
    D. Vector

B. Couple

71. Stress that resists being pulled apart.
    A. Compressive
    B. Shear
    C. Tensile
    D. Torsional

C. Tensile

72. Dynamic seal is also known as:
    A. Gasket
    B. Packing
    C. Seal
    D. Shield

B. Packing

73. Acceleration is proportional to the force.
    A. Hooke’s law
    B. Law of gravitation
    C. Law of motion
    D. Newton’s law

D. Newton’s law

74. Which type of hardening will work to some
    extent in all metals?
    A. Annealing
    B. Austenitizing
    C. Martempering
    D. Work hardening

D. Work hardening

75. Sound travel fastest in:
    A. Air at 0°F and 1 atmosphere
    B. Air at 70°F and 1 atmosphere
    C. Air at 70°F and 10 lbf/in²
    D. Steel at 70°F

D. Steel at 70°F

76. The yield strength of common yellow brass
    (70%Cu, 30%Zn) can be increased by:
    A. Annealing
    B. Chill casting
    C. Cold working
    D. Heat treatment

C. Cold working

77. Forces not on the same place is called
    A. Component
    B. Composition of forces
    C. Non-coplanar
    D. Resolution

C. Non-coplanar

78. The distance between the center of oscillation
    and the point of suspension is called:
    A. Fix axis
    B. Center of gravity
    C. Center of percussion
    D. Radius of oscillation

D. Radius of oscillation

79. If the velocity is variable and
    regularly/constantly increasing the rate of
    change is called:
    A. Acceleration
    B. Constant work
    C. Moment
    D. Motion

A. Acceleration

80. The kinematic chain in which one link is
    considered fixed for the purpose of analysis but
    motion is possible in other links.
    A. Belting
    B. Frame
    C. Mechanism
    D. Sprocket chain

B. Frame

81. The ___ is one of the rigid members/bodies
    joined together to form a kinematic chain.
    A. Coplanar
    B. Frame
    C. Link
    D. Machine

C. Link

82. For large speed ratio and large sprocket utilized
    it is recommended cast _ material since
    the large sprocket teeth are having fewer
    arrangements.
    A. Alloyed steel
    B. Heat treated steel
    C. Iron
    D. Malleable iron

C. Iron

83. Roller bearing is utilized on _ carrying
    capacity and is better than ball in this
    condition.
    A. Heavy load
    B. High temperature load
    C. Low load
    D. Reversing load

A. Heavy load

84. To enhance mechanical properties, fabrication
    characteristics or any other attributes of steel,
    some elements are added in melting in specific
    ranges or minimum aside from carbon and
    generally termed:
    A. Alloy steel
    B. AISI steel
    C. Bessemer steel
    D. SAE steel

A. Alloy steel

85. Materials is having thermal expansion of about
    10 times higher than those of materials and
    has more heat generated during machining is:
    A. Aluminum
    B. Asbestos
    C. Plastic
    D. PVC

C. Plastic

86. To hold to minimum, the axial direction of
    deflection/movement, a separate thrust
    bearing or preloaded bearing capable of
    absorbing considerable load is required. The
    type of bearing to use is a _ bearing.
    A. Deep groove ball
    B. Double row angular contact
    C. Tapered roller bearing
    D. Wide type self-aligning

B. Double row angular contact

87. Pulley made of ordinarily is 45 to
    55% less in weight and 2.35 to 2.70% less
    slippage compared with .
    A. Iron/steel
    B. Steel/iron
    C. Wood/iron
    D. Wood/steel

B. Steel/iron

89.
A. Normal plane
B. Pitch plane
C. Plane of rotation
D. Radius of gyration

B. Pitch plane

89. The minimum value of numerical combined shocks and fatigue factor to be applied in every case to the computed bending moment of the shaft is:
    A. $1.5$
    B. $1.75$
    C. $2.0$
    D. $1.3$

A. $1.5$

90. What is the other name given to short shafts on machines?
    A. Spindles
    B. head shafts
    C. core shafts
    D. all of these

A. Spindles

91. The other given to a line shaft is:
    A. Countershafts
    B. Main shafts
    C. long shaft
    D. head shaft

B. Main shafts

92. The speed at which the center of mass will be equal the deflecting forces on the shafts; shaft with its attached bodies will then vibrate violently, since the centrifugal forces changes its direction as the shaft turns in:
    A. Nominal speed
    B. critical speed
    C. relative speed
    D. mean speed

B. critical speed

93. An old rule of thumb for transmission shafting is that the deflection should not exceed $\rule{5cm}{0.15pt}$ of length, between supports.
    A. $0.01$ in. per foot
    B. $0.08$ in. per foot
    C. $0.02$ in. per foot
    D. $0.05$ in. per foot

A. $0.01$ in. per foot

94. For transmission shaft the allowable deflection is $1$ degree in a large of $\rule{5cm}{0.15pt}$ diameters.
    A. $20$
    B. $25$
    C. $30$
    D. $40$

B. $25$

95. What is the limiting torsional deflection for machinery shafts, if the criteria of limiting torsional deflection vary from $0.08\%$ per foot of length?
    A. $1^{\circ}$
    B. $2.5^{\circ}$
    C. $2^{\circ}$
    D. $3.5^{\circ}$

A. $1^{\circ}$

96. Bevel gear with size $5$ in. to $15$ in should not be lift or depress more than $\rule{5cm}{0.15pt}$, as Gleason statement.
    A. $0.004$
    B. $0.003$
    C. $0.002$
    D. $0.001$

B. $0.003$

97. What type of key that allows the hub to move along the shaft but prevents the rotation of the shaft?
    A. Woodruff Key
    B. Feather Key
    C. Gibbs Key
    D. Square Key

B. Feather Key

98. What is the other name for Kennedy Key?
    A. Tangential key
    B. woodruff key
    C. saddle key
    D. roll pin

A. Tangential key

99. What type of fits used for involute spline?
    A. Close fit
    B. Press fit
    C. Sliding fit
    D. all of these

D. all of these

100. It is used for permanent fits and similar to involute splines except that the pressure angle is $14.5^{\circ}$.
     A. Separation load
     B. spline shaft
     C. stub serration
     D. involute serration/

D. involute serration