MD ELEMENTS 19

Which of the following ropes is used for lines, hawsers, overhead cranes, and hoist? A. 6 x 37 IWRC B. 6 x 35 IWRC C. 6 x 25 IWRC D. 7 x 26 IWRC

A. 6 x 37 IWRC

2. The regular materials for wire ropes are made of? A. chromium B. wrought iron C. cast steel D. high-carbon iron

D. high-carbon iron

3. What is the minimum suggested design factor of wire ropes for miscellaneous hoisting equipment is? A. 2 B. 3 C. 5 D. 4

C. 5

4. To avoid excessive wear rate the recommended limiting pressure for 6 x 19 ropes is __________for cast steel. A. 700 psi B. 900 psi C. 1000 psi D. 1200 psi

B. 900 psi

5. To avoid excessive wear rate the recommended limiting pressure for 6 x 19 ropes is __________for manganese cast steel. A. 2500 psi B. 2000 psi C. 3000 psi D. 2300 psi

A. 2500 psi

6. What friction device that are used to connect shafts? A. clutches B. spring C. brakes D. holders

A. clutches

7. The total frictional energy that is stored in the brake parts principally in the drum or disk is approximately? A. 56% up B. 90% up C. 86% up D. 75% up

D. 75% up

8. The brake capacity to absorb energy is known as? A. energy B. power C. resistance brake D. centrifugal brake

C. resistance brake

9. a kind of braking system such that if the band wraps partly around the brake drum and the braking action is obtained by pulling the band tight into the wheel. A. block brake B. clutch C. band brake D. centrifugal brake

C. band brake

10. Which of the following clutches that has a disadvantage of heavier rotating masses? A. multiple disc clutch B. cone clutch C. disc clutch D. tin clutching

A. multiple disc clutch

11. Which of the following welds have been considered as resistance weld which is usually round in the same dorm as the electrodes that press the sheet together? A. edge joints B. spot welds C. MIG welds D. TIG welds

B. spot welds

12. A welding which consist of short lengths (2-3 long) of welds with space between as 6 inches on centers. A. intermittent weld B. spot weld C. MIG weld D. TIG weld

A. intermittent weld

13. A welding operation that use hot flame and metal rod. A. gas welding B. arc welding C. resistance welding D. automatic welding

A. gas welding

14. The arc is covered with a welding composition and bare electrode wire is fed automatically. A. resistance welding B. induction welding C. submerged welding D. spot welding

C. submerged welding

15. What is the recommended coefficient of fluctuation pf flywheels for punching, shearing, pressing machine is? A. 0.005-0.1 B. 0.002 C. 0.03-0.05 D. 0.01-0.03

A. 0.005-0.1

16. The part of machine that absorbs the energy delivered by a sharp force or blow. A. spring B. anvil C. brakes D. flywheel

B. anvil

17. It is the friction of wheel inclination from the vertical position. A. camber B. toe-in C. caster D. king pin inclination

A. camber

18. Which of the following is a machine which takes large quantities of raw or finished materials and binds them with a rope or metal straps or wires into a large package? A. bacher B. bending machine C. baler D. automatic screw machine

C. baler

19. It is the grasping of an outside work piece in a chunk or a jawed device in a lathe. A. clucking B. clamping C. chucking D. clam shelling

C. chucking

20. Which of the following is a mechanical linkage or mechanism that can turn about a center or rotation? A. oscillation B. crank C. coupler D. drag link

B. crank

21. What type of compound screw which produces a motion equal to the difference in motion between the two component screws? A. machine screw B. tanden screw C. differential screw D. variable screw

C. differential screw

22. Which of the following bolts provided with a hole at one end instead of usual head? A. stud bolt B. eye bolt C. machine bolt D. stone bolt

B. eye bolt

23. What operation generally carried out to divide the parent coiled sheet into narrow coils? A. slotting B. squeezing C. squaring D. slitting

D. slitting

24. It is the process used to form shallow, round, raised recessed troughs of uniform width in a straight curved or circular form. A. hemming B. beading C. embossing D. buldging

B. beading

25. The process of removing excess metal from the edge of a strip to make it suitable for drawing without wrinkling or to obtain final complicated shape which was not directly possible by blanking. A. lancing B. slugging C. notching D. trimming

C. notching

26. Which of the following is the process of removing course scratches or toll marks? A. polishing B. buffing C. honing D. lapping

A. polishing

27. Which of the following ropes is galvanized and consists of 6 strands, 7 wires each and a hemp core? A. reverse lay rope B. guy rope C. lang lay rope D. regular rope

B. guy rope

28. It is a large lathe used for turning and boring cannons. A. gun lathe B. engine lathe C. cannon lathe D. turret lathe

A. gun lathe

29. What device on the lathe machine used for carrying the revolving spindle? A. head stock B. header C. head suction D. none of these

A. head stock

30. If the faced-centered cubic lattice is compared with the hexagonal closed-packed lattice, which of the following features describes the hexagonal closed-packed structure only? A. it has the closest packed lattice structure B. its coordination number is 2 C. its deformation properties are more directional D. its stacking order is reversed

C. its deformation properties are more directional

31. In molecules of the same composition, what are variations of atomic arrangements known as? A. polymers B. monomers C. isomers D. crystal system

C. isomers

32. Which of the following statements is not true regarding X-ray diffraction? A. the geometrical structure factor F(h, k, l) is the ratio of the amplitude of the X-ray B. reflected from a plane in a crystal to the amplitude of the X-ray scattered from a single electron C. X-ray diffraction is only useful for studying simpler crystal such as the body centered cubic structure rather than more complex crystals like the hexagonal closed packed structure D. X-ray diffraction can be used to determine the gain size of a specimen

C. X-ray diffraction is only useful for studying simpler crystal such as the body centered cubic structure rather than more complex crystals like the hexagonal closed packed structure

33. Which of the following describes diffusion in a crystal structure? A. it is not possible B. it occurs only in alloys, never in pure crystals C. it often uses an exchange or vacancy mechanism D. it occurs primarily as a result of mechanical work

C. it often uses an exchange or vacancy mechanism

34. Which of the following does not produce vacancies interstitial defects, or impurity defects in a material? A. plastic deformation B. quenching C. slow equilibrium cooling D. irradiation with high energy particles

B. quenching

35. Which of the following are true statements about the modulus of elasticity, E? A. it is the same as the rupture modulus B. it is the slope of the stress-strain diagram in the linearly elastic region C. it is the ratio of stress to volumetric strain D. its value depends only on the temperature of the material

B. it is the slope of the stress-strain diagram in the linearly elastic region

36. In general, what are the effects of cold-working a metal? A. increase strength and ductility B. decrease strength and ductility C. increased strength, decreased D. decreased strength, increased ductility

B. decrease strength and ductility

37. Which of the following does cold-working cause? A. elongation of grains in the flow direction, an increase in dislocation density, and over all increase in energy of the metal B. elongation of grains in the flow direction, a decrease in dislocation density, over all decrease in energy of the metal C. elongation of grains in the flow direction, a decrease in dislocation density, and over all increase in energy of the metal D. shortening of grains in the flow direction, a decrease in dislocation density, over all decrease in energy of the metal

A. elongation of grains in the flow direction, an increase in dislocation density, and over all increase in energy of the metal

38. Which of the following statement is false? A. the amount or percentage of cold work cannot be obtained from information about change in the area of thickness of a metal B. the process of applying force to metal at temperature below the temperature of crystallization in order to plastically deform the metal is called cold-working C. annealing eliminates most of the defects caused by the cold working of a metal D. annealing reduces the hardness of a metal

A. the amount or percentage of cold work cannot be obtained from information about change in the area of thickness of a metal

39. Which of the following statement is false? A. there is considerable increase in the hardness and the strength of a cold-worked metal B. cold-working a metal significantly reduces its ductility C. cold-working causes a slight decrease in the density and electrical conductivity of a metal D. cold work decreases the yield point as well as the strength and hardness of the metal

D. cold work decreases the yield point as well as the strength and hardness of the metal

40. Which of the following correctly describes atoms located at grain boundaries? A. they are subjected to the same type of inter atomic forces that are presented in the interior atoms of the crystals B. they are located primarily in highly strained and distorted positions C. they have a higher free energy than atoms in the undisturbed part of the crystal lattice D. all of the above

D. all of the above

41. For a completely corrosion-resistant stainless steel, what minimum percentage of chromium in the alloy is required? A. 1.1% B. 8.3% C. 3.2% D. 11%

D. 11%

42. Modulus of resilience is? A. the same as the modulus of elasticity B. a measure of a materials ability to store strain energy C. the reciprocal of the modulus of elasticity D. a measure of the deflection of a member

B. a measure of a materials ability to store strain energy

43. When a metal is cold worked all of the following generally occur EXCEPT: A. Recrystallization temperature decrease. B. Ductility decreases C. Grains become equi-axed D. Tensile strength increases

C. Grains become equi-axed

44. Which of the following affects most of the electrical and thermal properties of materials? A. the atomic weight expressed in grams per gram atom B. the electrons, particularly the outermost ones C. the magnitude of electrical charge of the protons D. the weight of the atoms

B. the electrons, particularly the outermost ones

45. Which of the following is not a method of non-destructive testing of steel casting and forgings? A. radiography B. ultrasonic C. magnetic particle D. chemical analysis

D. chemical analysis

46. Compressive strength of fully cured concrete is most directly related to: A. sand-gravel B. aggregate gradation C. water-cement ratio D. absolute volume of cement

C. water-cement ratio

47. According to the ACI code, the modular ratio, n, of structural concrete with a 28-day ultimate compressive strength, for, of 3000 is nearest to: A. 7 B. 9 C. 8 D. 10

B. 9

48. What are valence electrons? A. the outer shell electrons B. electrons with positive charge C. the electrons of the complete quantum shells D. the K-quantum shell electrons

A. the outer shell electrons

49. Which of this not a viscoelastic material? A. Plastic B. rubber C. metal D. glass

C. metal

50. Which of the following statements is false? A. Both copper and aluminum have a face-centered crystal structure. B. Both magnesium and zinc have a hexagonal close-packed crystal structure. C. Iron can have either a face-centered or a body centered cubic crystal structure. D. Both lead and cadmium have a hexagonal close-packed crystal structure.

D. Both lead and cadmium have a hexagonal close-packed crystal structure.

51. Past ME Board Question - Cutting lubricant used in drilling reaming, and tapping for brass and bronze. A. Dry B. Soda water C. Soluble oil D. Turpentine

A. Dry

52. Past ME Board Question - Type of bolt commonly used in the construction that is threaded in both ends. A. Acme threaded bolts B. Hex bolt C. Square threaded D. Stud bolt

D. Stud bolt

53. Past ME Board Question - Forces that meet a common point are called: A. Co-linear B. Concurrent C. Coplanar D. Couple

B. Concurrent

54. Past ME Board Question - Dynamic seals are also known as A. Gasket B. Packing C. Seal D. Shield

B. Packing

55. Past ME Board Question - The material for engine radiation is usually made of: A. Admiralty brass B. Navy brass C. Silicon brass D. Yellow brass

D. Yellow brass

56. Past ME Board Question - Mirror finish has surfaces fitness of __________ rms. A. 1 B. 1 to 3 C. 2 to 5 D. 2 to 8

A. 1

57. Past ME Board Question - Non- metallic material of high melting temperature being used as furnace lining is called: A. Dolomite clay bricks B. Quartz bricks C. Refractories D. Silica sand

B. Quartz bricks

58. Past ME Board Question - In greater quantity, this element is harmful to the molten ferrous metal. A. Aluminum B. oxides C. silicon D. sulfur

D. sulfur

59. Past ME Board Question - What is the SAE specification number of molybdenum? A. SAE 2XXX B. SAE 3XXX C. SAE 4XXX D. SAE 5XXX

C. SAE 4XXX

60. Past ME Board Question - Which of the following is not a structural class of steel? A. high carbon B. high speed steel C. low carbon D. tool and die

D. tool and die

61. Past ME Board Question - A furnace used in melting non-ferrous metals called. A. crucible furnace B. cupola furnace C. induction furnace D. tempering furnace

A. crucible furnace

62. Past ME Board Question Which of the following elements when large quantity is harmful to the ferrous metal? A. aluminum B. silicon C. sulphur D. zinc

C. sulphur

63. Past ME Board Question SAE metal that responds to heat treatment: A. SAE 1117 B. SAE 1060 C. SAE 1030 D. SAE 1020

A. SAE 1117

64. Past ME Board Question An iron in which most of the carbon is chemically combined with the iron called: A. cast iron B. gray iron C. malleable iron D. white iron

D. white iron

65. Past ME Board Question Material, usually ceramics employed where resistance to very high temperature is required as for furnace linings and metal melting pots called: A. bricks B. clay C. insulator D. refractories

D. refractories

66. Past ME Board Question Polyesters belong to the group of: A. phenolics B. Teflon C. thermoplastic plastics D. thermosetting plastics

D. thermosetting plastics

67. Past ME Board Question The process commonly used over thermo plastic material is: A. cold forming B. dies casting C. injection molding D. shell molding

C. injection molding

68. Past ME Board Question The hardness of steel increase if it contains: A. austenite B. copper C. pearlite D. martensite

D. martensite

69. Past ME Board Question Which one is different from the remaining? A. cyaniding B. electroplating C. flame hardening D. nitriding

B. electroplating

70. Past ME Board Question An engineer's hammer is made of: A. cast iron B. B forged steel C. high speed steel D. mild steel

B. B forged steel

71. Past ME Board Question Ductile fracture is characterized by: A. appreciable plastic deformation prior to propagation of crack B. fragmentation into more than two pieces C. negligible deformation D. rapid rate for crack propagation

A. appreciable plastic deformation prior to propagation of crack

72. Past ME Board Question A scriber is made of: A. carbon steel B. cold rolled steel C. hot rolled steel D. tool steel

D. tool steel

73. Past ME Board Question Knurling is done to: A. polish material B. roughen material C. sharpen the material D. smooth material

B. roughen material

74. Past ME Board Question Non-metallic materials of high melting temperature used in the construction of furnaces, crucibles and so forth are called: A. ceramics B. grate C. insulators D. refractories

D. refractories

75. Past ME Board Question It is a process by which a hot plastic metal is made to flow into dies by the application of sudden blows to the material. A. drop forging B. extrusion C. machine forging D. press forging

A. drop forging

76. Past ME Board Question It is one in which specimen, supported at both ends as a simple beam, and is broken by the impact strength of the metal. A. charpy test B. izod test C. Rockwell test D. universal test

A. charpy test

77. Past ME Board Question An operation to make smaller hole in exact center for lathe center A. broaching B. central drilling C. counter boring D. reaming

B. central drilling

78. Past ME Board Question It is a process of cleaning the face of grinding wheel by means of a dresser for removing the glazing and loading of wheel and to improve the cutting action of a wheel. A. dressing B. lapping C. polishing D. truing

A. dressing

79. Past ME Board Question A __________ consist of a slide and a swivel vise mounted on the compound rest in place of the toll post. A. grinding attachment B. milling attachment C. reaming attachment D. relieving attachment

B. milling attachment

80. Past ME Board Question The distance between the crest and the base of the thread measured perpendicular to the axis. A. axis of thread B. depth of engagement C. depth of thread D. length of engagement

C. depth of thread

81. Past ME Board Question Name of mechanism, which a welding operator holds during gas welding and at the end of which the gases are burned to perform the various gas welding operation. A. hose B. gage
    C. switch D. torch

D. torch

82. Past ME Board Question A hand tool used to measure engine crank web deflection. A. compound gage B. dial gage C. distortion gage D. feeler gage

C. distortion gage

83. Past ME Board Question It is used for cutting long pieces of metals. A. broaching machine B. planer C. power saw D. shaper

C. power saw

84. Past ME Board Question It is used to true and align machine tools, fixtures and works. A. dial gage B. dial indicator C. feeler gage D. radial indicator

B. dial indicator

85. Past ME Board Question In cranes and other hoisting equipment operating rules, how many whistle signals are required to lower the boom? A. Five short blasts B. Two short blasts C. Three short blasts D. Four short blasts

A. Five short blasts

86. Past ME Board Question Which of the following material has 66% nickel, 29% copper and 3% aluminum? A. K Monel B. Monel C. inconel D. inconel

A. K Monel

87. Past ME Board Question Trimming is a process associated with? A. electroplating B. forging C. machining of metals D. press work

B. forging

88. Past ME Board Question Foundry crucible is made of? A. German silver B. graphite C. lead D. mild steel

B. graphite

89. Past ME Board Question A twist drill is specified by A. its diameter and lip angle B. it shank and diameter C. shank, material and diameter D. shank, material and flute size

C. shank, material and diameter

90. Past ME Board Question Select the one that is gear finishing process. A. gear hobbling B. gear milling C. gear shaping D. gear shaving

D. gear shaving

91. Past ME Board Question Broaching operation is generally used in automobile industry as: A. it is a mass production machine B. it is an automatic machine C. operation is completed in one stroke D. semi-skilled operators can be employed

D. semi-skilled operators can be employed

92. Which statement about area moment of inertia is false? A. I = ∫ d² ( dA ) B. the area moment of inertia arises whenever the magnitude of the surface forces varies linearly with distance C. the moment of inertia of a large area is equal to the summation of the inertia of the smaller areas within the large area. D. the area closest to the axis of interest is the most significant

D. the area closest to the axis of interest is the most significant

93. Which of the following affects most of the electrical and thermal properties of materials? A. The atomic weight expressed in grams per gram atom. B. the electrons, particularly the outermost ones C. The magnitude of electrical charge of the protons D. the weight of the atoms

B. the electrons, particularly the outermost ones

94. Which of the following is not a method of non destructive testing of steel castings and forgings? A. radiography B. ultrasonic C. magnetic particle D. chemical analysis

D. chemical analysis

95. compressive strength of fully cured concrete is most directly related to: A. sand-gravel B. aggregate gradation C. water-cement ratio D. absolute volume of cement

B. aggregate gradation

96. According to the ACI code, the modular ratio, n, of structural concrete with a 28- day ultimate compressive strength, fc, of 3000 is nearest to: A. 7 B. 6 C. 9 D. 10

C. 9

97. What are valence electrons? A. the outer shell electrons B. electrons with positive charge C. the electrons of the complete quantum shells D. the K-quantum shell electrons

A. the outer shell electrons

98. What is the strong bond between hydrogen atoms known as? A. the ionic bond B. the metallic bond C. ionic and metallic bond D. the covalent bond

D. the covalent bond

99. all of the following statements about air entrained concrete are correct, EXCEPT: A. air entrained is recommended when concrete is severe frost action B. with air entrainment, the quantity of water to produce a given consistency (slump) is reduced C. with air entrainment, the quantity of water to produce a specified 28 day compressive strength is reduced D. air entrainment reduces resistance to the freeze-thaw that occurs when salt is used to melt ice or snow

D. air entrainment reduces resistance to the freeze-thaw that occurs when salt is used to melt ice or snow

100. In the design of a reinforced concrete structure, tensile strength of the concrete is normally: A. assumed to be 1/10 of the 28- day compressive strength B. determined by beam test C. neglected D. assumed to be 200 psi/

C. neglected