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IKING 2 > M4 > Flashcards

M4 Flashcards

1
Q

) Which of the following device is used for
transmitting energy in CNC machine tools?
A. Recirculating ball screw and nut assembly
B. Screw and nut assembly
C. Pulley and belt
D. Gears

A

A

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2
Q

Which of the following is the ratio of the
fatigue strength without a stress concentration to the
fatigue stress with a stress concentration?
A. Factor of safety
B. Fatigue stress concentration factor
C. Reliability factor
D. Wahl’s factor

A

B

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3
Q

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

A

B

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4
Q

) 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. Deep groove ball
B. Double row angular contact
C. Tapered roller bearing
D. Wide type self-aligning

A

B

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5
Q

To avoid scoring in the bearing surface
and the shaft due to contamination/absorption of the fine
dirt in the bearing during operation/lubrication, the bearing
material to apply should have good ________ properties.
A. Anti-scoring
B. Corrosion resistance
C. Corrosion resistance conformability
D. Embeddability

A

D

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6
Q

What do impact tests measure?
A. Compactness C. Plasticity
B. Ductility D. Toughness

A

D

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7
Q

The material that can cut or wear the
hardest substance subjected to2
:
A. Abrasive C. Tungsten
B. Carbide D. Vanadium

A

A

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8
Q

When working on bearings and
checking for high spots, it is customary to apply:
A. Dykem blue C. Red lead
B. Prussian blue D. White lead

A

B

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9
Q

Steel balls of ball bearing are
manufactured by:
A. Casting C. Rolling
B. Cold heading D. Turning

A

B

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10
Q

) Ball bearings are provided with a cage:
A. To facilitate the slipping of balls
B. To maintain the balls at a fixed distance apart
C. To prevent the lubricant out
D. To reduce friction

A

B

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11
Q

) An object in equilibrium may not have:
A. Acceleration C. Any torque acting on it
B. Any force acting on it D. Velocity

A

A

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12
Q

Babbitt metal is used primarily in:
A. Ball bearings C. Sleeve bearings
B. Roller bearings D. Thermocouples

A

C

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13
Q

Best coolant and lubricant for cast iron
is/are:
A. Dry C. Soluble oils
B. Mineral or fatty oils D. Water soluble oils

A

A

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14
Q

Various kinematic pairs are given below,
choose the (lower) power pair.
A. Ball bearings C. Crank shaft and bearing
B. Cam and follower D. Tooth gear in mesh

A

A

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15
Q

A less expensive bearing for light loads.
A. Babbittized bearing C. Roller bearing
B. Ball bearing D. Thrust bearing

A

B

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16
Q

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

A

B

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17
Q

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

A

B

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18
Q

For better mounting of bearing, it is
preferred to heat the inner ring in the range of 200°F and
______ but never more than ______ as overheating might
reduce the ring hardness.
A. 250 °F C. 300 °F
B. 280 °F D. 320 °F

A

A

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19
Q

Ball bearing is less expensive than roller
bearing when applied economically or requirement in:
A. High load C. Static installation
B. Low load D. Steady load

A

D

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20
Q

The purpose of these parts in application
are to have better bearings to seal the guard against
marring, etc.
A. Journal bearings C. Shaft seals
B. Metallic seals D. Washers

A

D

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21
Q

Which of the following materials is
unsuitable as a bearing?
A. Cast iron C. Nylon
B. Low carbon steel D. Teflon

A

B

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22
Q

Which of the following is NOT a function of
bearings?
A. To give free rotation to the shaft
B. To guide the shaft
C. To support the shaft
D. To transmit power

A

D

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23
Q

) The property of the bearing material to yield
and adopt its shape to that of journal.
A. Conformability C. Endurance limit stress
B. Embeddability D. Viscosity

A

A

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24
Q

) It is the ability to deform plastically to
compensate for irregularities in bearing assembly.
A. Conformability C. Embeddability
B. Elasticity D. Plasticity

A

A

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25
Q

Bearings are generally made of :
A. Gunmetal C. Mild steel
B. Tin D. Cast iron

A

A

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26
Q

Special bearing used with high deflection.
A. Babbitt C. Ball
B. Roller D. Self-aligning

A

D

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27
Q

What is the operating temperature range of
oil films in the bearing?
A. 130°F to 150°F C. 150°F to 170°F
B. 140°F to 160°F D. 160°F to 180°F

A

B

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28
Q

The following are types of ball bearing
EXCEPT:
A. Deep-groove C. Self-aligning
B. Filling-slot D. Shallow-groove

A

D

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29
Q

Which of the following pairs is formed if shaft
is revolving in a bearing?
A. Cylindrical pair C. Sliding pair
B. Lower pair D. Turning pair

A

B

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30
Q

In general, in order to engage securely and
prevent dragging the clearance between release bearing and
release collar in a clutch is usually:
A. 2 - 3 mm C. 6 - 7 mm
B. 4 - 5 mm D. 8 - 9 mm

A

A

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31
Q

These are surfaces that do not conform to
each other very well as in the rolling-element bearings.
A. Conformal surfaces C. Rolling surfaces
B. Non-conformal surfaces D. Sliding surfaces

A

B

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32
Q

The most widely used ball bearing and is
employed in many modified forms; it is also known as the
“Conrad” type or “Deep-groove” type.
A. Double-row Bearings
B. Single-row Angular-contact
C. Single-row Radial, Filling Slot
D. Single-row Radial, Non-filling Slot

A

D

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33
Q

) The 300 series bearing is called:
A. Heavy series C. Medium series
B. Light series D. None of these

A

C

34
Q

The 200 series bearing is called:
A. Heavy series C. Medium series
B. Light series D. None of these

A

B

35
Q

To avoid scoring in the bearing surface and
the shaft due to contamination/absorption of the fine dirt
in the bearing during operation/lubrication, the bearing
material to apply should have good ______ properties.
A. Anti-scoring C. Conformability
B. Corrosion resistance D. Embeddability

A

D

36
Q

What is this type of ball bearing in which the
balls are assembled by the eccentric displacement of the
inner ring?
A. Deep-groove ball bearing
B. Filling-slot ball bearing
C. Self-aligning ball bearing
D. Shallow groove ball bearing

A

A

37
Q

For thrust bearing, the speed at moderate
operating conditions is:
A. 50 < Vm > 200 fpm C. 50 < Vm > 250 fpm
B. 50 < Vm > 220 fpm D. 50 < Vm > 290 fpm

A

A

38
Q

Steel balls for ball bearings are manufactured
by:
A. Casting C. Rolling
B. Cold heading D. turning

A

B

39
Q

Which of the following is NOT a type of ball
bearing?
A. Deep-groove C. Self-aligning
B. Filling-slot D. Shallow groove

A

D

40
Q

Which of the following are considered
advantageous for bearing materials?
A. Compatibility C. Embeddability
B. Conformability D. All of these

A

D

41
Q

In the last stage of ball bearing production; the ball are:
A. Ground C. Nickel plated
B. Lapped D. Turned

A

B

42
Q

. Ball bearing races are generally made of:
A. Turned C. Nickel plated
B. Ground D. Lapped

A

D

43
Q

It is the best example for driving fit.
A. Tire on the rail wheel C. Pulley on the shaft
B. Ball bearing on the shaft D. Tire on the bicycle rim

A

B

44
Q

The surface that the balls roll on is ground first, and then:
A. Ground C. Nickel plated
B. Lapped D. Turned

A

B

45
Q

Ball bearings are generally made of:
A. Carbon chrome steel C. Grey cast iron
B. Carbon steel D. Stainless steel

A

A

46
Q

The listed life of a ball/roller bearing in a catalog is:
A. The average life
B. The maximum expected life
C. The minimum expected life
D. None of these

A

C

47
Q

A bearing ball material which is very hard, almost nonmagnetic, and extremely corrosive resistant; when spark
tested, it will give off almost no indication at all, outside of a
few red tracers.
A. Hastelloy C. Stainless steel
B. Inconel D. Stellite

A

D

48
Q

. Ball bearings are provided with a cage to:
A. Facilitate slipping of balls
B. Maintain the balls at a fixed distance apart
C. Prevent the lubricant from flowing out
D. Reduce friction

A

B

49
Q

Which bearings are used in Plummer blocks:
A. Deep-groove ball bearing
B. Filling-slot ball bearing
C. Self-aligning ball bearing
D. Shallow groove ball bearing

A

C

50
Q

Steel balls for rolling element bearings are manufactured to
the following standards, EXCEPT:
A. ABMA STD 10A C. ASTM F2215
B. DIN 5401 D. ISO 9001

A

D

51
Q

The type and number of bearings to be used for spindles of
machine tool depend on the:
A. Load on bearing C. Type of spindle
B. Type of machine tool D. None of these

A

A

52
Q

The last two digits of the bearing designation give the bore
diameter of rolling contact bearings when multiplied by:
x
A. 10 C. 5
B. 100 D. π

A

C

53
Q

The rated life of a ball/roller bearing varies:
A. Directly as cube of the load
B. Directly as the load
C. Inversely as cube of the load
D. Inversely as the load

A

C

54
Q

Which of the following is an antifriction bearing?
A. Collar bearing C. Needle bearing
B. Journal bearing D. Pivot bearing

A

C

55
Q

If the manufacturer numbered the bearing is 5204Z, then
what is the bore size of the bearing?
A. 20 mm C. 30 mm
B. 25 mm D. 40 mm

A

A

56
Q

Which of the following bearings does not come under antifriction bearings?
A. Cylindrical roller bearing C. Pedestal bearing
B. Needle bearing D. Thrust ball bearing

A

C

57
Q

Which type of bearing used in crank shaft?xi
A. Ball bearing C. Magnetic bearing
B. Fluid bearing D. Plain bearing

A

D

58
Q

Which of the following bearing is preferred for oscillating
conditions?
A. Angular contact single row ball bearing
B. Double row roller bearing
C. Needle roller bearing
D. Taper roller bearing

A

C

59
Q
  1. In thrust bearings, the load acts _______.xii
    A. Along the axis of rotation
    B. Parallel to the axis of rotation
    C. Perpendicular to the axis of rotation
    D. Both A and B
A

A

60
Q

Which of the following is an antifriction bearing?
A. Collar bearing C. Needle bearing
B. Journal bearing D. Pivot bearing

A

C

61
Q

A very thin flat piece of metal, used to determine the
amount of space or diametral clearance in a spherical
bearing.
A. Caliper gauge C. Shim gauge
B. Feeler gauge D. Sizing gauge

A

B

62
Q

A bearing type that supports the load acting along the axis
of the shaft.3
A. Thrust C. Radial
B. Longitudinal D. Transversal

A

A

63
Q

. It is an important consideration where many high-capacity
bearings are made of composite materials, i.e., where one
or more layers of bearing metal are bonded with steel shell.
A. Bondability C. Embeddability
B. Conformability D. None of these

A

A

64
Q

The tapered roller bearings can take:xiii
A. Radial load only C. Axial load only
B. Thrust load only D. Both A and B

A

D

65
Q

Load acting on bearing in its plane of rotation is:
A. radial load C. axial load
B. thrust load D. none of the listed

A

A

65
Q

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

A

A

66
Q

If a bearing is designated by the number 305, it means that
the bearing is of:
A. Light series whose bore is 25 mm
B. Light series whose bore is 5 mm
C. Medium series whose bore is 25 mm
D. Medium series whose bore is 5 mm

A

A

67
Q

The rolling contact bearings are known as:
A. Antifriction bearings
B. Journal bearings
C. Thick lubricated bearings
D. Thin lubricated bearings

A

A

68
Q

If you consider only the load and speed of your ball/roller
bearing, you can use the basic rating life of a bearing in
accordance with ISO 281, that is:
A. L9 C. L90
B. L10 D. L100

A

B

69
Q

The 400 series ball bearing is called:
A. Heavy series C. Medium series
B. Light series D. None of these

A

A

70
Q

A bearing material which has self-lubricating properties,
resistant to attack of chemicals and cost is very high?
A. Laminated phenolics C. Sintered alloys
B. Nylon D. Teflon

A

d

71
Q

The 100 series ball bearing is called:
A. Heavy series C. Medium series
B. Light series D. Extra-light series

A

D

72
Q

From the given bearing number find the bearing series it is
representing 6304Z.
A. Extra light C. Light
B. Heavy D. Medium

A

D

73
Q

Mounted plain bearings are available in housing types or
mounting types such as:
A. Flange bearings C. Take-up bearings
B. Pillow blocks D. All of the above

A

D

74
Q

Standard ratings such as those provided by ABMA/ANSI give
an accurate comparison on various bearings; these load
ratings are:
A. Basic and complex C. Static & complex
B. Dynamic and complex D. Static and basic

A

D

75
Q

The rolling element type bearing with the highest radial load
and speed capacity relationship.
A. Cylindrical bearing C. Spherical bearing
B. Needle bearing D. Tapered bearing

A

A

76
Q

Which of the following are functions of bearings?
A. Ensure free rotation of shaft with minimum friction
B. Holding shaft in a correct position
C. Transmit the force of the shaft to the frame
D. All of the listed

A

D

77
Q

The ball bearings are provided with a cage to:
A. Facilitate slipping of balls
B. Maintain the balls at a fixed distance apart
C. Prevent the lubricant from flowing out
D. Reduce friction

A

B

78
Q

The product of a bearing bore diameter and the shaft speed
of a ball bearing is specified as DN or:
A. Force value C. Torque value
B. Speed value D. Work value

A

B

79
Q

If the load on ball bearings is reduced to ½, then its life would
increase by:
A. 2 times C. 6 times
B. 4 times D. 8 times

A

D

IKING 2 (10 decks)

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