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IKING > M7 1-3 > Flashcards

M7 1-3 Flashcards

1
Q

Which type of key is used for mounting
shifting gears in gear boxes?
A. Splines B. Saddle
B. Square D. Flat spline

A

A

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2
Q

) A type of key which is chamfered at the
bottom.
A. Roll pin C. Woodruff
B. Barth key D. Gib-head taper key

A

B

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3
Q

In the assembly of pulley, key, and shaft:
A. Key is made the strongest
B. Key is made the weakest
C. Pulley is made the weakest
D. The three are made for equal length

A

B

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4
Q

Drift is used by lathe operator to remove
the taper shank from the taper hole. It is also called ______.
A. Tong C. Chuck taper
B. Morse taper D. Taper key

A

D

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5
Q

Axially located rectangular groove in a
hub and shaft.
A. Keyseat C. Flute
B. Cotter pin set D. setscrew point

A

A

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6
Q

) A key that allows the hub to move along the
shaft but prevents the rotation of the shaft.
A. Feather key C. Square key
B. Gibs key D. Woodruff key

A

A

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7
Q

(ME BD EXAM) Which of the following will best describe sunk
key?
A. keyway is helical along shaft
B. keyway is cut in shaft only
C. keyway is cut in hub only
D. key is cut in both shaft and hub

A

D

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8
Q

Couplings transmitting high torque or operating at
high speeds or both may use _____ keys.
A. 1 C. 3
B. 2 D. 4

A

B

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9
Q

As much as the needed key length, the typical hub lengths
fall between ______ where D is the shaft diameter.
A. l.0D and 1.5D C. 1.25D and 2.4D
B. l.0D and 2.0D D. 1.25D and 2.8D

A

C

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10
Q

It is suggested that the design factor on the yield strength of
keys be about ______ for a smooth load.
A. 1.25 C. 1.75
B. 1.5 D. 2.0

A

B

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11
Q

. It is suggested that the design factor on the yield strength of
keys be about ______ for minor shock loading.
A. 1.25 to 2.0 C. 2.75 to 4.0
B. 2.0 to 2.5 D. 3.0 to 5.0

A

B

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12
Q

A fastener used to enable the transmission of torque from
the shaft to the shaft-supported element.
A. Keys C. Retainer rings
B. Pins D. None of these

A

A

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13
Q

. It is suggested that the design factor on the yield strength of
keys be up to ______ for severe shock loading.
A. 3.25 C. 5.75
B. 4.5 D. 7.0

A

B

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14
Q

If the key length is greater than about 2D, consider using two
keys, 180° apart, or _________.
A. Woodruff key C. Kennedy key
B. Tangent key D. Saddle key

A

c

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15
Q

The usual material of keys is __________, low-carbon steel
(0.2% C or less), although heat-treated alloy steels are used
where needed.
A. Cold-finished C. Hot rolled
B. Hard drawn D. Quenched tempered

A

a

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16
Q

Which of the following is a material used for keys?
A. AISI C1030 C. AISI C1060
B. AISI C1045 D. AISI C1085

A

A

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17
Q

Unless otherwise specified, taper pins are made from:
A. SAE 1020 C. SAE 1211
B. SAE 1113 D. SAE 1340

A

C

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18
Q

Taper in key is provided on which side?
A. Bottom C. Тор
B. Side D. Top and bottom

A

C

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18
Q

How do you call the key which permits axial relative motion
between the shaft and hub?
A. Feather key C. Tangent key
B. Gib head key D. Wood ruff key

A

A

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19
Q

The lengths of Pratt and Whitney keys may vary, but should
always be at least ______ the width.
A. Quadruple C. Triple
B. Quintuple D. Twice

A

D

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20
Q

Square keys are preferred through diameter shafts and
rectangular keys for larger shafts.
A. 4.5 in C. 6.5 in
B. 5.5 in D. 8.5 in

A

C

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21
Q

Couplings transmitting high torque or operating at
high speeds or both may use _____ keys.
A. 1 C. 3
B. 2 D. 4

A

B

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22
Q

A maximum tolerance of _____, is provided for offset
(due to parallel displacement of keyseat centerline from
centerline of shaft or bore) of keyseats in shaft and bore.
A. 0.01 in C. 0.05 in
B. 0.025 in D. 0.075 in

A

A

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23
Q

An instrument used to remove the key from a shaft.
A. Hammer C. Key puller
B. Punch D. None of the above

A

C

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24
Q

Keys manufactured using British Standards should be
manufactured from steel complying with BS 970 with a
tensile strength of not less than:
A. 500 MPa C. 600 MPa
B. 550 MPa D. 650 MPa

A

B

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25
Q

Which of the following keys is used for connecting the pulley
with shaft?
A. Woodruff key C. Gib head key
B. Flat saddle key D. Taper Key

A

C

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26
Q

. It is a type of key that fits into a semicircular keyway cut in
the shaft.
A. Gib-head key C. Tangent key
B. Saddle key D. Woodruff key

A

D

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27
Q

It is known that a woodruff key allows this kind of movement
with the shaft and the hub.
A. Axial C. Radial
B. Eccentric D. None of the listed

A

C

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28
Q

A shaft key made in the form of a segment of a disk and used
with shafts not more than 2.5 inches in diameter.
A. Gib-head key C. Tangent key
B. Saddle key D. Woodruff key

A

D

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29
Q

A type of key in the form of semi-circular disk of uniform
thickness.
A. Sunk key C. Feather key
B. Woodruff key D. Kennedy key

A

B

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30
Q

The typical hub lengths fall between these range, where D is
the shaft diameter.
A. 1.25D and 2.4D C. 1.6D and 2.8D
B. 1.45D and 2.6D D. 1.7D and 3.2D

A

A

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31
Q

Hollow saddle key is used only on this type of transmission.
A. High C. Medium
B. Light duty D. Very high

A

B

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32
Q

. Feather key is assembled with this type of clutch.
A. Single plate clutch C. Multi-plate cultch
B. Cone clutch D. Centrifugal clutch

A

A

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33
Q

These types of keys are circular in section and fit into the
holes.
A. Sunk keys C. Tangent keys
B. Saddle keys D. Pin/Round keys

A

D

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34
Q

. These types of keys are rarely used because these cannot
transmit the high torque.
A. Sunk keys C. Tangent keys
B. Saddle keys D. Pin/Round keys

A

B

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35
Q

A type of key that transmits power through frictional
resistance only.
A. Woodruff C. Kennedy
B. Sunk D. Saddle

A

D

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36
Q

A type of key used for connecting the pulley with shaft.
A. Woodruff key C. Gib head key
B. Saddle key D. Rectangular Key

A

C

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37
Q

Sunk key fits in the keyway of this only.
A. Sleeve C. Hub
B. Pin D. Rim

A

C

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38
Q

A sunk key without taper that is permanently fixed in one of
the connected pieces and that is a sliding fit in a keyway in
the other so as to permit relative longitudinal motion.
A. Feather key C. Sunk key
B. Kennedy key D. Woodruff key

A

A

39
Q

Which of the following is the standard length/s of
commercial shafts?
A. 5 m C. 6 m
B. 7 m D. All of these

A

D

40
Q

Which of the following is the standard length/s of
commercial shafts?
C. 16 ft C. 24 ft
D. 20 ft D. All of these

A

D

41
Q

The thickness of parallel keys as a function of shaft diameter
is equal to:
A. D/2 C. D/3
B. D/4 D. D/6

A

D

42
Q

Taper given on keys is generally on what side of the shaft?
A. On top side only C. On bottom side only
B. On both side D. On any side

A

A

43
Q

A fastener used for axial positioning and for the transfer of
torque or thrust or both.
A. Keys C. Retainer rings
B. Pins D. None of these

A

B

44
Q

A fastener that holds components or assemblies onto a shaft
or in a housing/bore when installed - typically in a groove -
for one time use only.
A. Keys C. Retainer rings
B. Pins D. None of these

A

C

45
Q

A material may be considered to be brittle if its elongation
in a 2-inch gage length is less than ____ per cent.
A. 2 C. 4
B. 3 D. 5

A

D

46
Q

. A type of sunk key used when the shaft diameter is less than
6.5 inches.
A. Square key C. Kennedy key
B. Rectangular key C. Gib-head key

A

A

47
Q

Maximum keys are made up of:
A. Cast iron C. Mild steel
B. High speed steel D. Pig iron

A

C

48
Q

These types of keys fit into keyways in both the shaft and the
secured member in the machinery.
A. Sunk keys C. Tangent keys
B. Saddle keys D. Pin/Round keys

A

A

49
Q

These types of keys are used in high-torque heavy-duty
applications.
A. Sunk keys C. Tangent keys
B. Saddle keys D. Pin/Round keys

A

C

50
Q

Standard inch-sized taper pins have a taper on diameter with
a given ratio of:
A. 1:36 C. 1:48
B. 1:42 D. 1:54

A

C

51
Q

Standard metric-sized taper pins have a taper on diameter
with a given ratio of:
A. 1:40 C. 1:50
B. 1:45 D. 1:55

A

C

52
Q

Sunk key is a _______ drive
.
A. Negative C. Positive
B. Neutral D. None of these

A

C

53
Q

The taper on a rectangular sunk key is of this ratio.
A. 1:48 C. 1:72
B. 1:50 D. 1:100

A

D

54
Q

The effect of keyway on the shaft.
A. Reduces strength of shaft C. Increases stress raiser
B. Reduces rigidity of shaft D. All of these

A

D

55
Q

It is used for permanent fits and are similar
to involute splines except the pressure angle is 14.5°.
A. Involute serrations C. Spline shaft
B. Separation load D. Stub serrations

A

A

56
Q

Involute serrations, which are used for permanent fits, are
similar to involute splines except that the pressure angle of:
A. 25° C. 45°
B. 35° D. 55°

A

C

57
Q

The design of torque capacity of SAE splines with axial sliding
is based on a side pressure of ________.
A. 1,000 psi C. 2,545 psi
B. 2,000 psi D. 3,663 psi

A

A

58
Q

The strength of a splined shaft is approximately equal to the
strength of a shaft of diameter (D – 2h) in torsion and of
diameter ______ in bending.
A. D – h/4 C. D – h/2
B. D – h/3 D. D – h

A

D

59
Q

A spline shaft is recommended when the power transmitted
is too high for ____ keys to absorb.
A. 3 C. 5
B. 4 D. More than 5

A

A

60
Q

Involute splines have stub teeth with a pressure angle of ___
degrees.
A. 14.5° C. 25°
B. 20° D. 30°

A

D

61
Q

It is the most common application of straight-sided splined
shafts.
A. Machine tools C. Bicycles
B. Aircraft D. Automobiles

A

D

62
Q

Involute splines are in the form of concentric external and
internal gear teeth with a pressure angle equals to this with
no undercut with 6 teeth.
A. 30° C. 60°
B. 45° D. 75°

A

A

63
Q

Splined shaft means a shaft with:
A. Feather key C. Woodruff key
B. Key integral with the shaft D. None of the above

A

B

64
Q

The American National Standard covers involute splines
having tooth numbers ranging from _____ with a 30- or
37.5-degree pressure angle.
A. 4 to 40 C. 6 to 60
B. 5 to 50 D. 7 to 70

A

C

65
Q

The American National Standard Institute covers involute
splines having tooth numbers ranging from ________ with a
45-degree pressure angle.
A. 4 to 60 C. 6 to 100
B. 6 to 80 D. 8 to 120

A

C

66
Q

. How many pitches in involute splines?
A. 11 C. 15
B. 13 D. 17

A

D

67
Q

. Which process is used for grinding splined shafts?
A. External cylindrical grinding
B. Form grinding
C. Internal cylindrical grinding
D. Surface grinding

A

B

68
Q

Splined shafts are used when the torque transmitted is in
________.
A. small amount C. both A and B
B. large amount D. Neither A or B

A

B

69
Q

The strength of a splined shaft is approximately equal to the
strength of a shaft of diameter ______ in torsion.
A. D – 2h C. D – 1.25h
B. D – 1.5h D. D – h

A

A

70
Q

A coupling that allows axial
flexibility/movement in the operation; it is made of alternate
bolting of steel, leather, fabric and/or plastic material into
the two flanges.
A. Flexible Disk C. Flexible Toroidal Spring
B. Flexing Oldham D. Elastic-Material Bonded

A

A

71
Q

For a single universal joint, haft angle
should be ______ degrees maximum and much less if on
high rotational speed.
A. 12 C. 15
B. 14 D. 16

A

C

72
Q

Which of the following safety
precautions should be followed when renewing a flange
gasket?
A. Drain the line thoroughly
B. Isolate the section to be worked on
C. Tie down isolation valves
D. All of the above

A

D

73
Q

Before installing a new flange-gasket be
sure that the:
A. Flange faces are absolutely clean
B. Flange faces are painted
C. Isolating valves are open
D. Old gasket is in place

A

A

74
Q

A type of coupling that allows slight
amount of torsional/angular flexibility due to introduction
with some elastic material cylindrically wrapped around the
bolts in the flange.
A. Elastic material bonded coupling
B. Elastic material bushed coupling
C. Simple elastic bonded coupling
D. All of these

A

B

75
Q

A flange coupling is:
A. A rigid coupling
B. Flexible
C. Used for collinear shaft
D. Used for non-collinear shafts

A

C

76
Q

Gasket material which should avoid hot
liquid/steam application.
A. Asbestos fiber C. Rubberized
B. Wool D. Nylon fiber

A

C

77
Q

A type of coupling used to connect two shafts
whose axes intersect at a small angle.
A. Rigid coupling C. Splined coupling
B. Sleeve coupling D. Universal coupling

A

D

78
Q

In the design of flange bolt coupling, the
weakest element should be the ______.
A. Bolt C. Key
B. Flange D. Shaft

A

C

79
Q

For a single Hooke’s coupling, the shaft angle
should not be greater than about________
A. 10⁰ C. 15⁰
B. 12⁰ D. 30⁰

A

C

80
Q

A universal coupling is:
A. Rigid coupling
B. Type of flange coupling
C. Used for collinear shaft
D. Used for non-collinear shaft

A

D

81
Q

In any flange bolt coupling arrangement, the flange bolts are
designed for:
A. Compressive load C. Shear load
B. Fatigue load D. Tensile load

A

C

82
Q

Couplings transmitting high torque or operating at
high speeds or both may use _____ keys.
A. 1 C. 3
B. 2 D. 4

A

B

83
Q

In automobiles the power is transmitted from gear box to
differential through:
A. Flexible coupling C. Knuckle joint
B. Hooke’s joint D. Oldham’s coupling

A

B

84
Q

What is the combustion pressure experienced by the gasket
between the cylinder head and engine block in a petrol
engine?
A. 600 kPa C. 800 kPa
B. 700 kPa D. 900 kPa

A

B

85
Q

Which of the following is not the material of gasket?
A. ASBESTOS
B. CORK
C. PVC
D. RUBBER

A

C

86
Q

For retaining compression in the cylinder, a flat piece of
__________ is placed between the cylinder head and
cylinder block.
A. Cylinder liner C. Invar strut
B. Gasket D. Rims

A

B

87
Q

Sleeve or muff coupling is designed as a:
A. Hollow shaft C. Thick cylinder
B. Solid shaft D. Thin cylinder

A

A

88
Q

The only thing you have to take care of is that the hardness
of the gasket shall always be less than flange material by at
least ____ BHN.
A. 40 C. 60
B. 50 D. 70

A

B

89
Q

Which of the following is not the type of manifold gaskets?
A. Felbestos C. Metal encased
B. Metal embossed D. Shimbestos

A

D

90
Q

Which non-metallic gasket can be used for hightemperature service?
A. Graphite C. Rubber
B. PTFE D. None of these

A

A

91
Q

The thickness of flange coupling is usually taken as ______
the diameter of shaft.
A. 0.25 times C. 0.5 times
B. 0.375 times D. 0.625 times

A

C

92
Q

Which type of gasket is mostly used in heat exchanger shellchannel and cover flange joints.
A. Metal Jacketed Gasket C. Spiral Wound Gasket
B. RTJ Gasket D. None of these

A

A

93
Q

The most widely used composite type gasket is:
A. Cam profile Gasket C. PTFE Gasket
B. Metal Jacketed Gasket D. Spiral Wound Gasket

A

D

94
Q

Which of the following is a non-metallic gasket?
A. Cam profile gasket
B. Compressed non-asbestos fiber gasket (CNAF)
C. Octagonal ring gasket
D. Spiral wound gasket

A

B

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