Always in single shear
Always in double shear
Either in single shear or double shear
Any one of these
B. Always in double shear
Half
Same
Double
None of the above
Brittle
Ductile
Elastic
Plastic
Is less flexible
Has a much smaller load carrying capacity
Does not provide much warning before failure
Provides much greater time for remedial action before failure
Has a head on one end and a nut fitted to the other
Has head at one end and other end fits into a tapped hole in the other part to be joined
Has both the ends threaded
Is provided with pointed threads
10° to 15°
15° to 20°
20° to 35°
35° to 50°
A key is used as a temporary fastening
A key is subjected to tensile stresses
A key is always inserted parallel to the axis of the shaft
A key prevents relative motion between the shaft and boss of the pulley
Same
Higher
Lower
None of these
Major diameter
Minor diameter
Pitch diameter
Core diameter
d/2
d/3
3d/4
d/4
(WD/ πd3) × K
(2WD/ πd3) × K
(4WD/ πd3) × K
(8WD/ πd3) × K
Same in both cases
2 times more
3 times more
4 times more
Bolt
Tap bolt
Stud
None of these
Friction angle is less than helix angle
Friction angle is more than helix angle
Friction angle is equal to helix angle
Efficiency of screw is 100%
Zero
Less than one
Greater than one
None of these
Basic size is 100 mm
Actual size is 100 mm
Difference between the actual size and basic size is 100 mm
None of the above
Heavy thrust load only
Small angular displacement of shafts
Radial load at high speed
Combined thrust and radial loads at high speed
40°
122°
136°
152°
Static load
Dynamic load
Impact load
Completely reversed load
45 to 60 %
63 to 70 %
70 to 83 %
80 to 90 %
10 times
5 times
15 times
20 times
Increase the key length
Increase the key depth
Increase the key width
Decrease the key length
Bolts and nuts
Studs
Headless taper bolts
None of these
In a direction parallel to the cam axis
In a direction perpendicular to the cam axis
In any direction irrespective of cam axis
Along the cam axis
First type
Second type
Third type
Any one of these
The pitch of rivets is obtained by equating the tearing resistance of the plate to the shearing resistance of the rivets
The pitch of rivets should not be less than 2d, where d is the diameter of rivet hole
The maximum value of the pitch of rivets for a longitudinal joint of a boiler, as per I.B.R., is given by Pmax = C.t + 41.28 mm
According to I.B.R., the thickness of butt strap shall not be less than 5 mm
Eutectoid steel
Hypereutectoid steel
Hypo-eutectoid steel
None of these
Elasticity
Endurance
Strength
Toughness
Axial load only
Both radial and axial loads and the ratio of these being greater than unity
Radial load only
Both radial and axial loads and the ratio of these being less than unity
Metric
Buttress
Square
NPT (national pipe threads)
Low efficiency
High efficiency
High load lifting capacity
High mechanical advantage