(Sum of base circle radii)/cosφ

(Difference of base circle radii)/cosφ

(Sum of pitch circle radii)/cosφ

(Difference of pitch circle radii)/cosφ

A. (Sum of base circle radii)/cosφ

Thickness of plates to be riveted

Length of rivet

Diameter of head

Nominal diameter

d

1.5 d

2.5 d

2 d

Power transmitted increases

Power transmitted decreases

Power transmitted increases to a maximum value and then decreases

Power transmitted remains the same

Are lighter in weight

Offer silent operation

Can withstand shock loads

All of these

Always in single shear

Always in double shear

Either in single shear or double shear

Any one of these

Elastic strength

Yield strength

Brinell hardness number

Toughness

10° to 15°

15° to 20°

20° to 35°

35° to 50°

Combined effect of transverse shear stress and bending stress in the wire

Combined effect of bending stress and curvature of the wire

Combined effect of transverse shear stress and curvature of wire

Combined effect of torsional shear stress and transverse shear stress in the wire

Same

Double

One-half

One-fourth

One-fourth

One-third

One-half

Double

Brittle materials

Ductile materials

Brittle as well as ductile materials

Elastic materials

Pitch circle diameter × cosφ

Addendum circle diameter × cosφ

Clearance circle diameter × cosφ

Pitch circle diameter × sinφ

10°-20°

30°-40°

40°-60°

60°-80°

Low

High

Moderate

None of these

Gerber relation

Soderberg relation

Goodman relation

None of these

Diameter of bolt

0.75 × diameter of bolt

1.25 × diameter of bolt

1.5 × diameter of bolt

Twice

Four times

Eight times

Sixteen times

Plastic materials

Brittle materials

Non-ferrous materials

Ductile materials

Metric

Buttress

Square

NPT (national pipe threads)

Jam nut

Castle nut

Sawn nut

Ring nut

Low

High

Medium

None of these

There is a thick film of lubricant between the journal and the bearing

There is a thin film of lubricant between the journal and the bearing

The lubricant is forced between the journal and the bearing, by external pressure

There is no lubricant between the journal and the bearing

Best method

Extremely hazardous

Has no effect as regards fatigue strength

Cheapest method

Crimped

Honed

Flared

Bent

Metric threads of 33 numbers in 2 cm

Metric threads with cross-section of 33 mm

Metric threads of 33 mm outside diameter and 2 mm pitch

Bolt of 33 mm nominal diameter having 2 threads per cm

Varies linearly

Is uniform throughout

Varies exponentially, being more at the torque-input end

Varies exponentially, being less at the torque-input end

Elastic limit

Ultimate tensile strength

Young's modulus

Endurance limit

Helical compression spring

Spiral spring

Torsion spring

Belleville spring

Equal to

Less than

Greater than

None of these

½

1

2

4