MEng 154 lecture 2

This is a theory in cyclic and impact loading, which states that damage at any stress level, is proportional to number of cycles. What is this theory commonly called?

• Miner’s Rule

• Paris Power Law

• Goodman Rule

• Manson-Coffin Relationship

What is the ability of the material to absorb energy up to fracture?

• Toughness

• Resilience

• Rigidity

• Stiffness

The study of lubrication, friction, and wear of moving or stationary parts is known as:

• Lubrication

• Tribology

• Hydrodynamics

• Hydrostatics

In braking, the term backstop refers to a brake that is:

• Self energizing

• Self locking in one direction

• Self locking in both directions

• Any of these

These steels (SAE Steels 1006, 1008, 1010, 1015) are the lowest carbon steels of the plain carbon type, and are selected where - ________ is the primary requisite of the user.

• Strength

• Ductility

• Cold formability

• Durability

In laminated spring the strips are provided in different lengths for:

• Economy

• Reduction in weight

• Improved appearance

• Equal distribution of stress

The service factor of a gear may be taken as ____ if an electric motor drives a centrifugal blower.

• 1

• 2

• 3

• 4

One of these materials is not a structural steel.

• Low carbon steel

• Tool and die steel

• Stainless steel

• Medium carbon steel

The compressive strength of fully cured concrete is most directly related to:

• Sand-gravel ratio

• Absolute volume of cement

• Fineness modulus

• Water-cement ratio

Also called eccentrically loaded bearing is _________.

• Full bearings

• Offset bearings

• Partial bearings

• Fitted bearings