Industrial Maintenance - Chapter 4 B Questions and Answers 2025

Industrial Maintenance - Chapter 4 B

A ___-class lever is a lever that has the effort located between the fulcrum and the
resistance.
A. first
B. second
C. third
D. fourth - answerC. third

___ is heat transfer that occurs within a fluid when currents circulate between warm and
cool regions.
A. Radiation
B. Conduction
C. Convection
D. Induction - answerC. Convection

The ___ test is a metal identification test where a metal sample is broken to check for
ductility and grain size.
A. file
B. chip
C. fracture
D. spark - answerC. fracture

Bolts and screws are classified into grades based on their ___.
A. length and shape
B. tensile strength and yield strength
C. head style
D. thread lock coating - answerB. tensile strength and yield strength

Exposed metal parts of lathes and other precision equipment are coated with a ___ to
prevent corrosion of the metal before the equipment is shipped.
A. greaselike sealant
B. gritty paint
C. fine, clean sand
D. primer - answerA. greaselike sealant

Do not use an electric tool on ___.
A. painted workpieces
B. workpieces in a confined space
C. wet or damp floors
D. broken or splintered workpieces - answerC. wet or damp floors