BOILERMAKER EXAM 4 TEST WITH UPDATED QUESTIONS & ANSWERS
The space between a thread of a bolt and its nut is called _______.
- Clearance
The amount of difference allowed from a standard is called _________.
- Tolerance
The normal method for measuring torque is _______.
- Foot-pounds (ft. lbs.)
The method of measuring the amount of torque that is applied to small bolts, nuts,
and screws
is _______
- Inch-pounds (in lbs.)
A(n) _______is a machined metal slot in a shaft and on parts such as gears and
pulleys that accept a key.
- Keyway
An approximation of the diameter of a screw is known as the screw's_______
- Nominal size
The tolerance that the threads provide between a bolt and nut determines
the__________.
- Thread classes
Fasteners with ____________ thread are used when rapid assembly or disassembly
of parts is required.
- United National Coarse (UNC) thread
The__________ thread is used on thin-walled tubes, nuts, ferrules, and couplings.
- United National Extra Fine (UNEF) thread
The __________ thread is used in fasteners when a tighter fit is desired.
- United National Fine (UNF) thread
The___________ consists of standard symbols that are used to identify thread
- Thread identification
A(n)__________ fits into a keyway and prevents parts such as gears or pulleys
from rotating
on a shaft. - Key
______ are established standards for machining threads.
- Thread standards
The ___________ publishes specifications and standards relating to fasteners.
- Society of Automotive Engineers (SAE)
One of the most important pretest requirements
is _________.
- defining the test boundaries
Pressure gauges should be connected directly
to what part of the system being tested?
- high point
Pressure gauges used for boilers system testing must be calibrated once every
_____.
- 6 months
When chemically cleaning a system , the cleani
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