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31 Cards in this Set
- Front
- Back
T OR F
CROSS SECTIONS SHOW SOIL MORE READILY THAN DULL FIBERS HAVING ROUND CROSS SECTIONS |
TRUE
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COVERING POWER
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THE ABILITY OF A TEXTILE STRUCTURE TO COVER OR CONCEAL AN AREA WITHOUT UNDUE WEIGHT. THE EFFECTIVENESS WITH WHICH FIBERS COVER A SURFACE DEPENDS ON STRUCTURAL FEATURES - ACROSS-SECTIONAL SHAPE AND LONGITUDINAL CONFIGURATION - AND SPECIFIC GRAVITY. FIBERS WITH A NATURAL OR ENGINEERED CRIMP OR COILED CONFIGURATION COVER MORE SURFACE AREA THAN DO STRAIGHT FIBERS.
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OTHER THINGS BEING EQUAL, WHICH FIBER WOULD PROVIDE A FABRIC WITH THE GREATEST COVERING POWER - POLYESTER, NYLON OR OLEFIN?
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OLEFIN
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COVERING POWER MAY BE EXPLAINED AS THE ABILITY OF A TEXTILE STRUCTURE TO COVER OR CONCEAL MAXIMUM SURFACE AREA WITH ________ WEIGHT
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MINIMUM
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ASSUMING EQUAL DIAMETERS: THE FIBER WITH A ____ SPECIFIC GRAVITY WOULD PROVIDE PROVIDE HIGHER COVERING POWER THAN WOULD THE FIBER WITH A ___ SPECIFIC GRAVITY
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LOW
HIGH |
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ELECTRICAL CONDUCTIVITY AND RESISTIVITY
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TERMS OF OPPOSITE MEANING THAT DESCRIBE THE RELATIVE EASE WITH WHICH A FIBER CONDUCTS OR RESISTS THE FLOW OF ELECTRONS. THE CONTINUAL MOVEMENT AND RAPID DISSIPATION OF ELECTRONS OVER LARGE AREAS ARE CRITICAL INFLUENCES ON STATIC DEVELOPMENT.
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CONDUCTORS
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FIBERS THAT KEEP ELECTRONS FLOWING, MMINIMIZING THEIR ACCUMULATION, ARE CLASSIFIED AS CONDUCTORS, IN CONTRAST TO INSULATORS.
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EXAMPLES OF FIBERS WHICH ARE CONDUCTORS
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OLEFINS, ACRYLICS, AND MODACRYLICS ARE CONDUCTORS AS ARE METAL FIBERS.
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T OR F
FIBERS KNOWN TO BE POOR ELECTRICAL CONDUCTORS (E.G. GOOD ELECTRICAL INSULATORS SUCH AS WOOL, NYLON AND POLYESTER) TEND TO BUILD UP ELECTRONS ON THE SURFACE |
TRUE
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THE LEVEL OF RELATIVE HUMIDITY HAS
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AN IMPORTANT EFFECT ON STATIC DEVELOPMENT
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THE BASIC PROBLEM OF STATIC DEVELOPMENT IS
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THE AVAILABILITY OF ELECTRONS ON THE FIBER'S SURFACE; THE BASIC ATTEMPT TO CONTROL STATIC, THEREFORE, IS TO PREVENT THIS BUILDUP SO ELECTRONS WILL NOT BE AVAILABLE FOR TRANSFER
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THE TRIBOELECTRIC SERIES IS USED TO INDICATE THE RELATIVE AMOUNT OF HEAT ENERGY REQUIRED FOR RELEASING ELECTRONS FROM THE SURFACE OF FIBERS:
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FIBERS REQUIRING HIGHER LEVELS OF HEAT GENERATE LOWER LEVELS OF VOLTAGE ON THE BODY
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IF A PERSON WALKS WITH A SCUFFING MOVEMENT
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THE ACTION RUBS MORE ELECTRONS ON THE CARPET SURFACE
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INDIRECT YARN NUMBER SYSTEMS, SUCH AS THE COTTON COUNT, WORSTED COUNT, AND THE LINEN LEA SYSTEMS, YARN NUMBERS ARE BASED ON
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LENGTH PER UNIT OF WEIGHT
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WHICH OF THE FOLLOWING IS THE LARGEST YARN?
A) 30cc B) 40cc C) 15cc D) 10cc |
D) - 10cc
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IF ONE POUND OF CLEAN COTTON FIBER WAS USED TO PRODUCE 8400 YARDS OF YARN, HOW MANY YANKS WERE PRODUCED?
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10
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BOUCLE
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COMPLEX YARN WITH PRONOUNCED, CLOSED LOOPS THAT VARY IN SIZE AND SPACING
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CABLE YARNS
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SIMPLE YARN FORMED BY PLYING TWO OR MORE CORDS
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CARDING
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COMBING FIBERS TO ALIGN THEM IN THE YARN PRODUCTION PROCESS
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CHENILLE YARNS
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YARN-LIKE STRAND CUT FROM LENO-WOVEN FABRIC THAT HAS FINE WARP YARNS AND COARSE FILLING YARNS; FLUFFY STRAND IS SAID TO RESEMBLE A CATERPILLAR
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COMPLEX YARNS
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DECORATIVE YARNS HAVING A BASE YARN, A FANCY YARN, AND/OR A BINDER OR TIE YARN.
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FLAME YARN
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COMPLEX YARN PRODUCED BY TWISTING A SIMPLE YARN AROUND A SINGLE SLUB YARN THAT HAS LARGE AND ELONGATED AREAS OF LOW TWIST.
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GIMP YARNS
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YARN FORMED BY SPIRALLY WRAPPING ONE YARN AROUND ANOTHER, OR BY BRAIDING THREE OR MORE STRANDS AROUND ONE CENTRAL YARN.
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HAWSER
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SIMPLE YARN FORMED BY TWISTING TWO OR MORE ROPES TOGETHER
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NUB YARNS
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COMPLEX YARN WITH TIGHTLY COMPACTED PROJECTS CREATED AT IRREGULAR INTERVALS ALONG ITS LENGTH.
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RATINE YARNS
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COMPLEX YARN WITH SMALL, UNIFORMLY SPACED LOOPS OF EQUAL SIZE.
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SLUB YARNS
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COMPLEX SINGLE YARN WITH FINE AND COARSE SEGMENTS ALONG ITS LENGTH, WHICH ARE PRODUCED BY VARYING THE LEVEL OF TWIST USED IN SPINNING
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SPIRAL YARNS
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COMPLEX YARN FORMED BY TWISTING A HEAVY YARN AROUND A FINE YARN
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SPLASH YARNS
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COMPLEX YARN HAVING ELONGATED NUBS ALONG ITS LENGTH
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TEXTURING
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INTRODUCING MULTIDIMENSIONAL CONFIGURATIONS TO OTHERWISE PARALLEL AND SMOOTH FILAMENTS
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TOW
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A ROPE-LIKE BUNDLE OF MANUFACTURED FILAMENTS HAVING CRIMP BUT NO TWIST
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