A) Properties determined before manufacture based on design specifications B) Features that develop after manufacturing through use C) Characteristics that change with each firing D) Individual marks found only on fired bullets
A) 3 to 4 B) 5 to 6 C) 7 to 8 D) 2 to 3
A) Smith and Wesson B) Steyer Type C) Carbine Type D) Colt
A) 7 lands and grooves with groove width 3x land width B) 6 lands and grooves with left twist C) 5 lands and grooves with right twist D) 4 lands and grooves with equal width
A) Land is twice as wide B) Equal width C) Groove is three times wider D) Groove is twice as wide
A) Initial movement from chamber to barrel before rotation B) Excessive barrel wear C) Poor barrel alignment D) Contact with magazine lips
A) Normal firing conditions B) Worn-out rifling C) Near center of primer cup D) Perfect barrel alignment
A) On the case body B) At the cartridge mouth C) Near center of primer cup D) On the rim
A) Firing pin and breech face mark B) Magazine lip and chamber marks C) Chamber and shearing marks D) Ejector and extractor marks only
A) Forward movement of bullet B) Extraction process C) Magazine insertion D) Backwards movement against breech face
A) Individual markings from use B) Feature that develop after manufacture C) Properties determined before manufacture D) Random imperfection from machining
A) Number of land and grooves B) Wear pattern from regular use C) Direction of twist D) Bore diameter
A) Feature arising post- manufacture B) Predetermined by manufacturers C) Standard specification D) Design specifications
A) The groove width B) The land elevation C) The pitch rifling D) The caliber or gauge
A) Seven to eight B) Three to four C) Nine to ten D) Five to six
A) The elevated portion of the bore B) The complete barrel length C) The depressed portions of the bore D) The space between grooves
A) The elevated portion between lands B) The rifling pitch C) The depressed portions between lands D) The bore diameter
A) Subtracting groove width from circumference B) Measuring the bore diameter C) Measuring the groove depth D) Adding all groove width
A) The distance for complete rifling turn B) The depth of the grooves C) The bore diameter measurements D) The width of the lands
A) A few thousandths of an inch deep B) One centimeter deep C) Several inches depth D) One inch deep
A) Land width B) Pitch of rifling C) Bore diameter D) Groove depth
A) 1to3 B) 12to15 C) 3to8 D) 6to8
A) Standard measurements B) Original design specifications C) Pre-manufacturing decision D) Machine imperfection
A) The bore diameter B) The groove width C) The rifling pitch D) The groove depth
A) Show wear pattern B) Determine firing speed C) Indicate manufacturing D) Aid in firearms identification
A) Machine imperfection B) Number of groove C) Direction of twist D) Bore diameter
A) Impart spin to the bullet B) Decrease barrel wear C) Increase barrel strength D) Reduce recoil
A) Manufacturer specifications B) Class characteristics C) Individual characteristics D) Design specifications
A) A class characteristics B) A post- manufacture feature C) A usage pattern D) An individual characteristics
A) Mouth B) Nose C) Ogive D) nose or ogive
A) Firing pin Mark B) Magazine lip mark C) Extractor mark D) Shearing mark
A) Colt B) Smith and Wesson C) Steyer type D) Carbine type
A) Four B) Six C) Five D) Seven
A) Number of lands and grooves B) Direction of twist C) Width ratio of grooves to lands D) All of the above
A) Steyer type B) Winchester C) Smith and Wesson D) Carbine type
A) Six land and grooves ,left twist grooves 3xwider than lands B) Seven lands and grooves , right twist C) Four lands and grooves , right twist D) Six lands and grooves, left twist
A) 4:1 B) 1:1 C) 3:1 D) 2:1
A) Webley B) Browning C) Winchester D) Colt
A) Grooves are three time winder than lands B) Equal width C) Grooves are twice as wide as lands D) Lands are twice as wide as grooves
A) 7 lands and grooves , left twist B) 7 lands and grooves, right twist , grooves 3xwider wider than lands C) 6 land and grooves , right twist D) 6 lands and grooves , left twist
A) Carbine Type B) Winchester C) Smith and Wesson D) Browning
A) Marks caused by the grooves of the barrel B) Marks from poorly aligned barrels C) Depression caused by elevated portions of the bore D) Marks from forward movement in revolvers
A) Skid marks B) Land marks C) Grooves marks D) Stripping marks
A) Chamber irregularities B) Worn- on out C) Poor cylinder alignment D) Excessive barrel oiling
A) Automatic pistol B) Revolver C) Rifles D) Shotguns
A) Stripping marks B) Slippage marks C) Skid marks D) Shaving marks
A) Near the rim B) On the case body C) On the extracting groove D) Near center of primer cup
A) Magazine pressure B) Forward movement of the bullet C) Ejection mechanism D) Backwards movement against breech face
A) Extracting groove B) Rim cavity C) Case body D) Primer cup
A) Shearing marks B) Chamber marks C) Magazine lip marks D) Ejection marks
A) Primary firing pin mark B) Auxiliary firing pin mark C) Testiary firing pin Mark D) Secondary firing pin mark
A) Two side of the rim B) Case body C) Extracting groove D) Primer surface
A) Extractor movement B) Firing pin impact C) Magazine pressure D) Chamber wall irregularities
A) Land and grooves marks B) Magazine lip and chamber marks C) Ejector and extractor marks D) Shearing and stripping marks
A) Anterior portion B) Throughout the bullet C) Middle section D) Posterior portion
A) The same number as land marks B) No specific correlation C) Twice the number of land marks D) Half the number of land marks
A) Slippage occurs in new barrels, stripping old barrel B) Slippage occurs in clean barrels,stripping in dirty barrel C) Slippage occurs in oversized barrels,stripping in worn- out barrel D) Slippage occurs in rifles, stripping in revolvers
A) Center of primer B) Extracting groove C) Case body D) Rim cavity
A) Firing pin and breech face marks B) Ejector and extractor marks C) Chamber and magazine marks D) Land and groove marks
A) Worn - out rifling B) Corroded chamber walls C) Excessive oil in barrel D) Misaligned cylinder and barrel
A) Manufacturing variation in ammunition B) Time elapsed since firing C) Bullet deformation upon impact D) Environmental factors affecting the bullet
A) Powder residue patterns B) Overall shell length C) Primer strike marks D) Shell case color
A) Bullet weight B) Land and groove impression C) Bullet composition D) Ejector marks
A) Time difference between firings B) Different ammunition manufacturers C) Storage condition of shells D) Weather conditions during firing
A) Barrel integrity B) Trigger mechanism functionality C) Serial number condition D) Safety mechanism operation
A) Digital imaging analysis B) Chemical composition testing C) Comparison microscope D) Weight measurements
A) Same manufacturer marks B) Similar gunpowder residue C) Similar oxidation pattern D) Identical breech face marks
A) Lead fouling in the barrel B) Ammunition brand difference C) Firearms cleaning history D) Storage temperature
A) Bullet weight B) Bullet material composition C) Bullet diameter measurements D) Bullet color
A) Case length B) Primer depth C) Shell rotation patterns D) Extractions marks
A) Marking,analyzing , and collecting B) Mutilating,altering nature , and contaminating C) Moving ,arranging , and cleaning D) Managing,authenticating ,and cataloging
A) Along the bullets length B) On the bullet circumstances only C) At that nose ogive or base D) On the rifling marks
A) Inside near the open . Mouth B) On the body of the shell C) Outside,near the open mouth D) On the firing pin impression
A) Barrel, cylinder ,and frame B) Chamber,stock and muzzle C) Trigger,hammer,and grip D) Magazine ,slide ,and sight
A) Z B) X C) O D) Y
A) The recovering officer B) The lead investigator C) The forensics specialist D) The lab technician
A) On replaceable parts B) On any visible surface C) On the exterior only D) On parts the can never be replaced
A) Trigger guard B) Magazine C) Hammer D) Slide
A) Making temporary marks for identification B) Using chemical cleaners to preserve evidence C) Altering the evidence for better storage D) Making permanent marks with officer initials
A) To examine barrel rifling B) To compare fired shell C) To measure bullet diameter D) To determine weight of bullets and pellets
A) Measure bullet weight B) Simultaneously view two spicemen C) Take photograph automatically D) Only examine one bullet at at time
A) Determining rifling pitch B) Measuring bullet weight C) Viewing large solid surface D) Internal barrel examinations
A) It measure barrel length B) It has multiple microscope lenses C) It uses cotton for bullet recovery D) It determine bullet weight
A) Reduced eye train due to screen projection B) Higher magnification capability C) Better measurements accuracy D) Faster processing time
A) Sand B) Water C) Ordinary cotton D) Steel plate
A) Distance traveled in one complete rotation B) Bullet diameter C) Bullet weight D) Barrel length
A) It can only measure barrel length B) Its used for weight measurements C) It's used for large measurements only D) It's used for more precise measurements
A) Shell casing length B) Rifli pitch C) Bullet diameter D) Barrel length
A) Compare fired bullet B) Measure bullet diameter C) Determine bullet weight D) Examine internal barrel surface
A) Measuring rifling pitch B) Determining bore diameter C) Measuring bullet weight D) Comparing fired shell
A) 129inches B) 24inches C) 12 inches D) 39 inches
A) Micrometer B) Comparison projector C) Taper gauge D) Helicometer
A) Barrel length B) Class characteristics C) Bullet weight D) Bore diameter
A) Onoscope B) Shadowgraph C) Helixometer D) Taper gauge
A) 1 inches B) 1/8 inches C) 1/2 inches D) 1/4 inches
A) Helixometer B) Stereoscopic microscope C) Bullet comparison microscope D) Taper gauge
A) 12 inches B) 24 inches C) 39 inches D) 120 inches
A) Micrometer B) Helixometer C) Onoscope D) Caliper
A) Display method B) Magnification capability C) Measurements accuracy D) Specimen capacity |