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