A) Properties determined before manufacture based on design specifications B) Individual marks found only on fired bullets C) Features that develop after manufacturing through use D) Characteristics that change with each firing
A) 3 to 4 B) 2 to 3 C) 5 to 6 D) 7 to 8
A) Carbine Type B) Steyer Type C) Smith and Wesson D) Colt
A) 7 lands and grooves with groove width 3x land width B) 4 lands and grooves with equal width C) 6 lands and grooves with left twist D) 5 lands and grooves with right twist
A) Groove is twice as wide B) Equal width C) Groove is three times wider D) Land is twice as wide
A) Contact with magazine lips B) Excessive barrel wear C) Poor barrel alignment D) Initial movement from chamber to barrel before rotation
A) Near center of primer cup B) Perfect barrel alignment C) Worn-out rifling D) Normal firing conditions
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) Backwards movement against breech face B) Extraction process C) Magazine insertion D) Forward movement of bullet
A) Properties determined before manufacture B) Random imperfection from machining C) Individual markings from use D) Feature that develop after manufacture
A) Bore diameter B) Wear pattern from regular use C) Direction of twist D) Number of land and grooves
A) Predetermined by manufacturers B) Standard specification C) Design specifications D) Feature arising post- manufacture
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 complete barrel length B) The space between grooves C) The depressed portions of the bore D) The elevated portion of the bore
A) The bore diameter B) The depressed portions between lands C) The elevated portion between lands D) The rifling pitch
A) Measuring the bore diameter B) Subtracting groove width from circumference C) Adding all groove width D) Measuring the groove depth
A) The distance for complete rifling turn B) The width of the lands C) The depth of the grooves D) The bore diameter measurements
A) Several inches depth B) A few thousandths of an inch deep C) One inch deep D) One centimeter deep
A) Bore diameter B) Land width C) Groove depth D) Pitch of rifling
A) 6to8 B) 3to8 C) 1to3 D) 12to15
A) Original design specifications B) Machine imperfection C) Standard measurements D) Pre-manufacturing decision
A) The rifling pitch B) The groove width C) The bore diameter D) The groove depth
A) Determine firing speed B) Indicate manufacturing C) Aid in firearms identification D) Show wear pattern
A) Number of groove B) Bore diameter C) Machine imperfection D) Direction of twist
A) Increase barrel strength B) Decrease barrel wear C) Impart spin to the bullet D) Reduce recoil
A) Individual characteristics B) Class characteristics C) Design specifications D) Manufacturer specifications
A) An individual characteristics B) A post- manufacture feature C) A usage pattern D) A class characteristics
A) Ogive B) nose or ogive C) Mouth D) Nose
A) Shearing mark B) Magazine lip mark C) Firing pin Mark D) Extractor mark
A) Smith and Wesson B) Steyer type C) Colt D) Carbine type
A) Six B) Five C) Seven D) Four
A) Direction of twist B) All of the above C) Width ratio of grooves to lands D) Number of lands and grooves
A) Winchester B) Steyer type C) Carbine type D) Smith and Wesson
A) Four lands and grooves , right twist B) Six land and grooves ,left twist grooves 3xwider than lands C) Six lands and grooves, left twist D) Seven lands and grooves , right twist
A) 3:1 B) 1:1 C) 2:1 D) 4:1
A) Colt B) Browning C) Winchester D) Webley
A) Grooves are twice as wide as lands B) Grooves are three time winder than lands C) Lands are twice as wide as grooves D) Equal width
A) 7 lands and grooves , left twist B) 7 lands and grooves, right twist , grooves 3xwider wider than lands C) 6 lands and grooves , left twist D) 6 land and grooves , right twist
A) Smith and Wesson B) Browning C) Carbine Type D) Winchester
A) Marks caused by the grooves of the barrel B) Marks from forward movement in revolvers C) Depression caused by elevated portions of the bore D) Marks from poorly aligned barrels
A) Skid marks B) Land marks C) Grooves marks D) Stripping marks
A) Excessive barrel oiling B) Poor cylinder alignment C) Chamber irregularities D) Worn- on out
A) Automatic pistol B) Revolver C) Shotguns D) Rifles
A) Shaving marks B) Stripping marks C) Slippage marks D) Skid marks
A) On the case body B) On the extracting groove C) Near center of primer cup D) Near the rim
A) Magazine pressure B) Ejection mechanism C) Backwards movement against breech face D) Forward movement of the bullet
A) Primer cup B) Extracting groove C) Case body D) Rim cavity
A) Shearing marks B) Chamber marks C) Ejection marks D) Magazine lip marks
A) Primary firing pin mark B) Secondary firing pin mark C) Testiary firing pin Mark D) Auxiliary firing pin mark
A) Extracting groove B) Primer surface C) Case body D) Two side of the rim
A) Firing pin impact B) Magazine pressure C) Extractor movement D) Chamber wall irregularities
A) Land and grooves marks B) Magazine lip and chamber marks C) Shearing and stripping marks D) Ejector and extractor marks
A) Anterior portion B) Posterior portion C) Throughout the bullet D) Middle section
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 oversized barrels,stripping in worn- out barrel B) Slippage occurs in new barrels, stripping old barrel C) Slippage occurs in rifles, stripping in revolvers D) Slippage occurs in clean barrels,stripping in dirty barrel
A) Center of primer B) Rim cavity C) Extracting groove D) Case body
A) Chamber and magazine marks B) Land and groove marks C) Firing pin and breech face marks D) Ejector and extractor marks
A) Corroded chamber walls B) Worn - out rifling C) Misaligned cylinder and barrel D) Excessive oil in barrel
A) Manufacturing variation in ammunition B) Bullet deformation upon impact C) Time elapsed since firing D) Environmental factors affecting the bullet
A) Overall shell length B) Primer strike marks C) Powder residue patterns D) Shell case color
A) Bullet weight B) Land and groove impression C) Ejector marks D) Bullet composition
A) Storage condition of shells B) Time difference between firings C) Weather conditions during firing D) Different ammunition manufacturers
A) Safety mechanism operation B) Barrel integrity C) Trigger mechanism functionality D) Serial number condition
A) Weight measurements B) Chemical composition testing C) Comparison microscope D) Digital imaging analysis
A) Similar oxidation pattern B) Identical breech face marks C) Same manufacturer marks D) Similar gunpowder residue
A) Ammunition brand difference B) Storage temperature C) Firearms cleaning history D) Lead fouling in the barrel
A) Bullet material composition B) Bullet weight C) Bullet color D) Bullet diameter measurements
A) Extractions marks B) Shell rotation patterns C) Primer depth D) Case length
A) Mutilating,altering nature , and contaminating B) Moving ,arranging , and cleaning C) Marking,analyzing , and collecting D) Managing,authenticating ,and cataloging
A) Along the bullets length B) On the bullet circumstances only C) On the rifling marks D) At that nose ogive or base
A) On the body of the shell B) On the firing pin impression C) Outside,near the open mouth D) Inside near the open . Mouth
A) Barrel, cylinder ,and frame B) Trigger,hammer,and grip C) Chamber,stock and muzzle D) Magazine ,slide ,and sight
A) Y B) O C) X D) Z
A) The lab technician B) The lead investigator C) The forensics specialist D) The recovering officer
A) On the exterior only B) On any visible surface C) On parts the can never be replaced D) On replaceable parts
A) Hammer B) Trigger guard C) Magazine D) Slide
A) Making temporary marks for identification B) Making permanent marks with officer initials C) Altering the evidence for better storage D) Using chemical cleaners to preserve evidence
A) To measure bullet diameter B) To examine barrel rifling C) To determine weight of bullets and pellets D) To compare fired shell
A) Simultaneously view two spicemen B) Take photograph automatically C) Only examine one bullet at at time D) Measure bullet weight
A) Viewing large solid surface B) Determining rifling pitch C) Measuring bullet weight D) Internal barrel examinations
A) It uses cotton for bullet recovery B) It measure barrel length C) It has multiple microscope lenses D) It determine bullet weight
A) Better measurements accuracy B) Reduced eye train due to screen projection C) Higher magnification capability D) Faster processing time
A) Sand B) Ordinary cotton C) Water D) Steel plate
A) Barrel length B) Bullet weight C) Bullet diameter D) Distance traveled in one complete rotation
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) Rifli pitch B) Bullet diameter C) Shell casing length D) Barrel length
A) Determine bullet weight B) Measure bullet diameter C) Compare fired bullet D) Examine internal barrel surface
A) Determining bore diameter B) Measuring bullet weight C) Comparing fired shell D) Measuring rifling pitch
A) 39 inches B) 129inches C) 24inches D) 12 inches
A) Helicometer B) Comparison projector C) Micrometer D) Taper gauge
A) Barrel length B) Class characteristics C) Bullet weight D) Bore diameter
A) Shadowgraph B) Taper gauge C) Helixometer D) Onoscope
A) 1/2 inches B) 1/4 inches C) 1/8 inches D) 1 inches
A) Taper gauge B) Helixometer C) Bullet comparison microscope D) Stereoscopic microscope
A) 12 inches B) 120 inches C) 39 inches D) 24 inches
A) Helixometer B) Micrometer C) Onoscope D) Caliper
A) Measurements accuracy B) Display method C) Specimen capacity D) Magnification capability |