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