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