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