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