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