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