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