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