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