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