A) Properties determined before manufacture based on design specifications B) Characteristics that change with each firing C) Individual marks found only on fired bullets D) Features that develop after manufacturing through use
A) 2 to 3 B) 5 to 6 C) 7 to 8 D) 3 to 4
A) Colt B) Smith and Wesson C) Steyer Type D) Carbine Type
A) 7 lands and grooves with groove width 3x land width B) 4 lands and grooves with equal width C) 5 lands and grooves with right twist D) 6 lands and grooves with left twist
A) Groove is twice as wide B) Equal width C) Land is twice as wide D) Groove is three times wider
A) Initial movement from chamber to barrel before rotation B) Contact with magazine lips C) Poor barrel alignment D) Excessive barrel wear
A) Normal firing conditions B) Perfect barrel alignment C) Near center of primer cup D) Worn-out rifling
A) On the case body B) On the rim C) At the cartridge mouth D) Near center of primer cup
A) Chamber and shearing marks B) Firing pin and breech face mark C) Magazine lip and chamber marks D) Ejector and extractor marks only
A) Magazine insertion B) Forward movement of bullet C) Extraction process D) Backwards movement against breech face
A) Properties determined before manufacture B) Feature that develop after manufacture C) Individual markings from use D) Random imperfection from machining
A) Wear pattern from regular use B) Direction of twist C) Bore diameter D) Number of land and grooves
A) Feature arising post- manufacture B) Standard specification C) Design specifications D) Predetermined by manufacturers
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) Five to six D) Seven to eight
A) The depressed portions of the bore B) The complete barrel length C) The elevated portion of the bore D) The space between grooves
A) The elevated portion between lands B) The depressed portions between lands C) The rifling pitch D) The bore diameter
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 bore diameter measurements C) The distance for complete rifling turn D) The width of the lands
A) Several inches depth B) A few thousandths of an inch deep C) One centimeter deep D) One inch deep
A) Bore diameter B) Land width C) Pitch of rifling D) Groove depth
A) 3to8 B) 6to8 C) 1to3 D) 12to15
A) Pre-manufacturing decision B) Original design specifications C) Standard measurements D) Machine imperfection
A) The rifling pitch B) The groove depth C) The bore diameter D) The groove width
A) Determine firing speed B) Indicate manufacturing C) Show wear pattern D) Aid in firearms identification
A) Number of groove B) Direction of twist C) Machine imperfection D) Bore diameter
A) Reduce recoil B) Impart spin to the bullet C) Increase barrel strength D) Decrease barrel wear
A) Class characteristics B) Manufacturer specifications C) Individual characteristics D) Design specifications
A) A class characteristics B) A usage pattern C) A post- manufacture feature D) An individual characteristics
A) nose or ogive B) Nose C) Mouth D) Ogive
A) Extractor mark B) Firing pin Mark C) Shearing mark D) Magazine lip mark
A) Carbine type B) Steyer type C) Smith and Wesson D) Colt
A) Four B) Seven C) Five D) Six
A) Number of lands and grooves B) Width ratio of grooves to lands C) All of the above D) Direction of twist
A) Winchester B) Steyer type C) Carbine type D) Smith and Wesson
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) 1:1 B) 3:1 C) 4:1 D) 2:1
A) Colt B) Webley C) Browning D) Winchester
A) Lands are twice as wide as grooves B) Grooves are three time winder than lands C) Equal width D) Grooves are twice as wide as lands
A) 6 land and grooves , right twist B) 7 lands and grooves, right twist , grooves 3xwider wider than lands C) 6 lands and grooves , left twist D) 7 lands and grooves , left twist
A) Winchester B) Carbine Type C) Browning D) Smith and Wesson
A) Marks from poorly aligned barrels B) Marks caused by the grooves of the barrel C) Depression caused by elevated portions of the bore D) Marks from forward movement in revolvers
A) Skid marks B) Stripping marks C) Land marks D) Grooves marks
A) Worn- on out B) Chamber irregularities C) Poor cylinder alignment D) Excessive barrel oiling
A) Rifles B) Revolver C) Automatic pistol D) Shotguns
A) Stripping marks B) Shaving marks C) Slippage marks D) Skid marks
A) Near center of primer cup B) On the extracting groove C) Near the rim D) On the case body
A) Backwards movement against breech face B) Magazine pressure C) Ejection mechanism D) Forward movement of the bullet
A) Primer cup B) Rim cavity C) Extracting groove D) Case body
A) Ejection marks B) Chamber marks C) Magazine lip marks D) Shearing marks
A) Auxiliary firing pin mark B) Testiary firing pin Mark C) Secondary firing pin mark D) Primary firing pin mark
A) Primer surface B) Case body C) Two side of the rim D) Extracting groove
A) Magazine pressure B) Chamber wall irregularities C) Firing pin impact D) Extractor movement
A) Magazine lip and chamber marks B) Shearing and stripping marks C) Ejector and extractor marks D) Land and grooves marks
A) Throughout the bullet B) Middle section C) Posterior portion D) Anterior portion
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 oversized barrels,stripping in worn- out barrel B) Slippage occurs in clean barrels,stripping in dirty barrel C) Slippage occurs in rifles, stripping in revolvers D) Slippage occurs in new barrels, stripping old barrel
A) Extracting groove B) Case body C) Rim cavity D) Center of primer
A) Ejector and extractor marks B) Land and groove marks C) Firing pin and breech face marks D) Chamber and magazine marks
A) Worn - out rifling B) Corroded chamber walls C) Excessive oil in barrel D) Misaligned cylinder and barrel
A) Time elapsed since firing B) Bullet deformation upon impact C) Manufacturing variation in ammunition D) Environmental factors affecting the bullet
A) Primer strike marks B) Shell case color C) Overall shell length D) Powder residue patterns
A) Land and groove impression B) Bullet weight C) Bullet composition D) Ejector marks
A) Weather conditions during firing B) Time difference between firings C) Different ammunition manufacturers D) Storage condition of shells
A) Serial number condition B) Safety mechanism operation C) Barrel integrity D) Trigger mechanism functionality
A) Digital imaging analysis B) Chemical composition testing C) Weight measurements D) Comparison microscope
A) Similar gunpowder residue B) Same manufacturer marks C) Similar oxidation pattern D) Identical breech face marks
A) Storage temperature B) Firearms cleaning history C) Lead fouling in the barrel D) Ammunition brand difference
A) Bullet diameter measurements B) Bullet material composition C) Bullet color D) Bullet weight
A) Primer depth B) Shell rotation patterns C) Case length D) Extractions marks
A) Marking,analyzing , and collecting B) Managing,authenticating ,and cataloging C) Mutilating,altering nature , and contaminating D) Moving ,arranging , and cleaning
A) On the rifling marks B) Along the bullets length C) On the bullet circumstances only D) At that nose ogive or base
A) On the body of the shell B) On the firing pin impression C) Inside near the open . Mouth D) Outside,near the open mouth
A) Trigger,hammer,and grip B) Barrel, cylinder ,and frame C) Magazine ,slide ,and sight D) Chamber,stock and muzzle
A) Z B) O C) X D) Y
A) The recovering officer B) The lab technician C) The forensics specialist D) The lead investigator
A) On parts the can never be replaced B) On the exterior only C) On any visible surface D) On replaceable parts
A) Trigger guard B) Slide C) Magazine D) Hammer
A) Making permanent marks with officer initials B) Using chemical cleaners to preserve evidence C) Making temporary marks for identification D) Altering the evidence for better storage
A) To determine weight of bullets and pellets B) To measure bullet diameter C) To examine barrel rifling 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) Viewing large solid surface B) Determining rifling pitch C) Measuring bullet weight D) Internal barrel examinations
A) It uses cotton for bullet recovery B) It measure barrel length C) It determine bullet weight D) It has multiple microscope lenses
A) Reduced eye train due to screen projection B) Higher magnification capability C) Better measurements accuracy D) Faster processing time
A) Steel plate B) Sand C) Water D) Ordinary cotton
A) Distance traveled in one complete rotation B) Bullet diameter C) Bullet weight D) Barrel length
A) It's used for more precise measurements B) Its used for weight measurements C) It can only measure barrel length D) It's used for large measurements only
A) Bullet diameter B) Barrel length C) Rifli pitch D) Shell casing length
A) Measure bullet diameter B) Compare fired bullet C) Examine internal barrel surface D) Determine bullet weight
A) Measuring bullet weight B) Comparing fired shell C) Measuring rifling pitch D) Determining bore diameter
A) 12 inches B) 129inches C) 39 inches D) 24inches
A) Micrometer B) Helicometer C) Taper gauge D) Comparison projector
A) Class characteristics B) Bullet weight C) Barrel length D) Bore diameter
A) Helixometer B) Taper gauge C) Onoscope D) Shadowgraph
A) 1 inches B) 1/2 inches C) 1/8 inches D) 1/4 inches
A) Taper gauge B) Stereoscopic microscope C) Helixometer D) Bullet comparison microscope
A) 120 inches B) 39 inches C) 12 inches D) 24 inches
A) Helixometer B) Micrometer C) Onoscope D) Caliper
A) Magnification capability B) Measurements accuracy C) Display method D) Specimen capacity |