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