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