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