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