Unitized Structural Body Repair
UPDATED ACTUAL Exam Questions and
CORRECT Answers
Unibody - CORRECT ANSWER- ✔✔Lightweight stamped sheet metal components that are
welded to each other to create a single unit.
Space Frame - CORRECT ANSWER- ✔✔Body panels can be made from plastic are steel.
Steel may be Mild, Intermediate, or HSS. Panels may hide damage to frame or structure.
Crush Zones - CORRECT ANSWER- ✔✔Structural components such as rails are designed to
collapse and bend at specific points.
Collision Energy Management - CORRECT ANSWER- ✔✔Goal is passenger protection.
Front and rear structures act as crush-able energy absorbers.
Direct Damage - CORRECT ANSWER- ✔✔POI. Easily located and diagnosed.
Indirect Damage - CORRECT ANSWER- ✔✔transmission of collision energy beyond the
area of immediate impact. Examples; Split seam sealers, pulled spot welds, misaligned
panels, buckles in steel, cracked glass, and cracked or chipped paint.
Passive Restraint Systems - CORRECT ANSWER- ✔✔Must have service manual. No two
are alike.
Datum - CORRECT ANSWER- ✔✔Imaginary plane or line beneath the vehicle. Measures
height.
Centerline - CORRECT ANSWER- ✔✔Vertical plane that passes from the front of the
vehicle to the rear. Measures Width. May have stamped marks on vehicle body structure. Is
confirmed by referencing at last 3 width measurements in the undamaged portion of the
vehicle.
, Zero Planes - CORRECT ANSWER- ✔✔Vertical plane that passes from side to side.
Confirmed by measuring 3 length measurements from the undamaged portion of the vehicle.
Symmetry - CORRECT ANSWER- ✔✔Equal on each side of the vehicle.
Asymmetrical - CORRECT ANSWER- ✔✔Unequal on each side of the vehicle. (spare tire
well)
Reference Points - CORRECT ANSWER- ✔✔Bolts or nuts, Holes, Mechanical attachment
points, Edges of panels, Door strikers, Corner of openings. Common tolerance is =/.3mm
(1/8) or all the way to 1mm (1.32).
Loaded Measurements - CORRECT ANSWER- ✔✔Drivetrain In
Unloaded Measurements - CORRECT ANSWER- ✔✔Drivetrain out
Point to Point Measurements - CORRECT ANSWER- ✔✔shortest distance between 2
reference points. AKA "as the crow flies". Uses tram or steel tape measure.
Datum Measurements - CORRECT ANSWER- ✔✔Taken at Datum plane, height differences
between reference points. Laser measuring system
Computerized Measuring System - CORRECT ANSWER- ✔✔compare data stored in a
software program or a central database. Get hard copy of measurements. Can watch while
pulling.
Steel - CORRECT ANSWER- ✔✔Cannot know what kind by visible. Must check service
manual.
Tensile Strength - CORRECT ANSWER- ✔✔Amount of pressure/force necessary to fracture
or tear steel.
UPDATED ACTUAL Exam Questions and
CORRECT Answers
Unibody - CORRECT ANSWER- ✔✔Lightweight stamped sheet metal components that are
welded to each other to create a single unit.
Space Frame - CORRECT ANSWER- ✔✔Body panels can be made from plastic are steel.
Steel may be Mild, Intermediate, or HSS. Panels may hide damage to frame or structure.
Crush Zones - CORRECT ANSWER- ✔✔Structural components such as rails are designed to
collapse and bend at specific points.
Collision Energy Management - CORRECT ANSWER- ✔✔Goal is passenger protection.
Front and rear structures act as crush-able energy absorbers.
Direct Damage - CORRECT ANSWER- ✔✔POI. Easily located and diagnosed.
Indirect Damage - CORRECT ANSWER- ✔✔transmission of collision energy beyond the
area of immediate impact. Examples; Split seam sealers, pulled spot welds, misaligned
panels, buckles in steel, cracked glass, and cracked or chipped paint.
Passive Restraint Systems - CORRECT ANSWER- ✔✔Must have service manual. No two
are alike.
Datum - CORRECT ANSWER- ✔✔Imaginary plane or line beneath the vehicle. Measures
height.
Centerline - CORRECT ANSWER- ✔✔Vertical plane that passes from the front of the
vehicle to the rear. Measures Width. May have stamped marks on vehicle body structure. Is
confirmed by referencing at last 3 width measurements in the undamaged portion of the
vehicle.
, Zero Planes - CORRECT ANSWER- ✔✔Vertical plane that passes from side to side.
Confirmed by measuring 3 length measurements from the undamaged portion of the vehicle.
Symmetry - CORRECT ANSWER- ✔✔Equal on each side of the vehicle.
Asymmetrical - CORRECT ANSWER- ✔✔Unequal on each side of the vehicle. (spare tire
well)
Reference Points - CORRECT ANSWER- ✔✔Bolts or nuts, Holes, Mechanical attachment
points, Edges of panels, Door strikers, Corner of openings. Common tolerance is =/.3mm
(1/8) or all the way to 1mm (1.32).
Loaded Measurements - CORRECT ANSWER- ✔✔Drivetrain In
Unloaded Measurements - CORRECT ANSWER- ✔✔Drivetrain out
Point to Point Measurements - CORRECT ANSWER- ✔✔shortest distance between 2
reference points. AKA "as the crow flies". Uses tram or steel tape measure.
Datum Measurements - CORRECT ANSWER- ✔✔Taken at Datum plane, height differences
between reference points. Laser measuring system
Computerized Measuring System - CORRECT ANSWER- ✔✔compare data stored in a
software program or a central database. Get hard copy of measurements. Can watch while
pulling.
Steel - CORRECT ANSWER- ✔✔Cannot know what kind by visible. Must check service
manual.
Tensile Strength - CORRECT ANSWER- ✔✔Amount of pressure/force necessary to fracture
or tear steel.
