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100+ Free Automotive Servicing NC II Practice Questions
TESDA Automotive Servicing NC II Competency Assessment practice questions are available now; exam metadata is being verified.
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2026 Statistics
Key Facts: Automotive Servicing NC II Exam
Competency
Assessment Grade
TESDA
4-6 hours
Total Duration
Written + Practical
₱1,300+
Average Fee
Promulgated rate
13 Core
Competencies
Training Regulations
5 years
Certificate Validity
TESDA National Certificate
1 month
Retake Wait Time
For failed units
The TESDA Automotive Servicing NC II assessment in the Philippines is the national vocational standard for auto mechanics. To pass, candidates must demonstrate competency in three areas: basic, common, and core competencies. The assessment consists of a written theory exam, oral questioning, and practical workshop demonstrations across 13 core competencies including battery, electrical, ignition, starting, charging, engine mechanical, clutch, gearboxes, brakes, and suspension systems.
Sample Automotive Servicing NC II Practice Questions
Try these sample questions to test your Automotive Servicing NC II exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.
1When measuring a crankshaft journal with a metric outside micrometer, the sleeve reading is 45.50 mm and the thimble reading aligned with the index line is 18. What is the final measured dimension of the crankshaft journal?
A.45.18 mm
B.45.50 mm
C.45.68 mm
D.47.30 mm
Explanation: To read a metric micrometer, add the sleeve reading and the thimble reading. The sleeve shows 45.50 mm, and the thimble shows 18 (which represents 0.18 mm). Adding these together: 45.50 mm + 0.18 mm = 45.68 mm.
2Which of the following precision measuring instruments is best suited for measuring the backlash of a differential ring and pinion gear set?
A.Vernier caliper
B.Dial indicator with magnetic base
C.Outside micrometer
D.Telescoping gauge
Explanation: A dial indicator is the standard tool used to measure gear backlash. The magnetic base is attached to the differential housing, and the indicator plunger is positioned perpendicular to the face of a ring gear tooth. By rocking the ring gear back and forth while holding the pinion still, the dial indicator displays the small amount of free movement (backlash).
3A technician uses a dial indicator to measure the warpage of a flywheel. If the total indicator reading (TIR) exceeds the manufacturer's limit, what condition will this most likely cause during clutch operation?
A.Clutch slippage
B.Hard gear shifting
C.Clutch chatter or pulsation
D.Premature wear of the release bearing
Explanation: Flywheel runout (warpage) causes the friction surface to wobble as it rotates. During clutch engagement, this wobble prevents smooth contact between the clutch disc, flywheel, and pressure plate, resulting in clutch chatter, vibration, or pulsation. If the warpage is severe, it can also lead to clutch drag or uneven clutch disc wear.
4When measuring cylinder bore taper and out-of-roundness, at how many positions and directions must measurements be taken using a cylinder dial gauge?
A.Only at the top and bottom of the cylinder in one direction
B.At three different heights (top, middle, bottom) and in two directions (thrust and axial)
C.At the center of the cylinder bore in four diagonal directions
D.At the piston ring travel limit in a circular sweep
Explanation: To accurately calculate cylinder taper and out-of-roundness, a cylinder dial gauge is used to measure the bore at three vertical levels: top (just below the ridge), middle, and bottom (above the piston skirt travel limit). At each level, measurements must be taken in two perpendicular directions: parallel to the crankshaft (axial) and perpendicular to the crankshaft (thrust), making a total of six measurements per cylinder.
5Which class of fire extinguisher must be used to put out a fire involving burning gasoline or engine oil in an automotive workshop?
A.Class A
B.Class B
C.Class C
D.Class D
Explanation: Class B fire extinguishers are specifically rated for flammable liquids, such as gasoline, diesel, engine oil, paint, and solvents, which are common in automotive shops. Class B extinguishers work by smothering the fire and preventing the release of flammable vapors.
6What is the proper metric torque value unit used when tightening cylinder head bolts to manufacturer specifications?
A.Newton-meters (N·m)
B.Pounds per square inch (psi)
C.Kilograms per square centimeter (kg/cm²)
D.Foot-pounds (ft-lbs)
Explanation: Newton-meters (N·m) is the standard metric (SI) unit of torque used in automotive repair manuals to specify the tightening force of bolts and fasteners. Kilopond-meters (kp·m) or kilogram-force-meters (kgf·m) are also used in older metric systems, but N·m is the modern standard.
7When using a vernier caliper to measure the outer diameter of a wheel hub, what part of the caliper must contact the hub surface?
A.The upper small jaws
B.The depth rod at the tail of the beam
C.The lower large jaws
D.The main beam scale markings
Explanation: The lower, larger jaws of a vernier caliper are designed specifically for measuring outside dimensions (outer diameter, thickness, length). The workpiece should be positioned deep within the jaws, ensuring flat contact, without using the thin tips of the jaws which can wear or flex.
8A technician tests a 12V lead-acid battery using a hydrometer. Cell #3 reads 1.150 specific gravity, while all other cells read 1.265. What does this result indicate about the battery's condition?
A.The battery is fully charged and in good condition.
B.The battery is discharged but can be successfully recharged.
C.Cell #3 has a short circuit or is defective, requiring battery replacement.
D.The electrolyte level in cell #3 is too high and needs acid addition.
Explanation: A specific gravity reading of 1.265 indicates a fully charged cell, while a reading of 1.150 indicates a fully discharged cell. A difference of more than 0.050 specific gravity points between cells indicates that the low cell is defective, shorted, or has failed. In this case, the battery must be replaced, as a single bad cell prevents the battery from holding a charge.
9When performing a battery capacity (load) test on a 12-volt battery rated at 600 Cold Cranking Amps (CCA), what is the correct load that must be applied and for how long?
A.600 amps for 15 seconds
B.300 amps for 15 seconds
C.150 amps for 30 seconds
D.600 amps for 3 seconds
Explanation: The standard battery load testing procedure requires applying a load equal to one-half of the battery's CCA rating for exactly 15 seconds. For a 600 CCA battery, the applied load is 300 amps (600 / 2 = 300). During the test, the battery voltage must not drop below 9.6 volts at an electrolyte temperature of 21°C (70°F).
10When connecting jumper cables to jump-start a vehicle with a dead battery, what is the correct sequence and location for the final ground (-) connection?
A.To the negative (-) terminal of the dead battery
B.To the positive (+) terminal of the booster battery
C.To a clean metal ground on the engine block of the disabled vehicle, away from the dead battery
D.To the chassis of the booster vehicle close to its fuel tank
Explanation: The final connection must be made to a clean, unpainted metal part of the engine block or frame of the disabled vehicle, far away from the battery. Lead-acid batteries release highly explosive hydrogen gas during charging and discharging. Making the final negative connection on the engine block ensures that any spark generated during connection occurs far away from the battery, preventing an explosion.
About the Automotive Servicing NC II Practice Questions
Verified exam format metadata for TESDA Automotive Servicing NC II Competency Assessment is pending. The practice questions above remain available while official exam length, timing, passing score, fee, and administrator details are reviewed.