100+ Free Automotive Servicing NC II Practice Questions

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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 with a correctly sized measuring range

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.

4Which cylinder-bore measurement pattern is commonly used to reveal both taper and out-of-roundness with a dial bore gauge?

A.At the upper and lower bore positions in the thrust direction

B.At three different heights (top, middle, bottom) and in two directions (thrust and axial)

C.At the cylinder midpoint, taking four diagonal readings without changing the gauge height vertically

D.At the piston ring travel limit in a circular sweep

Explanation: Readings at upper, middle, and lower bore levels reveal change along the cylinder's length, while two perpendicular directions at each level reveal out-of-roundness. This produces six comparison points; the exact locations and any additional readings must follow manufacturer information.

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.

8After a serviceable flooded 12 V lead-acid battery has been fully charged and retested with the hydrometer readings temperature-corrected, cell #3 reads 1.150 specific gravity while the other cells read about 1.265. What does this result indicate?

A.The battery is fully charged and in good condition.

B.The cells are uniformly discharged because a single reading is insufficient after charging and temperature correction.

C.Cell #3 remains abnormally low and is likely defective; follow the service procedure for battery replacement.

D.Cell #3 needs concentrated acid added to raise its reading.

Explanation: Because the battery was fully charged and the readings were corrected and repeated, the large cell-to-cell difference points to an internal fault in cell #3 rather than uniform discharge. Confirm the result using the battery manufacturer's procedure and replace the battery when the failed-cell criterion is met; never try to correct a failed cell by adding acid.

9A conventional carbon-pile battery test procedure specifies applying one-half of the CCA rating for 15 seconds. For a 12 V battery rated at 600 CCA, what load and duration should the technician use?

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: Under the stated carbon-pile procedure, one-half of 600 CCA is 300 A, applied for 15 seconds. Whether the battery passes is then determined from the tester or battery manufacturer's temperature-corrected voltage criterion; other battery technologies or test equipment may use a different procedure.

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 a clean chassis point on the booster vehicle, close to its battery so both cables remain short during connection

Explanation: After confirming that the vehicle is approved for jump-starting and following its connection sequence, make the final negative connection at the disabled vehicle's specified remote ground or a clean engine/chassis point away from the battery and moving parts. This keeps the expected connection spark away from hydrogen that may be near the battery.

About the Automotive Servicing NC II Exam

National competency assessment in the Philippines certifying automotive technicians. The assessment includes a written theory exam, oral questioning, and hands-on practical demonstrations in a workshop.

Assessment

Performance-based assessment

Time Limit

4 to 6 hours

Passing Score

Competency-based

Exam Fee

₱1,300.00 - 1,500.00 (TESDA)

Automotive Servicing NC II Exam Content Outline

20%

Electrical Systems Servicing

Servicing the automotive battery, ignition, wiring/lighting, starting, and charging systems

25%

Engine Mechanical System Servicing

Servicing engine cooling, lubrication, fuel systems, and conducting tune-ups and diagnostic tests

35%

Underchassis and Powertrain Servicing

Servicing the clutch, differential, front axle, steering, braking, suspension systems, and performing preventive maintenance

20%

Manual Transmission Overhaul

Overhauling manual transaxles/transmissions, inspecting components, and reassembling gearboxes

How to Pass the Automotive Servicing NC II Exam

What You Need to Know

Passing score: Competency-based
Assessment: Performance-based assessment
Time limit: 4 to 6 hours
Exam fee: ₱1,300.00 - 1,500.00

Keys to Passing

Complete 500+ practice questions
Score 80%+ consistently before scheduling
Focus on highest-weighted sections
Use our AI tutor for tough concepts

Automotive Servicing NC II Study Tips from Top Performers

1Familiarize yourself with workshop safety and proper use of PPE. Assessors immediately fail candidates who perform unsafe acts.

2Practice using measuring tools. You will be asked to measure and record cylinder bore, crankshaft journal, or rotor thickness using micrometers, calipers, and dial gauges.

3Understand electrical diagnostics. Brush up on Ohm's law, voltage drop testing, and how to read wiring schematics and identify relay pins.

4Master the proper steps for common tasks such as bleeding a hydraulic brake system, performing a compression test, and jump-starting a vehicle safely.

5Be prepared for the oral questioning. Assessors will ask you to explain the operating principles of systems (e.g., 'How does a differential work?' or 'What are the symptoms of a bad voltage regulator?').

Frequently Asked Questions

What is the format of the TESDA Automotive Servicing NC II assessment?

The assessment is composed of three parts: a written test covering theoretical knowledge, oral questioning by the assessor, and a series of hands-on practical demonstrations where you must troubleshoot, service, and repair actual vehicle components in a workshop.

What is the passing score for Automotive Servicing NC II?

TESDA assessments are competency-based rather than score-based. You are graded as either 'Competent' or 'Not Yet Competent' based on whether you satisfy all the performance criteria and evidence guides in the Training Regulations.

How much is the TESDA Automotive Servicing NC II assessment fee?

The official standard assessment fee typically ranges from PHP 1,300.00 to PHP 1,500.00, including the assessor's fee. Please check with your local accredited TESDA assessment center for the exact fee promulgated in your region.

What happens if I fail the assessment?

If you are graded as 'Not Yet Competent' in some units, you can apply for reassessment after one month. You only need to be reassessed on the specific units of competency you failed. However, failing twice consecutively requires you to undergo a refresher course before a third attempt.

What are the core competencies tested in the NC II exam?

The assessment covers 13 core units of competency: servicing batteries, ignition systems, lighting/wiring, starting systems, charging systems, engine mechanicals, clutches, differentials, steering, brakes, suspensions, underchassis preventive maintenance, and overhauling manual transmissions.