NABTEB Auto Mechanics 2021 Past Questions & Answers
Practise all 8 NABTEB Auto Mechanics questions from the 2021 exam, each with a worked answer and explanation. Free CBT-format practice on web, iOS and Android.
8 questions from the 2021 NABTEB Auto Mechanics paper
Try them on paper first. The correct options and worked answers are in the app.
1.What does 'SAE 15W-40' mean on an engine oil bottle?
- A.The oil has 15 percent water and 40 percent additives
- B.The oil has low viscosity at 15°C and high viscosity at 40°C
- C.The oil viscosity is 15 at winter temperatures and 40 at engine operating temperature
- D.The oil can withstand pressures of 15 and 40 bar
2.Why is regular vehicle maintenance important?
- A.To improve fuel economy only
- B.To prevent breakdowns, extend vehicle life, maintain safety, and preserve resale value
- C.To increase engine power
- D.To reduce vehicle weight
3.A vehicle engine has poor fuel economy and rough idling. The mechanic suspects valve timing issues. Which component would be most directly responsible?
- A.The camshaft
- B.The crankshaft
- C.The spark plugs
- D.The fuel injector
4.Why do manual transmission vehicles require higher gearing (lower gear ratios) on steep hills?
- A.To reduce engine speed
- B.To provide more torque and climbing force despite lower wheel speed
- C.To reduce fuel consumption
- D.To prevent brake overheating
5.What is the main difference between drum brakes and disc brakes?
- A.Drum brakes are more powerful
- B.Disc brakes provide better cooling and consistent braking performance
- C.Drum brakes are used on all four wheels
- D.Disc brakes are cheaper
6.A vehicle starts but stalls immediately. The mechanic checks and finds weak fuel pressure. Which component is most likely faulty?
- A.The fuel filter
- B.The carburetor needle valve
- C.The fuel pump
- D.The fuel tank cap
7.What does the starter motor do?
- A.Ignites the fuel-air mixture
- B.Generates electricity while the engine runs
- C.Cranks the engine to start the combustion cycle
- D.Distributes ignition timing to each spark plug
8.What is the main purpose of the cooling system in an internal combustion engine?
- A.To reduce engine noise
- B.To remove excess heat and maintain optimal operating temperature
- C.To increase engine power
- D.To improve fuel economy
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These are real NABTEB Auto Mechanics questions from the 2021 exam, sourced from the official paper. Paper 1 (Objective) + Paper 2 (Essay) per subject. Practising a specific year shows you the style and difficulty the examiners set that year — useful for spotting recurring topics across 2005–2024.
Preparing for the NABTEB Auto Mechanics 2021 theory paper
The 2021 NABTEB Auto Mechanics paper has an objective section and a theory (essay) section — and both test the same syllabus. ExamPadi gives you the objective questions in CBT format with worked answers, the most efficient way to master the topics and the recall the theory paper rewards too.
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NABTEB Auto Mechanics 2021 — frequently asked
How many NABTEB Auto Mechanics 2021 past questions are there?
ExamPadi has 8 NABTEB Auto Mechanics questions from the 2021 exam, each with a worked answer and explanation.
Are the 2021 NABTEB Auto Mechanics answers included?
Yes — every question has a worked answer, not just the correct option.
Does this help with the NABTEB Auto Mechanics 2021 theory paper too?
ExamPadi gives you the objective (multiple-choice) NABTEB Auto Mechanics questions, each with a worked answer. The objective and theory papers test the same syllabus, so drilling these questions is also strong preparation for the 2021 theory paper.
Can I download the NABTEB Auto Mechanics 2021 questions and answers as a PDF?
You can practise every 2021 NABTEB Auto Mechanics question and answer free on the ExamPadi web and mobile apps, and the mobile app saves them for offline study — a faster, always-corrected alternative to a static PDF download.
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Yes. The free tier gives 20 questions per day across any subject and year. Pro removes the cap and unlocks full timed mock exams.