Free Practice Questions for RBSE SS Voc Automotive

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Exam Review

Key Facts: RBSE SS Voc Automotive Exam

101

RBSE subject code for Automotive

RBSE 2026 subject-wise statistics

100

Typical full marks for the subject scheme

RBSE syllabus examination scheme

3.15 hrs

Typical theory paper duration

RBSE Class 12 / Varishtha Upadhyaya syllabus scheme

33%

Typical minimum pass marks (confirm circular)

RBSE examination regulations

100

Free English MCQ study questions on this page

OpenExamPrep practice bank

RBSE Senior Secondary (Class 12) Vocational Automotive (code 101) is a real Board of Secondary Education, Rajasthan public-examination subject with appeared candidates in the 2026 main examination subject-wise statistics. Typical scheme: Theory 80 + Sessional 20 = 100; passing generally 33% (and separate practical pass where applicable). Use these free MCQs for theory revision only.

Sample RBSE SS Voc Automotive Practice Questions

Try these sample questions to review concepts for the RBSE SS Voc Automotive exam. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1In a four-stroke diesel engine, combustion is initiated primarily by:

A.Compression of air to a high temperature that ignites injected fuel

B.A spark plug firing at the end of the compression stroke

C.An external glow coil that remains on during every power stroke

D.A carburetor that premixes fuel and air before compression

Explanation: Diesel (CI) engines compress only air to high temperature and pressure; fuel is injected near TDC and auto-ignites. Spark plugs and carburetors belong to spark-ignition designs.

2The main function of the piston rings in a reciprocating engine is to:

A.Connect the piston to the timing belt permanently

B.Seal combustion gases, control oil, and transfer heat to the cylinder wall

C.Open and close the intake and exhaust valves

D.Meter fuel into the combustion chamber

Explanation: Compression and oil-control rings seal the combustion chamber, scrape excess oil, and help conduct heat from the piston crown to the cylinder wall/coolant path.

3Which statement correctly describes the relationship between bore, stroke, and engine displacement for a multi-cylinder engine?

A.Displacement equals bore diameter alone, independent of stroke and cylinder count

B.Displacement equals stroke length multiplied only by the compression ratio

C.Displacement is approximately (π/4) × bore² × stroke × number of cylinders

D.Displacement is fixed by the number of valves per cylinder only

Explanation: Swept volume per cylinder is cylinder cross-sectional area times stroke; total displacement multiplies by the number of cylinders. Valve count and CR do not define swept volume.

4A high compression ratio in a spark-ignition petrol engine generally:

A.Always requires diesel fuel and glow plugs

B.Eliminates the need for an exhaust system

C.Reduces thermal efficiency because peak pressure falls

D.Improves thermal efficiency but increases knock risk if fuel octane is too low

Explanation: Higher CR improves thermodynamic efficiency but elevates end-gas temperature/pressure, promoting knock unless adequate octane fuel and control strategies are used.

5During the exhaust stroke of a four-stroke engine, which valves are typically open?

A.Only the exhaust valve

B.Only the intake valve

C.Both intake and exhaust valves fully closed for the entire stroke

D.Only a separate third scavenging valve used on all passenger cars

Explanation: On the exhaust stroke the exhaust valve opens so burned gases leave; the intake valve is closed except for brief overlap near TDC in many designs.

6Valve overlap is the period when:

A.Both valves remain closed for the entire power stroke only

B.Both intake and exhaust valves are open near TDC between exhaust and intake strokes

C.The throttle plate is fully closed and fuel is cut completely

D.The starter engages and the alternator freewheels

Explanation: Overlap is a designed cam timing interval near TDC where exhaust residual can leave while intake charge begins to enter, aiding scavenging and volumetric efficiency (within emissions/idle constraints).

7The connecting rod primarily transmits force between:

A.The camshaft and the rocker arm

B.The flywheel and the clutch disc only

C.The piston and the crankshaft

D.The oil pump and the main bearings exclusively

Explanation: The connecting rod links the reciprocating piston to the rotating crankshaft, converting linear piston motion into crank rotation.

8In a DOHC (double overhead camshaft) petrol engine, each bank typically uses:

A.A single cam in the block operating both intake and exhaust valves via pushrods only

B.No camshafts because valves are solenoid-only in all DOHC designs

C.A camshaft mounted on the crank pulley exclusively

D.Separate camshafts in the cylinder head for intake and exhaust valve trains

Explanation: DOHC places two camshafts in the head—commonly one for intake valves and one for exhaust—enabling freer porting and often VVT on each shaft.

9Engine knocking (detonation) in an SI engine is best described as:

A.Abnormal auto-ignition of end-gas creating pressure waves after the spark-initiated flame

B.Normal smooth flame-front combustion at the designed spark timing

C.Complete failure of the fuel pump with no mixture present

D.A cooling-system fan that never turns on

Explanation: Knock is uncontrolled auto-ignition of unburned end-gas, producing sharp pressure oscillations that can damage pistons and bearings if severe.

10Mean effective pressure (IMEP/BMEP concepts at senior-secondary level) is most useful because it:

A.Replaces the need for any torque or power measurement forever

B.Allows comparison of engine work output independent of displacement differences

C.Is identical to coolant temperature in °C

D.Measures only oil pressure at idle in bar

Explanation: Mean effective pressure normalizes indicated or brake work to displaced volume, enabling fair comparison of engines of different sizes and as a loading indicator.

About the RBSE SS Voc Automotive Exam

Free English-language MCQ practice for Rajasthan RBSE Senior Secondary (Class 12) Vocational Automotive (code 101), covering topics from official board syllabus scope and 2026 subject-wise result statistics. This bank is a study adaptation for concept practice — not an official paper simulation or practical substitute.

Exam sponsor: Board of Secondary Education, Rajasthan (RBSE), Ajmer. The requirements and fees below concern the certification or admission exam, separate from our free practice resources.

Assessment

Official RBSE mixed written theory paper (objective, short, and long constructed-response items as per subject design) with Theory 80 + Sessional 20 = 100 full marks, duration 3 hours 15 minutes. Local bank: English-language four-option MCQ study adaptation with explanations — not a full mixed-paper simulation. Subject code 101. Evidenced in official RBSE 2026 subject-wise main examination statistics.

Time Limit

3 hours 15 minutes (theory paper)

Passing Score

Minimum 33% marks in the subject as per RBSE examination regulations (confirm current session circulars). Where theory and practical are separate, candidates must pass each component as required by the subject scheme.

Exam / Certification Fees

As per RBSE annual examination fee notification for school/private candidates (Senior Secondary (Class 12) Vocational full board form fee is notified each cycle on rajeduboard.rajasthan.gov.in — confirm the current circular; subject papers are not separately priced on the statistics page)

Exam sponsor website

Reported exam pass rate: See RBSE subject-wise statistics for the examination year (statistics2026.htm).. This describes exam candidates, not OpenExamPrep users or results from using our resources. Exam sponsor website

Fees, eligibility, and exam policies can change. Confirm them with the exam sponsor before applying or paying.

Official sources

Our practice resources: topics covered

We aim to reflect publicly available exam outlines and topic information in our study resources. Coverage, format, and difficulty may differ from the actual exam, and we cannot guarantee that every detail is accurate or current. Confirm exam requirements, fees, and policies with the official exam sponsor.

25%

Trade Fundamentals

Core concepts for Automotive: vehicle systems, engines, safety, service basics.

25%

Tools, Materials and Processes

Standard tools, materials, and process knowledge for the trade.

20%

Safety, Hygiene and Quality

Workplace safety, hygiene, quality checks, and compliance awareness.

15%

Customer/Workplace Skills

Communication, documentation, and employability skills.

15%

Troubleshooting and Judgment

Scenario-based recognition of correct vs unsafe practice for study.

Preparing for the RBSE SS Voc Automotive Exam

What You Need to Know

Passing score: Minimum 33% marks in the subject as per RBSE examination regulations (confirm current session circulars). Where theory and practical are separate, candidates must pass each component as required by the subject scheme.
Assessment: Official RBSE mixed written theory paper (objective, short, and long constructed-response items as per subject design) with Theory 80 + Sessional 20 = 100 full marks, duration 3 hours 15 minutes. Local bank: English-language four-option MCQ study adaptation with explanations — not a full mixed-paper simulation. Subject code 101. Evidenced in official RBSE 2026 subject-wise main examination statistics.
Time limit: 3 hours 15 minutes (theory paper)
Exam / certification fees: As per RBSE annual examination fee notification for school/private candidates (Senior Secondary (Class 12) Vocational full board form fee is notified each cycle on rajeduboard.rajasthan.gov.in — confirm the current circular; subject papers are not separately priced on the statistics page) Official sources

Using Our Practice Resources

Work through all 100 available questions
Review every answer and explanation
Track weak areas and revisit them
Use our AI tutor for tough concepts

RBSE SS Voc Automotive: Suggested Study Strategy

1Start with the official unit list for code 101 and weight high-mark units first.

2Use MCQs to diagnose weak concepts, then rewrite answers in your own words.

3Complete practical/sessional work on the school timeline — MCQs do not replace it.

4Practice previous RBSE model papers when published for constructed-response timing.

5Track errors by topic and re-test those categories after 48 hours.

Frequently Asked Questions

Is the official RBSE Automotive exam multiple-choice only?

No. Official RBSE papers mix objective and constructed-response tasks; subjects with practical or skill components also require that evidence. The 100 questions here are an English-language MCQ study adaptation for concept practice only.

What is the subject code for RBSE Automotive?

RBSE lists Automotive under subject code 101 in the 2026 main examination subject-wise statistics.

What is the typical passing standard?

RBSE generally requires minimum 33% in the subject; where theory and practical are separate, candidates must meet the scheme for each component. Confirm the current session circular.

Where can I find the official syllabus?

Download board syllabus materials from rajeduboard.rajasthan.gov.in (Class 12 syllabus PDF).