RRB ALP Heat Engine Exam Pattern & Question Types (With Examples)

Understanding the Heat Engine exam pattern is essential for scoring well in the RRB ALP CBT-2 Part B Relevant Trade paper. This section explains the marks distribution, question style, difficulty level, and includes realistic sample questions to help you prepare smarter.

1. RRB ALP Heat Engine Exam Pattern (CBT-2 Part B)

2. Topic-Wise Question Distribution 

This is based on analysis of ITI pattern + previous ALP trade papers:

➡️ Most questions come from IC Engines + Welding + Fitting.

3. Types of Questions Asked in Heat Engine

RRB usually asks conceptual + application-based questions.
Questions are not numerical-heavy, but revolve around:

✔ Working principles
✔ Identification of parts
✔ Differences/advantages
✔ Diagrams (theoretical questions)
✔ Safety and operational basics

Below are realistic exam-oriented examples.

4. Sample Questions – Topic Wise

A. IC Engine (Most Important – 20+ Marks)

1️⃣ Which stroke in a four-stroke petrol engine is responsible for producing power?
A) Suction
B) Compression
C) Power
D) Exhaust
✔ Answer: C

2️⃣ Which engine component converts reciprocating motion into rotary motion?
A) Piston
B) Crankshaft
C) Camshaft
D) Connecting rod
✔ Answer: B

3️⃣ Diesel engine uses which ignition system?
A) Spark plug
B) Glow plug
C) Fuel injector + Compression ignition
D) Magneto ignition
✔ Answer: C

B. Welding (8–10 Questions)

1️⃣ Arc welding uses which type of current?
A) AC
B) DC
C) Both AC & DC
D) None
✔ Answer: C

2️⃣ A common welding defect caused by insufficient heat is:
A) Porosity
B) Undercut
C) Lack of fusion
D) Crack
✔ Answer: C

C. Fitting (8–10 Questions)

1️⃣ Vernier caliper least count is typically:
A) 0.02 mm
B) 0.01 mm
C) 0.1 mm
D) 0.2 mm
✔ Answer: A

2️⃣ Which tool is used for marking parallel lines?
A) Scriber
B) Try square
C) Divider
D) Surface gauge
✔ Answer: D

D. Basic Electricity (6–8 Questions)

1️⃣ Ohm’s Law is expressed as:
A) V = IR
B) P = VI
C) R = V/I
D) V = I/R
✔ Answer: A

2️⃣ A series circuit has:
A) Same current everywhere
B) Same voltage everywhere
C) Different current at each load
D) No resistance
✔ Answer: A

E. Transmission System (4–5 Questions)

1️⃣ The component that transfers power from the gearbox to the wheels is:
A) Differential
B) Clutch
C) Propeller shaft
D) Flywheel
✔ Answer: C

5. Difficulty Level Analysis

6. How to Prepare for RRB ALP Heat Engine (Expert Strategy)

Step 1 — Start with IC Engine (biggest weightage)

• Understand four-stroke & two-stroke cycles

• Study diagrams & valve timing

• Compare petrol vs diesel engines

Step 2 — Strengthen basics of Welding & Fitting

• Most questions are theory-based

• Read ITI manuals (Automobile / Fitter trades)

Step 3 — Practice Measurement Tools

• Focus on least count, accuracy, errors

• Expect 4–5 easy questions here

Step 4 — Master Basic Electricity

• Ohm’s law

• Series & parallel circuits

• Power calculations

Step 5 — Do mock tests weekly

• Practice improves speed

• Helps understand question patterns

7. Smart Tips for Quick Revision

✔ Make short notes of engine parts & cycles
✔ Memorize standard tool dimensions (e.g., least count)
✔ Review welding defects & safety measures
✔ Practice 200+ trade questions before exam
✔ Avoid guesswork — negative marking applies

Final thoughts– What to Expect in the Actual Exam

The Heat Engine section is scoring if you understand concepts and practice the ITI-level questions. Expect:

• 75 objective questions

• Mostly conceptual and application-based

• Higher weightage for IC engines

• Manageable difficulty

• No advanced calculations needed

If you follow a structured preparation plan, scoring 50+ out of 75 is absolutely achievable.