Railway-RRB ALP 2025 CBT 2 Millwright Mechanic Machine Tool Previous Year Question Paper and Answer Key Free PDF Download English
रेल भर्ती बोर्ड / RAILWAY RECRUITMENT BOARDS
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Recruitment of Assistant Loco Pilot (ALP)
CBT Stage-2 | Millwright Mechanic (Machine Tool Maintenance) | Question Paper with Answer Key
Test Date: 28/07/2026 | Test Time: 9:30 AM – 12:00 PM | Shift-1
Note: Correct Answer = 1 mark | Incorrect = −1/3 mark. Bold ✓ indicates official correct option.
PART-A (Common Section)
Questions 1 – 100 (Detailed selection + Key)
Q.1 A car travels on a highway, and its odometer records a reading of 180 km at 8:00 am and 240 km at 9:30 am. Based on this information, which statement best describes the car's average speed during this interval?
A. The car's average speed is 40 km per hour as calculated from the odometer readings and time interval. ✓
B. The car's average speed is 60 km per hour based only on the change in odometer readings.
C. The car's average speed is 240 km per hour since that was the odometer reading at 9:30 am.
D. The car's average speed is 180 km per hour since that was the odometer reading at 8:00 am.
Correct Answer: A
Q.2 Find the LCM of 72, 78, and 90.
A. 4680 ✓
B. 4280
C. 4120
D. 4250
Correct Answer: A
Q.3 P, Q, R, S and T have different ages. T is elder than only one person. S is elder than P but younger than Q. R is elder than Q. Who is the youngest?
A. R
B. P ✓
C. Q
D. S
Correct Answer: B
Q.4 An engineer uses fault tree analysis to assess a machine-related injury in a factory. Which step should be taken first according to standard procedure?
A. Define the top event representing the injury ✓
B. List all possible causes of failures
C. Validate the analysis using workplace data
D. Establish preventive measures to control risks
Correct Answer: A
Q.5 What should come in place of the question mark (?) in the given series? 74, 83, 101, 128, ?, 209
A. 155
B. 176
C. 164 ✓
D. 146
Correct Answer: C
Q.6 Which of the following statements correctly describes average velocity and its SI unit?
A. Average velocity is the total distance divided by total time, and its unit is kilometer per hour.
B. Average velocity is the total distance divided by total time, and its unit is meter per second.
C. Average velocity is the total displacement divided by total time, and its unit is meter per second. ✓
D. Average velocity is the total displacement divided by total time, and its unit is kilometer per hour.
Correct Answer: C
Q.7 What is an email used for?
A. Data processing
B. File storage
C. Creating documents
D. Sending messages ✓
Correct Answer: D
Q.8 Which of the following best describes a key environmental concern associated with improper disposal of e-waste?
A. Release of greenhouse gases from decomposition
B. Enhanced biodegradation of plastics
C. Release of toxic metals into soil and water ✓
D. Increased recycling rates of precious metals
Correct Answer: C
Q.9 Among five people – A, B, C, D, and E – who is the tallest? (I) A is taller than B. B is taller than C. (II) D is taller than E.
A. Both statements I and II together are NOT sufficient to answer the question. ✓
B. Data in statement II alone is sufficient while I is not
C. Both statements together are sufficient (not alone)
D. Data in statement I alone is sufficient while II is not
Correct Answer: A
Q.10 A train X crosses a man who is sitting in another train Y, which is moving in the opposite direction, in 8 seconds. However, when both trains are moving in the same direction, train X takes 20 seconds to pass the man. If the length of train X is 360 meters and the length of train Y is 240 meters, what is the speed of train Y?
A. 48.6 km/h ✓
B. 45.8 km/h
C. 46.5 km/h
D. 45.3 km/h
Correct Answer: A
Q.11 A roller coaster at the top of its track has maximum potential energy. As it descends and speeds up, what principle explains why the sum of its kinetic and potential energies remains constant if we ignore friction and air resistance?
A. Law of inertia
B. Principle of superposition
C. Law of conservation of energy ✓
D. Principle of inertia
Correct Answer: C
Quick Answer Key – Remaining Part-A
Remaining Part-A questions follow the official answer key pattern (common section).
PART-B (Millwright Mechanic – Machine Tool Maintenance)
Pipe threading, Milling, Flat belt, Safety goggles, Gears, Cutting tools, Tolerance etc.
Q.1 What needs to be checked when a threaded pipe connection becomes loose after cutting?
A. Type of tap used
B. Die adjustment setting ✓
C. Cutting speed applied
D. Amount of lubricant used
Correct Answer: B
Q.2 Which type of operation is most commonly performed on a vertical milling machine?
A. Face milling of flat surfaces ✓
B. Slot milling with side cutters
C. Angular milling with swivelling head
D. End milling of narrow profiles
Correct Answer: A
Q.3 Which specification parameter is most critical for ensuring a flat belt fits properly on pulleys in a power transmission system?
A. The material of the belt
B. The thickness of the belt
C. The pitch length of the belt ✓
D. The width of the belt
Correct Answer: C
Q.4 In a mechanical workshop, what is the main purpose of wearing safety goggles while operating grinding machines?
A. To prevent hearing loss from loud equipment
B. To reduce inhalation of dust particles
C. To protect the eyes from flying debris and sparks ✓
D. To avoid electric shock from faulty wiring
Correct Answer: C
Q.5 A maintenance engineer observes that the input and output shafts in a gearbox are neither parallel nor intersecting and there is a need for smooth, quiet operation under high loads. Which gear arrangement is most suitable in this context?
A. Hypoid gear ✓
B. Spiral bevel gear
C. Helical gear
D. Worm gear
Correct Answer: A
Q.6 Which cutting tool material is most appropriate for high-speed CNC machining of hard metals?
A. Cast iron
B. Cemented carbide ✓
C. High-speed steel
D. Tool steel
Correct Answer: B
Additional Key Millwright / Machine Tool Maintenance Questions:
Q.7 The main purpose of lubrication in machine tools is to:
A. Increase friction
B. Reduce friction and wear between moving parts ✓
C. Increase noise
D. Cool the operator
Correct Answer: B
Q.8 In a lathe machine, the tailstock is used for:
A. Holding the cutting tool
B. Supporting the free end of long workpieces and for drilling operations ✓
C. Changing the spindle speed
D. Feeding the tool automatically
Correct Answer: B
Q.9 Which instrument is commonly used to check the alignment of machine tool beds and surfaces?
A. Vernier caliper only
B. Spirit level / Precision level and straight edge ✓
C. Micrometer only
D. Dial test indicator alone without reference
Correct Answer: B
Q.10 The least count of a metric micrometer is generally:
A. 0.01 mm ✓
B. 0.02 mm
C. 0.05 mm
D. 0.1 mm
Correct Answer: A
Q.11 In limit system, the difference between maximum and minimum limits of size is known as:
A. Allowance
B. Tolerance ✓
C. Deviation
D. Fit
Correct Answer: B
Q.12 Which of the following is a multi-point cutting tool?
A. Single point turning tool
B. Milling cutter ✓
C. Shaper tool
D. Planer tool
Correct Answer: B
Q.13 The process of removing a very small amount of material to obtain a smooth and accurate surface is called:
A. Chipping
B. Filing
C. Scraping ✓
D. Drilling
Correct Answer: C
Q.14 Safety while working on machine tools primarily requires:
A. Wearing loose clothing
B. Proper guarding of moving parts and use of PPE ✓
C. Working without supervision
D. Ignoring warning signs
Correct Answer: B
— End of Document —
Prepared from official RRB ALP Stage-2 CBT-2 Millwright Mechanic (Machine Tool Maintenance) (28 July 2026, Shift-1) question paper & answer key.
Correct options marked with bold ✓.
RRB ALP 2025 CBT 2 Millwright Mechanic Machine Tool Question Paper and Answer Key PDF English
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