Railway Engineering — Part 2 MCQs with Explanations
Practice high-yield Civil Engineering MCQs on Railway Engineering — Part 2 with worked academic solutions for PPSC SDO, FPSC AEE, C&W, Irrigation, NTS.
Questions
40
Difficulty Level
Exam-Level
Target Exams
PPSC SDO, FPSC AEE, C&W...
Estimated Time
48 mins
Exam-Level PPSC SDO FPSC AEE C&W Irrigation NTS
Verified for Commission Syllabus • Oct 14, 2026
40
Verified Practice Questions
Interactive test mode with detailed academic worked solutions
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🎉 Set complete! All 40 questions answered.
Question 1 of 40
★ PPSC SDO
★ FPSC AEE
★ PPSC SDO
★ FPSC AEE
Flange-way clearance is the distance
Correct Answer: Option A — Between the adjoining faces of the running rail and the check rail near the crossing
Detailed Academic Explanation:
Between the adjoining faces of the running rail and the check rail near the crossing is the correct answer to “Flange-way clearance is the distance”. This question is standard in competitive examination syllabi for Railway Engineering.
💡Key Conceptual Anchor:Railway Engineering
Question 2 of 40
★ PPSC SDO
★ FPSC AEE
★ PPSC SDO
★ FPSC AEE
The total gap on both sides between the inside edges of wheel flanges and gauge faces of the rail is kept as
Correct Answer: Option D — 19 mm
Detailed Academic Explanation:
19 mm is the correct answer to “The total gap on both sides between the inside edges of wheel flanges and gauge faces of the rail is kept as”. This question is standard in competitive examination syllabi for Railway Engineering.
💡Key Conceptual Anchor:Railway Engineering
Question 3 of 40
★ PPSC SDO
★ FPSC AEE
★ PPSC SDO
★ FPSC AEE
Heel divergence is
Correct Answer: Option C — Always greater than flange-way clearance
Detailed Academic Explanation:
Always greater than flange-way clearance is the correct answer to “Heel divergence is”. This question is standard in competitive examination syllabi for Railway Engineering.
💡Key Conceptual Anchor:Railway Engineering
Question 4 of 40
★ PPSC SDO
★ FPSC AEE
★ PPSC SDO
★ FPSC AEE
On a single rail track, goods trains loaded with heavy iron material run starting from ‘A’ to ‘B’ and then empty wagons run from ‘B’ to ‘A’. The amount of creep in the rails:
Correct Answer: Option B — Will be more in the direction of A to B
Detailed Academic Explanation:
Will be more in the direction of A to B is the correct answer to “On a single rail track, goods trains loaded with heavy iron material run starting from ‘A’ to ‘B’ and then empty wagons run from ‘B’ to ‘A’. The amount of creep in the rails:”. This question is standard in competitive examination syllabi for Railway Engineering.
💡Key Conceptual Anchor:Railway Engineering
Question 5 of 40
★ PPSC SDO
★ FPSC AEE
★ PPSC SDO
★ FPSC AEE
Staggered joints are generally provided
Correct Answer: Option A — On curves
Detailed Academic Explanation:
On curves is the correct answer to “Staggered joints are generally provided”. This question is standard in competitive examination syllabi for Railway Engineering.
💡Key Conceptual Anchor:Railway Engineering
Question 6 of 40
★ PPSC SDO
★ FPSC AEE
★ PPSC SDO
★ FPSC AEE
The side slope of embankments for a railway track is generally taken as
Correct Answer: Option C — 2:1
Detailed Academic Explanation:
2:1 is the correct answer to “The side slope of embankments for a railway track is generally taken as”. This question is standard in competitive examination syllabi for Railway Engineering.
💡Key Conceptual Anchor:Railway Engineering
Question 7 of 40
★ PPSC SDO
★ FPSC AEE
★ PPSC SDO
★ FPSC AEE
Loose jaws of steel trough sleepers are made of
Correct Answer: Option D — spring steel
Detailed Academic Explanation:
spring steel is the correct answer to “Loose jaws of steel trough sleepers are made of”. This question is standard in competitive examination syllabi for Railway Engineering.
💡Key Conceptual Anchor:Railway Engineering
Question 8 of 40
★ PPSC SDO
★ FPSC AEE
★ PPSC SDO
★ FPSC AEE
For a Broad Gauge route with M+7 sleeper density, number of sleepers per rail length is
Correct Answer: Option C — 20
Detailed Academic Explanation:
20 is the correct answer to “For a Broad Gauge route with M+7 sleeper density, number of sleepers per rail length is”. This question is standard in competitive examination syllabi for Railway Engineering.
💡Key Conceptual Anchor:Railway Engineering
Question 9 of 40
★ PPSC SDO
★ FPSC AEE
★ PPSC SDO
★ FPSC AEE
Which of the following types of sleepers is preferred on joints ?
Correct Answer: Option C — wooden sleeper
Detailed Academic Explanation:
wooden sleeper is the correct answer to “Which of the following types of sleepers is preferred on joints”. This question is standard in competitive examination syllabi for Railway Engineering.
💡Key Conceptual Anchor:Railway Engineering
Question 10 of 40
★ PPSC SDO
★ FPSC AEE
★ PPSC SDO
★ FPSC AEE
Vertical curves are provided where algebraic difference between grades is equal to or
Correct Answer: Option D — more than 4mm/m
Detailed Academic Explanation:
more than 4mm/m is the correct answer to “Vertical curves are provided where algebraic difference between grades is equal to or”. This question is standard in competitive examination syllabi for Railway Engineering.
💡Key Conceptual Anchor:Railway Engineering
Question 11 of 40
★ PPSC SDO
★ FPSC AEE
★ PPSC SDO
★ FPSC AEE
If $$\alpha $$ is the angle of crossing, then the number of crossings ‘N’ according to right angle method is given by
Correct Answer: Option C — $$\cot \left( \alpha \right)$$
Detailed Academic Explanation:
$$\cot \left( \alpha \right)$$ is the correct answer to “If $$\alpha $$ is the angle of crossing, then the number of crossings ‘N’ according to right angle method is given by”. This question is standard in competitive examination syllabi for Railway Engineering.
💡Key Conceptual Anchor:Railway Engineering
Question 12 of 40
★ PPSC SDO
★ FPSC AEE
★ PPSC SDO
★ FPSC AEE
Which one of the following rail failures is caused by loose fish bolts at expansion joints?
Correct Answer: Option A — crushed head
Detailed Academic Explanation:
crushed head is the correct answer to “Which one of the following rail failures is caused by loose fish bolts at expansion joints”. This question is standard in competitive examination syllabi for Railway Engineering.
💡Key Conceptual Anchor:Railway Engineering
Question 13 of 40
★ PPSC SDO
★ FPSC AEE
★ PPSC SDO
★ FPSC AEE
The main function of a fish plate is
Correct Answer: Option A — To join the two rails together
Detailed Academic Explanation:
To join the two rails together is the correct answer to “The main function of a fish plate is”. This question is standard in competitive examination syllabi for Railway Engineering.
💡Key Conceptual Anchor:Railway Engineering
Question 14 of 40
★ PPSC SDO
★ FPSC AEE
★ PPSC SDO
★ FPSC AEE
For a sleeper density of (n+5), the number of sleepers required for constructing a broad gauge railway track of length 650 m is
Correct Answer: Option C — 900
Detailed Academic Explanation:
900 is the correct answer to “For a sleeper density of (n+5), the number of sleepers required for constructing a broad gauge railway track of length 650 m is”. This question is standard in competitive examination syllabi for Railway Engineering.
💡Key Conceptual Anchor:Railway Engineering
Question 15 of 40
★ PPSC SDO
★ FPSC AEE
★ PPSC SDO
★ FPSC AEE
A train is hauled by 2-8-2 locomotive with 22.5 tonnes and on each driving axle. Assuming the coefficient of rail-wheel friction to be 0.25, what would be the hauling capacity of the locomotive?
Correct Answer: Option B — 22.5 tonnes
Detailed Academic Explanation:
22.5 tonnes is the correct answer to “A train is hauled by 2-8-2 locomotive with 22.5 tonnes and on each driving axle. Assuming the coefficient of rail-wheel friction to be 0.25, what would be the hauling capacity of the locomotive”. This question is standard in competitive examination syllabi for Railway Engineering.
💡Key Conceptual Anchor:Railway Engineering
Question 16 of 40
★ PPSC SDO
★ FPSC AEE
★ PPSC SDO
★ FPSC AEE
The limiting value of cant gradient for all gauges is
Correct Answer: Option B — 1 in 720
Detailed Academic Explanation:
1 in 720 is the correct answer to “The limiting value of cant gradient for all gauges is”. This question is standard in competitive examination syllabi for Railway Engineering.
💡Key Conceptual Anchor:Railway Engineering
Question 17 of 40
★ PPSC SDO
★ FPSC AEE
★ PPSC SDO
★ FPSC AEE
The correct relation between curve lead (CL), switch lead (SL) and lead of crosssing (L) is given by
Correct Answer: Option B — L = CL - SL
Detailed Academic Explanation:
L = CL - SL is the correct answer to “The correct relation between curve lead (CL), switch lead (SL) and lead of crosssing (L) is given by”. This question is standard in competitive examination syllabi for Railway Engineering.
💡Key Conceptual Anchor:Railway Engineering
Question 18 of 40
★ PPSC SDO
★ FPSC AEE
★ PPSC SDO
★ FPSC AEE
The object of providing a point lock is
Correct Answer: Option A — to ensure that each switch is correctly set
Detailed Academic Explanation:
to ensure that each switch is correctly set is the correct answer to “The object of providing a point lock is”. This question is standard in competitive examination syllabi for Railway Engineering.
💡Key Conceptual Anchor:Railway Engineering
Question 19 of 40
★ PPSC SDO
★ FPSC AEE
★ PPSC SDO
★ FPSC AEE
Flat mild steel bearing plates are used
Correct Answer: Option A — For points and crossings in the lead portion
Detailed Academic Explanation:
For points and crossings in the lead portion is the correct answer to “Flat mild steel bearing plates are used”. This question is standard in competitive examination syllabi for Railway Engineering.
💡Key Conceptual Anchor:Railway Engineering
Question 20 of 40
★ PPSC SDO
★ FPSC AEE
★ PPSC SDO
★ FPSC AEE
The height of the rail for 52 kg rail section is
Correct Answer: Option B — 156 mm
Detailed Academic Explanation:
156 mm is the correct answer to “The height of the rail for 52 kg rail section is”. This question is standard in competitive examination syllabi for Railway Engineering.
💡Key Conceptual Anchor:Railway Engineering
Question 21 of 40
★ PPSC SDO
★ FPSC AEE
★ PPSC SDO
★ FPSC AEE
Head width of 52 kg rail section is
Correct Answer: Option C — 67 mm
Detailed Academic Explanation:
67 mm is the correct answer to “Head width of 52 kg rail section is”. This question is standard in competitive examination syllabi for Railway Engineering.
💡Key Conceptual Anchor:Railway Engineering
Question 22 of 40
★ PPSC SDO
★ FPSC AEE
★ PPSC SDO
★ FPSC AEE
Largest percentage of material in the rail is in its
Correct Answer: Option A — head
Detailed Academic Explanation:
head is the correct answer to “Largest percentage of material in the rail is in its”. This question is standard in competitive examination syllabi for Railway Engineering.
💡Key Conceptual Anchor:Railway Engineering
Question 23 of 40
★ PPSC SDO
★ FPSC AEE
★ PPSC SDO
★ FPSC AEE
A train is hauled by 4-8-2 locomotive. The number of driving wheels in this locomotive is
Correct Answer: Option B — 8
Detailed Academic Explanation:
8 is the correct answer to “A train is hauled by 4-8-2 locomotive. The number of driving wheels in this locomotive is”. This question is standard in competitive examination syllabi for Railway Engineering.
💡Key Conceptual Anchor:Railway Engineering
Question 24 of 40
★ PPSC SDO
★ FPSC AEE
★ PPSC SDO
★ FPSC AEE
For developing thinly populated areas, the correct choice of gauge is
Correct Answer: Option C — Narrow Gauge
Detailed Academic Explanation:
Narrow Gauge is the correct answer to “For developing thinly populated areas, the correct choice of gauge is”. This question is standard in competitive examination syllabi for Railway Engineering.
💡Key Conceptual Anchor:Railway Engineering
Question 25 of 40
★ PPSC SDO
★ FPSC AEE
★ PPSC SDO
★ FPSC AEE
The slipping of driving wheels of locomotives on the rail surface causes
Correct Answer: Option A — wheel burns
Detailed Academic Explanation:
wheel burns is the correct answer to “The slipping of driving wheels of locomotives on the rail surface causes”. This question is standard in competitive examination syllabi for Railway Engineering.
💡Key Conceptual Anchor:Railway Engineering
Question 26 of 40
★ PPSC SDO
★ FPSC AEE
★ PPSC SDO
★ FPSC AEE
Wear of rails is maximum in weight of
Correct Answer: Option B — sharp curve
Detailed Academic Explanation:
sharp curve is the correct answer to “Wear of rails is maximum in weight of”. This question is standard in competitive examination syllabi for Railway Engineering.
💡Key Conceptual Anchor:Railway Engineering
Question 27 of 40
★ PPSC SDO
★ FPSC AEE
★ PPSC SDO
★ FPSC AEE
At points and crossings, the total number of sleepers for 1 in 12 turnouts in Broad Gauge is
Correct Answer: Option C — 70
Detailed Academic Explanation:
70 is the correct answer to “At points and crossings, the total number of sleepers for 1 in 12 turnouts in Broad Gauge is”. This question is standard in competitive examination syllabi for Railway Engineering.
💡Key Conceptual Anchor:Railway Engineering
Question 28 of 40
★ PPSC SDO
★ FPSC AEE
★ PPSC SDO
★ FPSC AEE
For a 8° curve track diverging from a main curve of 5° in an opposite direction in the layout of a broad gauge yard, the cant to be provided for the branch track for maximum speed of 45 km/h on the main line and ‘G’ = 1.676 m is (Permitted cant deficiency for the main line = 7.6 cm)
Correct Answer: Option B — -0.168 cm
Detailed Academic Explanation:
-0.168 cm is the correct answer to “For a 8° curve track diverging from a main curve of 5° in an opposite direction in the layout of a broad gauge yard, the cant to be provided for the branch track for maximum speed of 45 km/h on the main line and ‘G’ = 1.676 m is (Permitted cant deficiency for the main line = 7.6 cm)”. This question is standard in competitive examination syllabi for Railway Engineering.
💡Key Conceptual Anchor:Railway Engineering
Question 29 of 40
★ PPSC SDO
★ FPSC AEE
★ PPSC SDO
★ FPSC AEE
Normally maximum cant permissible in Meter Gauge is
Correct Answer: Option B — 90 mm
Detailed Academic Explanation:
90 mm is the correct answer to “Normally maximum cant permissible in Meter Gauge is”. This question is standard in competitive examination syllabi for Railway Engineering.
💡Key Conceptual Anchor:Railway Engineering
Question 30 of 40
★ PPSC SDO
★ FPSC AEE
★ PPSC SDO
★ FPSC AEE
Which of the following turnouts is most commonly used for goods train on Indian Railways?
Correct Answer: Option A — 1 in 8.5
Detailed Academic Explanation:
1 in 8.5 is the correct answer to “Which of the following turnouts is most commonly used for goods train on Indian Railways”. This question is standard in competitive examination syllabi for Railway Engineering.
💡Key Conceptual Anchor:Railway Engineering
Question 31 of 40
★ PPSC SDO
★ FPSC AEE
★ PPSC SDO
★ FPSC AEE
When semaphore and warner are installed on the same post, then the stop indication is given when
Correct Answer: Option A — both arms are horizontal
Detailed Academic Explanation:
both arms are horizontal is the correct answer to “When semaphore and warner are installed on the same post, then the stop indication is given when”. This question is standard in competitive examination syllabi for Railway Engineering.
💡Key Conceptual Anchor:Railway Engineering
Question 32 of 40
★ PPSC SDO
★ FPSC AEE
★ PPSC SDO
★ FPSC AEE
Which of the following devices is used to transfer the wagons or locomotives to and from parallel tracks without any necessity of shunting ?
Correct Answer: Option C — traverser
Detailed Academic Explanation:
traverser is the correct answer to “Which of the following devices is used to transfer the wagons or locomotives to and from parallel tracks without any necessity of shunting”. This question is standard in competitive examination syllabi for Railway Engineering.
💡Key Conceptual Anchor:Railway Engineering
Question 33 of 40
★ PPSC SDO
★ FPSC AEE
★ PPSC SDO
★ FPSC AEE
Dog spikes are used for fixing rail to the
Correct Answer: Option A — wooden sleepers
Detailed Academic Explanation:
wooden sleepers is the correct answer to “Dog spikes are used for fixing rail to the”. This question is standard in competitive examination syllabi for Railway Engineering.
💡Key Conceptual Anchor:Railway Engineering
Question 34 of 40
★ PPSC SDO
★ FPSC AEE
★ PPSC SDO
★ FPSC AEE
Consider the following surveys i) Reconnaissance survey ii) Preliminary survey iii) Traffic survey iv) Location survey The correct sequence in which these surveys are conducted before the alignment of a track is finalised is
Correct Answer: Option D — iii, i, ii, iv
Detailed Academic Explanation:
iii, i, ii, iv is the correct answer to “Consider the following surveys i) Reconnaissance survey ii) Preliminary survey iii) Traffic survey iv) Location survey The correct sequence in which these surveys are conducted before the alignment of a track is finalised is”. This question is standard in competitive examination syllabi for Railway Engineering.
💡Key Conceptual Anchor:Railway Engineering
Question 35 of 40
★ PPSC SDO
★ FPSC AEE
★ PPSC SDO
★ FPSC AEE
Minimum depth of ballast cushion for a Broad Gauge wooden sleeper of size 275x25x13 cm with 75cm sleeper spacing is
Correct Answer: Option C — 25 cm
Detailed Academic Explanation:
25 cm is the correct answer to “Minimum depth of ballast cushion for a Broad Gauge wooden sleeper of size 275x25x13 cm with 75cm sleeper spacing is”. This question is standard in competitive examination syllabi for Railway Engineering.
💡Key Conceptual Anchor:Railway Engineering
Question 36 of 40
★ PPSC SDO
★ FPSC AEE
★ PPSC SDO
★ FPSC AEE
Number of dog spikes normally used per rail seat on curved track is
Correct Answer: Option B — two outside and one inside
Detailed Academic Explanation:
two outside and one inside is the correct answer to “Number of dog spikes normally used per rail seat on curved track is”. This question is standard in competitive examination syllabi for Railway Engineering.
💡Key Conceptual Anchor:Railway Engineering
Question 37 of 40
★ PPSC SDO
★ FPSC AEE
★ PPSC SDO
★ FPSC AEE
The formation width for a single line meter gauge track in embankment as adopted on Indian Railways is
Correct Answer: Option B — 4.88 m
Detailed Academic Explanation:
4.88 m is the correct answer to “The formation width for a single line meter gauge track in embankment as adopted on Indian Railways is”. This question is standard in competitive examination syllabi for Railway Engineering.
💡Key Conceptual Anchor:Railway Engineering
Question 38 of 40
★ PPSC SDO
★ FPSC AEE
★ PPSC SDO
★ FPSC AEE
The formation width for a double line Broad Gauge track in cutting (excluding drains) as adopted on Indian Railways is
Correct Answer: Option C — 10.21m
Detailed Academic Explanation:
10.21m is the correct answer to “The formation width for a double line Broad Gauge track in cutting (excluding drains) as adopted on Indian Railways is”. This question is standard in competitive examination syllabi for Railway Engineering.
💡Key Conceptual Anchor:Railway Engineering
Question 39 of 40
★ PPSC SDO
★ FPSC AEE
★ PPSC SDO
★ FPSC AEE
The shape of transition curve used by Indian Railways is
Correct Answer: Option A — cubic parabola
Detailed Academic Explanation:
cubic parabola is the correct answer to “The shape of transition curve used by Indian Railways is”. This question is standard in competitive examination syllabi for Railway Engineering.
💡Key Conceptual Anchor:Railway Engineering
Question 40 of 40
★ PPSC SDO
★ FPSC AEE
★ PPSC SDO
★ FPSC AEE
If ‘A’ is the angle formed by two gauge faces, the crossing number will be
Correct Answer: Option B — cot A
Detailed Academic Explanation:
cot A is the correct answer to “If ‘A’ is the angle formed by two gauge faces, the crossing number will be”. This question is standard in competitive examination syllabi for Railway Engineering.
💡Key Conceptual Anchor:Railway Engineering
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Airport Engineering — Part 1
Master the next curriculum module with 40 exam-standard MCQs.
In competitive commission exams (FPSC, PPSC, KPPSC, SPSC, CSS, PMS), questions are frequently phrased with distractor options designed to catch rote learners. Whenever you answer an MCQ, read the Detailed Academic Explanation and Conceptual Anchor to understand why the remaining options are incorrect.