Junior Engineer • Paper-II
A timber beam rectangular section is simply supported at the ends and carries a concentrated load at mid span. The maximum longitudinal stress is 16N/mm2 and the maximum shear stress is 2.5N/mm2. The ratio of span to depth would be
A)
10
B)
4
C)
6
D)
3.2
Based on established principles in Mechanical Engineering, the correct and most appropriate choice is '3.2' (Option D).
Junior Engineer • Paper-II
Setting time of cement increases by addition of
A)
Gypsum
B)
Calcium chloride
C)
Sodium oxide
D)
Calcium sulphate
Based on established principles in Civil Engineering, the correct and most appropriate choice is 'Calcium sulphate' (Option D).
Junior Engineer • Paper-II
Perambulator is used to measure the
A)
Distance
B)
Speed
C)
Pressure
D)
Weight
A perambulator (measuring wheel) is used to measure distance, especially along roads or survey lines, by counting the number of wheel revolutions and converting them into length. Speed is measured by a speedometer or similar device, pressure by a manometer or pressure gauge, and weight by a weighing scale or balance.
Junior Engineer • Paper-II
Chute spillway is used in control a drop of
A)
0-3m
B)
1-4m
C)
2-4m
D)
3-6m
A chute spillway (also called a trough spillway) is generally adopted for moderate drops, typically about 3 to 6 m. It conveys water down a steep open channel to the downstream side, so it is suitable when the drop is not very small and not excessively large. Hence option d is correct.
Why the others are incorrect:
- a (0–3 m): This range is too small for the usual application of a chute spillway.
- b (1–4 m): Partly overlaps, but the standard textbook range is more specifically 3–6 m.
- c (2–4 m): Also overlaps, but it does not match the commonly accepted range as well as option d.
Junior Engineer • Paper-II
A chute spillway with box type inlet consists of
A)
SAF stilling basin
B)
Ogee type inlet
C)
Apron
D)
None of these
A chute spillway with a box-type inlet is typically provided with an ogee-shaped inlet crest to smoothly pass flow from the reservoir into the chute. Hence, the correct option is (b) Ogee type inlet. Option (a) SAF stilling basin is a downstream energy-dissipation structure, not an inlet. Option (c) Apron is also a downstream floor/protection element, not the inlet type. Therefore, (d) None of these is incorrect.
Junior Engineer • Paper-II
Percentage shrinkage allowance provided on moulds for brick manufacture is
A)
2-6%
B)
8-12%
C)
32-24%
D)
8-14 %
Based on established principles in Civil Engineering, the correct and most appropriate choice is '32-24%' (Option C).
Junior Engineer • Paper-II
Find the correct answer for the sequence: 1, 1, 2, 6, 24, 96, 720
A)
6
B)
2
C)
96
D)
720
The sequence follows a factorial pattern with an extra multiplication by 4 at the 6th term: 1 = 1!, 1 = 1!, 2 = 2!, 6 = 3!, 24 = 4!, 96 = 4! × 4, and 720 = 6!. Among the given options, 96 is the term that fits the intended sequence pattern. The other options are not the correct next/target term in the pattern: 2 and 6 are earlier factorial terms, while 720 is a later factorial term.
Junior Engineer • Paper-II
The available net positive suction head of a pump depends on
A)
The suction lift
B)
Friction loss
C)
Vapour pressure
D)
All of these
The available Net Positive Suction Head (NPSH) of a pump is the suction head available at the pump inlet above the liquid vapour pressure head. It depends on the suction conditions, including the suction lift, friction losses in the suction pipe, and the vapour pressure of the liquid. Hence, all of these affect available NPSH.
Why the other options are not correct alone:
- Vapour pressure: important, but not the only factor.
- The suction lift: important, but not the only factor.
- Friction loss: important, but not the only factor.
Therefore, the correct answer is all of these.
Junior Engineer • Paper-II
To obtain cement dry powder, lime stone and shales or their slurry, is burnt in a rotary kiln at a temperature between
A)
1100o and 1200o
B)
1300o and 1400o
C)
1200o and 1300o
D)
1400o and 1500o
Based on established principles in Civil Engineering, the correct and most appropriate choice is '1200o and 1300o' (Option C).
Junior Engineer • Paper-II
In a biaxial stress problem, the stresses in x and y-directions are sx = 200MPa and sy = 100MPa. The Maximum principal stress in MPa is
A)
50
B)
100
C)
150
D)
200
Based on established principles in Mechanical Engineering, the correct and most appropriate choice is '200' (Option D).
Junior Engineer • Paper-II
In a centrifugal pump, if the speed is increased from 1750 rpm to 2000rpm, the head will change from 50m to
A)
38.3m
B)
65.3m
C)
56.3m
D)
100m
Based on established principles in Mechanical Engineering, the correct and most appropriate choice is '100m' (Option D).
Junior Engineer • Paper-II
The state of two-dimensional stresses acting on a concrete lamina consists of a direct tensile stress 1.5N/mm2 and shear stress 1.20N/mm2, which cause cracking of concrete. Then, the tensile strength of the concrete in N/mm2 is
A)
1.50
B)
2.08
C)
2.17
D)
2.29
Based on established principles in Mechanical Engineering, the correct and most appropriate choice is '2.29' (Option D).
Junior Engineer • Paper-II
A 24hr 10 year recurrence interval storm results in 0.5m depth of water behind the contour bund constructed on loamy sand soil having slope of 2%. The base width of the bund is
A)
3.75m
B)
3.25m
C)
3.50m
D)
3.00m
For a contour bund, the base width is obtained from the side slopes and the depth of water stored behind the bund. For loamy sand on a 2% slope, the standard design side slopes give a base width of about 3.5 m for a stored water depth of 0.5 m. Hence, option (c) 3.50 m is correct.
Why the others are incorrect:
- (a) 3.75 m is too large for the given 0.5 m water depth and standard contour bund geometry.
- (b) 3.25 m is too small and would not provide the required section for the stated storage condition.
- (d) 3.00 m is also too small and would understate the bund base width for loamy sand at 2% slope.
Therefore, the correct answer is (c) 3.50 m.
Junior Engineer • Paper-II
The high strength of rapid hardening cement at early stage, is due to its
A)
Finer grinding
B)
Burning at high temperature
C)
Increased lime cement
D)
High content of tricalcium
Based on established principles in Civil Engineering, the correct and most appropriate choice is 'Burning at high temperature' (Option B).
Junior Engineer • Paper-II
Hydraulic jump takes place when the flow enters from
A)
Critical state to super critical state
B)
Super critical to sub critical state
C)
Subcritical state to super critical state
D)
Uniform flow to non-uniform flow
Based on established principles in Mechanical Engineering, the correct and most appropriate choice is 'Critical state to super critical state' (Option A).
Junior Engineer • Paper-II
The horizontal angle between the true meridian and a line is called
A)
True bearing
B)
Magnetic bearing
C)
Arbitrary bearing
D)
Angle
The horizontal angle measured between the true meridian (true north-south line) and a survey line is called the true bearing. It is the standard bearing referenced to the geographic meridian.
Why others are incorrect:
- Magnetic bearing: measured with respect to the magnetic meridian, not the true meridian.
- Arbitrary bearing: measured from any assumed reference line, not the true meridian.
- Angle: too general; it does not specify the surveying term for the angle from the true meridian.
Junior Engineer • Paper-II
Silica contain in brick clay should be at the range of
A)
10-20 %
B)
40-50 %
C)
30-40 %
D)
50-60 %
Based on established principles in Civil Engineering, the correct and most appropriate choice is '30-40 %' (Option C).
Junior Engineer • Paper-II
Addition pozzolana to ordinary port land cement causes
A)
Decrease in early strength
B)
Reduction in chemical action with sulphates
C)
Increase in shrinkage
D)
All of these
Based on established principles in Civil Engineering, the correct and most appropriate choice is 'All of these' (Option D).
Junior Engineer • Paper-II
Find the odd man out: 8, 27, 64, 100, 125, 216, 343
A)
343
B)
27
C)
100
D)
125
Based on established principles in the relevant subject area, the correct and most appropriate choice is '125' (Option D).
Junior Engineer • Paper-II
Find the correct answer for the sequence: 8, 7, 11, 12, 14, 17, 17, 22, (....)
A)
27
B)
24
C)
22
D)
20
Based on established principles in the relevant subject area, the correct and most appropriate choice is '22' (Option C).
Junior Engineer • Paper-II
Fixed reference point of known elevation is called as
A)
Bench mark
B)
Change point
C)
Turning point
D)
Reduce level
Based on established principles in Civil Engineering, the correct and most appropriate choice is 'Change point' (Option B).
Junior Engineer • Paper-II
Today is Monday, after 61 days it will be?
A)
Thursday
B)
Tuesday
C)
Wednesday
D)
Saturday
Based on established principles in the relevant subject area, the correct and most appropriate choice is 'Wednesday' (Option C).
Junior Engineer • Paper-II
The minimum percentage of chemical ingredient of cement is that of
A)
Magnesium oxide
B)
Iron oxide
C)
Silica
D)
Alumina
Based on established principles in Civil Engineering, the correct and most appropriate choice is 'Silica' (Option C).
Junior Engineer • Paper-II
If the impeller speed of a centrifugal pump is doubled, the power consumption will be
A)
The same
B)
Doubled
C)
Four times
D)
Eight times
Based on established principles in Mechanical Engineering, the correct and most appropriate choice is 'Doubled' (Option B).
Junior Engineer • Paper-II
Give the designation to the scale 1/1000
A)
1cm = 10m
B)
1cm = 100mm
C)
1cm = 100m
D)
1cm = 100cm
Based on established principles in Civil Engineering, the correct and most appropriate choice is '1cm = 10m' (Option A).
