**SSC Junior Engineer Exam Paper – 2018 “held on 27 January 2018” Morning Shift (Civil Engineering)**

**Q1:-** Which of the following statement is CORRECT about the rocks and minerals?

**Options:
**

**1)**Shale and mica are metamorphic rocks.

**2)**Quartz is igneous rock.

**3)**Quartz is metamorphic rock.

**4)**Quartz and mica are only minerals

**Answer:**Quartz and mica are only minerals

**Q2:-** Which of the following possess more ability to resist ﬁre?

**Options:
**

**1)**Compact sandstone

**2)**Quartz

**3)**Red marble

**4)**Shale

**Answer:**Compact sandstone

**Q3:-** The strength of any timber is highest in direction of_____.

**Options:
**

**1)**an angle of 60 degree to grains

**2)**an angle of 0 degree to grains

**3)**an angle of 90 degree to grains

**4)**an angle of 120 degree to grains

**Answer:**an angle of 0 degree to grains

**Q4:-** Which of the following represents the moisture content in the properly-seasoned timber?

**Options:
**

**1)**5% to 8%

**2)**10% to 12%

**3)**18% to 25%

**4)**25% to 35%

**Answer:**10% to 12%

**Q5:-** In the air drying process, the practical limit of moisture content is______.

**Options:
**

**1)**0.05

**2)**0.15

**3)**0.25

**4)**0.35

**Answer:**0.15

**Q6:-** Which of the following represents the average life (years) of the high durable timber?

**Options:
**

**1)**Less than 3

**2)**3 to 6

**3)**6 to 10

**4)**More than 10

**Answer:**More than 10

**Q7:-** Which of the following is the most important characteristic of the alumina in the brick earth?

**Options:
**

**1)**Maintain plasticity

**2)**Increase strength of bricks

**3)**To manufacture impermeable bricks

**4)**Reduce wrapping when heated

**Answer:**Maintain plasticity

**Q8:-** The target mean strength of the M20 grade concrete is 27 N/mm^{2}. What is the value of standard deviation?

**Options:
**

**1)**2.01

**2)**3.5

**3)**4.24

**4)**5

**Answer:**4.24

**Q9:-** Which of the following property of ordinary Portland cement is improved by the pozzolana?

**Options:
**

**1)**Bleeding

**2)**Heat of hydration

**3)**Permeability

**4)**Shrinkage

**Answer:**Shrinkage

**Q10:-** Which of the following represents the normal consistency of ordinary Portland cement?

**Options:
**

**1)**0.15

**2)**0.3

**3)**0.45

**4)**0.55

**Answer:**0.3

**Q11:-** What percentage of the cost of the estimate is provided for the tools and plants?

**Options:
**

**1)**0.02

**2)**0.05

**3)**0.1

**4)**0.15

**Answer:**0.02

**Q12 –** What is the thickness (cm) of a two brick wall made up of standard modular brick?

**Options:
**

**1)**9

**2)**10

**3)**20

**4)**40

**Answer:**40

**Q13 –** The expected out turn (cubic metre) of reinforced brickwork per mason per day is_____.

**Options:
**

**1)**1

**2)**3

**3)**5

**4)**10

**Answer:**1

**Q14:-** A canal bank has a length of 100 m and its height at two extreme ends is 2 m and 3 m respectively. The side slope of the bank is 2 : 1. The rate of pitching is Rs. 500 per square metres. Calculate the cost (Rs.) of pitching of the area of the side slope.

**Options:
**

**1)**1,50,000

**2)**1,67,500

**3)**1,76,500

**4)**1,88,000

**Answer:**1,67,500

**Q15:-** Calculate the volume (cubic metre) of the dry mortar required for 1 cubic metre brick work.

**Options:
**1) 0.18

2) 0.23

3) 0.3

4) 0.45

**Answer:**0.3

**Q16:-** Which of the following is a factor for obsolescence of the property?

**Options:
**

**1)**New invention

**2)**Improvement in design

**3)**Outdated design and structure

**4)**All option are correct

**Answer:**All option are correct

**Q17:-** Calculate the years purchase for a property of useful life of 30 years and rate of interest of 5% per annum. The rate of interest for sinking fund is 3%.

**Options:
**

**1)**12.5

**2)**14

**3)**17

**4)**22

**Answer:**14

**Q18:-** The expression for the total volume of earthwork for an embankment using Simpson’s one third rule, if A_{1}, A_{2}, A_{3}, A_{4},…., A_{n-1} and A_{n} are the areas at n sections at an interval of h is______.

**Options:-
**

**1)**h/3 x [(A

_{1}+ A

_{n}) + 4(A

_{2}+A

_{1}+….) +2(A

_{3}+A

_{5}+….)]

**2)**h/3 x [(A

_{1}+ A

_{n}) + 2(A

_{2}+A

_{1}+….) +4(A

_{3}+A

_{5}+….)]

**3)**h/3 x [(A

_{1}+ A

_{n}) + 4(A

_{2}+A

_{4}+….) +(A

_{3}+A

_{5}+….)]

**4)**h/3 x [(A

_{1}+ A

_{n})/4 + (A

_{2}+A

_{1}+….) +(A

_{3}+A

_{5}+….)]

**Answer:**h/3 x [(A

_{1}+ A

_{n}) + 4(A

_{2}+A

_{4}+….) +2(A

_{3}+A

_{5}+….)]

**Q19 –** Which of the following quantity is measured using a Planimeter?

**Options:
**

**1)**Area

**2)**Bar diameter

**3)**Volume

**4)**Weight

**Answer:**Area

**Q20 –** The inside wall of a septic tank is ﬁnished with 12 mm cement plaster with 1 : 4 cement mortar. Calculate the quantity of the cement (cubic metre) required, if the size of the septic tank is 6 m x 4 m x 2 m.

**Options:
**

**1)**0.096

**2)**0.115

**3)**0.147

**4)**0.165

**Answer:**0.115

**Q21:-** In geodetic surveying, sum of angles (degree) of a spherical triangle should not be greater than_______.

**Options:
**

**1)**180

**2)**270

**3)**360

**4)**540

**Answer:**540

**Q22:-** Calculate the number of division of the main scale that is equal to the 8 divisions of the extended vernier.

**Options:
**

**1)**7

**2)**9

**3)**15

**4)**16

**Answer:**15

**Q23:-** An area of a ﬁeld is 250 square centimetres from a shrunk map having shrunk factor of 0.9. Calculate the original area (square metres) on the ﬁeld, if the original scale of the map is 1 cm = 50 m.

**Options:
**

**1)**309

**2)**625000

**3)**694444

**4)**771450

**Answer:**771450

**Q24:-** The length of the chain is equal to.

**Options:
**

**1)**Centre to centre distance between the last end of links

**2)**Sum of reduced level of benchmark and foresight

**3)**Sum of reduced level of benchmark and backsight

**4)**Sum of reduced level of benchmark and intermediate sight

**Answer:**Sum of reduced level of benchmark and intermediate sight

**Q25:-** Calculate the error (mm) in the linear measurement of offset, if the length of the offset is 80 m, then the accuracy in the measurement of the length is 1 cm in 60 m.

**Options:
**

**1)**0.075

**2)**1.33

**3)**7.5

**4)**13.3

**Answer:**13.3

**SSC Junior Engineer (JE) All Previous Papers (NewtonDesk.com)**

**Q26:-** Calculate the whole circle bearing of a line, if its reduced bearing is N 30^{o} W.

**Options:
**

**1)**30

^{o }

**2)**330

^{o }

**3)**N 330

^{o}W

**4)**S 60

^{o}W

**Answer:**330

^{o}

**Q27:-** Which of the following is TRUE for the limit of accuracy in a compass surveying?

**Options:
**

**1)**Should not more than 5 minutes

**2)**Should not be less than 5 minutes

**3)**Should not more than 10 minutes

**4)**Should not be less than 10 minutes

**Answer:**Should not more than 5 minutes

**Q28:-** What should be the height (m) of a lighthouse, so that it can be visible from a distance of 3 km?

**Options:
**

**1)**0.101

**2)**0.605

**3)**0.673

**4)**0.707

**Answer:**0.605

**Q29:-** Calculate the apex distance, if the deﬂection angle is 60 degree and the degree of curve is 8 degree.

**Options:
**

**1)**33.26

**2)**124.13

**3)**215

**4)**262.8

**Answer:**33.26

**Q30:-** Which of the following contour represents either hills or ponds?

**Options:
**

**1)**Contour having concentric circles

**2)**Closely placed contour

**3)**Distant contour

**4)**Parallel contour

**Answer:**Contour having concentric circles

**Q31:-** Which of the soil possesses zero plasticity index?

**Options:
**

**1)**Clay

**2)**Clayey silt

**3)**Sand

**4)**Silty

**Answer:**Sand

**Q32:-** Which of the following roller is used to compact the coarse-grained soil?

**Options:
**

**1)**Drum roller

**2)**Pneumatic tyred roller

**3)**Tamping roller

**4)**Vibratory roller

**Answer:**Vibratory roller

**Q33:-** Which of the following represents expression for the passive earth pressure!

**Options:
**

**1)**tan

^{2}(45

^{o}+ ?/2)

**2)**μ / (1- μ)

**3)**tan

^{2}(45

^{o}– ?/2)

**4)**μ / (1+ μ)

**Answer:**tan

^{2}(45

^{o}+ ?/2)

**Q34:-** The internal angle of friction of a soil is 30 degree. What is the active earth pressure coefﬁcient for the soil mass?

**Options:
**

**1)**0.005

**2)**0.025

**3)**0.333

**4)**0.555

**Answer:**0.333

**Q35:-** Which of the following is measured in the poise?

**Options:
**

**1)**Dynamic viscosity

**2)**Kinematic viscosity

**3)**Velocity of ﬂow

**4)**Discharge

**Answer:**Dynamic viscosity

**Q36:-** Which of the following is measured with the help of hot wire anemometer?

**Options:
**

**1)**Velocity coefﬁcient

**2)**Surface tension

**3)**Viscosity

**4)**Velocity of ﬂuid

**Answer:**Velocity of ﬂuid

**Q37:-** A sphere of diameter 30 cm is moving with a uniform velocity of 4 m/s. The dynamic viscosity and speciﬁc gravity of the liquid is given as 0.8 poises and 0.9 respectively. What is the value of Reynolds number?

**Options:
**

**1)**135

**2)**10000

**3)**13500

**4)**15000

**Answer:**13500

**Q38:-** The sphere of diameter 0.02 m falls in a ﬂuid of kinematic viscosity of 10 stokes with the terminal velocity of 0.02 m/s. What is the value of the coefﬁcient of drag on the falling sphere?

**Options:
**

**1)**40

**2)**60

**3)**80

**4)**100

**Answer:**60

**Q39:-** What is the depth of the ﬂow (m) in a circular channel of diameter 2.0 m for the maximum velocity?

**Options:
**

**1)**1

**2)**1.62

**3)**2

**4)**2.83

**Answer:**1.62

**Q40:-** Which of the following expression represents the critical state of ﬂow in non-rectangular channel?

**Options:
**

**1)**y

_{c}= (q

^{2}/g)

^{1/3 }

**2)**Q

^{2}/g = A

^{3}/T

**3)**Q

^{3}/g = A

^{2}/T

**4)**Q

^{2}/g = A/T

^{3 }

**Answer:**Q

^{2}/g = A

^{3}/T

**Q41:-** The roughness coefﬁcient for the channel is given as f. The Chezy’s coefﬁcient is directly proportional to______.

**Options:-
**

**1)**f

**2)**√f

**3)**1/f

**4)**1/√f

**Answer:**1/√f

**Q42:-** The water ﬂows fully through the rectangular channel of lateral dimensions 4 m x 3 m. What is the velocity of ﬂow (m/s) through the channel, if the slope of energy line and Chezy’s constant is given as 0.0006 and 90 respectively?

**Options:
**

**1)**1.5

**2)**2.4

**3)**4.6

**4)**5

**Answer:**2.4

**Q43:-** Which of the following is the dimensionless parameter?

**Options:
**

**1)**Linear velocity

**2)**Gravity force

**3)**Reynolds number

**4)**Viscosity

**Answer:**Reynolds number

**Q44:-** The power of the pump is given as 30 hp. What is the equivalent power expressed in watts?

**Options:
**

**1)**20000

**2)**22380

**3)**25742

**4)**30500

**Answer:**22380

**Q45:- **Which ONE is the best method of the reclamation of the acidic soil?

**Options:
**

**1)**Leaching

**2)**Provision of good drainage

**3)**Use gypsum as a soil amendment

**4)**Use limestone as a soil amendment

**Answer:**Use limestone as a soil amendment

**Q46:-** Calculate the evaporation (mm) from a pond, if the pan evaporation is 45 mm. The pan coefﬁcient is 0.70.

**Options:
**

**1)**13.5

**2)**19.28

**3)**31.5

**4)**64.28

**Answer:**31.5

**Q47:-** The ruling design speed on a curve is 100 km/h and the super elevation on the curve is 7%. Calculate the ruling design radius (m) of the curve. Take coefﬁcient of the lateral friction as 0.15

**Options:
**

**1)**129

**2)**189

**3)**358

**4)**1668

**Answer:**358

**Q48:-** Which of the following is the CORRECT order for increasing width of a railway gauge?

**Options:
**

**1)**Broad gauge < light gauge < narrow gauge < metre gauge

**2)**Broad gauge < metre gauge < light gauge < narrow gauge

**3)**Light gauge < narrow gauge < metre gauge < broad gauge

**4)**Narrow gauge < light gauge < broad gauge < metre gauge

**Answer:**Light gauge < narrow gauge < metre gauge < broad gauge

**Q49:-** The population of a city in ﬁrst three continuous years is given as 6000, 8000 and 10000 respectively. What is the population of the city in the fourth continuous year, according to the geometric increase method?

**Options:
**

**1)**11500

**2)**12000

**3)**12870

**4)**14000

**Answer:**12870

**Q50:-** Which of the following is used to forecast the population of old and very large city?

**Options:
**

**1)**Arithmetical increase method

**2)**Geometric progression method

**3)**Graphical method

**4)**Logistic curve method

**Answer:**Arithmetical increase method

**SSC Junior Engineer (JE) All Previous Papers (NewtonDesk.com)**

**Q51:-** The strength of a riveted lap joint is equal to its

**1. **shearing strength

**2. **bearing strength

**3. **tearing strength

**Options:
**

**1)**Only A

**2)**Only B

**3)**Only C

**4)**Least of A, B and C

**Answer:**Least of A, B and C

**Q52:-** If ﬂexural rigidity of a column whose length is L and the loaded end is free, is EI, the critical load will be

**Options:
**

**1)**P

_{c}= πEI/(4L

^{2})

**2)**P

_{c}= π

^{2}EI/(4L

^{2})

**3)**P

_{c}= πEI

^{2}/(4L

^{2})

**4)**None of these

**Answer:**P

_{c}= π

^{2}EI/(4L

^{2})

**Q53:-** Maximum permissible slenderness ratio of compressive members which carry dead and superimposed load is

**Options:
**

**1)**350

**2)**250

**3)**180

**4)**80

**Answer:**180

**Q54:-** When plates are exposed to weather, tacking rivets are provided at a pitch in line not exceeding.

**Options:
**

**1)**8t

**2)**16 t

**3)**24 t

**4)**32 t

**Answer:**16 t

**Q55:-** In double lacing, the thickness ‘t’ of ﬂat lacing is

**Options:
**

**1)**t is less than 1/40th length between inner end rivets

**2)**t is less than 1/50th length between inner end rivets

**3)**t is less than 1/60th length between inner end rivets

**4)**t is less than 1/70th length between inner end rivets

**Answer:**t is less than 1/60th length between inner end rivets

**Q56:-** Column footing is provided

**Options:
**

**1)**to spread the column load over a larger area

**2)**to ensure that intensity of bearing pressure between the column footing and soil does not exceed permissible bearing capacity of the soil

**3)**to distribute the column load over soil through the column footing

**4)**All option are correct

**Answer:**All option are correct

**Q57:-** In a truss girder of a bridge, a diagonal consists of mild steel ﬂat 400 I.S.F. and carries a pull of 80 tones. If the gross diameter of the rivet is 26 mm, the number of rivets required in the splice is

**Options:
**

**1)**6

**2)**7

**3)**8

**4)**9

**Answer:**8

**Q58:-** The rolled steel I – sections are most commonly used as beams because these provide:

**1.** large moment of inertia with less cross-sectional area

**2. **greater lateral stability

**Options:
**

**1)**Only 1

**2)**Only 2

**3)**1 and 2

**4)**None of these

**Q59:-** For simply supported beams, the maximum permitted deﬂection is

**Options:
**

**1)**1/325 of the span

**2)**1/300 of the span

**3)**1/350 of the span

**4)**None of these

**Answer:**1/325 of the span

**Q60:-** The load on a lintel is assumed as uniformly distributed if the height of the masonry above it, is up to a height of

**Options:
**

**1)**the effective span

**2)**1.25 times the effective span

**3)**1.50 times the effective span

**4)**2.0 times the effective span

**Answer:**1.25 times the effective span

**Q61:-** Concrete containing

**Options:
**

**1)**Silicious aggregates, has higher co-efﬁcient of expansion

**2)**igneous aggregates, has intermediate co-efﬁcient of expansion

**3)**lime stones has lowest co-efﬁcient of expansion

**4)**All option are correct

**Answer:**All option are correct

**Q62:-** Tricalcium aluminate (C3 A)

**Options:
**

**1)**reacts fast with water

**2)**generates less heat of hydration

**3)**causes initial setting and early strength of cement

**4)**does not contribute to develop ultimate strength

**Answer:**generates less heat of hydration

**Q63:-** The percentage of the aggregate of F.M. 2.6 to be combined with coarse aggregate of F.M. 6.8 for obtaining the aggregates of F.M. 5.4, is

**Options:
**

**1)**0.3

**2)**0.4

**3)**0.5

**4)**0.6

**Answer:**0.5

**Q64:-** Pick up the correct statement from the following

**Options:
**

**1)**Water enables chemical reaction to take place with cement

**2)**Water lubricates the mixture of gravel, sand and cement

**3)**Only a small quantity of water is required for hydration of cement

**4)**All option are correct

**Answer:**All option are correct

**Q65:-** If the slump of a concrete mix is 60 mm, its workability is

**Options:
**

**1)**very low

**2)**low

**3)**medium

**4)**high

**Answer:**medium

**Q66:-** Pick up the incorrect statement from the following: While performing preliminary test on concrete

**Options:
**

**1)**proportions of the material and water should be the same as to be used at the work site

**2)**cement should be mixed by hand in order to maintain uniformity

**3)**concrete mix should be stored in air-tight containers

**4)**concrete ingredients should be kept at a temperature of 37

^{o}± 2

^{o}C

**Answer:**concrete ingredients should be kept at a temperature of 37

^{o}± 2

^{o}C

**Q67:-** While compacting the concrete by a mechanical vibrator, the slump should not exceed

**Options:
**

**1)**2.5 cm

**2)**5 cm

**3)**7.5 cm

**4)**10 cm

**Answer:**5 cm

**Q68:-** Non-uniform compaction may cause the concrete

**Options:
**

**1)**porous

**2)**non-homogeneous

**3)**reduced strength

**4)**All option are correct

**Answer:**All option are correct

**Q69:-** A construction joint is provided where

**Options:
**

**1)**bending moment is small

**2)**shear force is small

**3)**the member is supported by other member

**4)**All option are correct

**Answer:**All option are correct

**Q70:-** The type of aggregates not suitable for high strength concrete and for pavements subjected to tension is

**Options:
**

**1)**rounded aggregate

**2)**irregular aggregate

**3)**angular aggregate

**4)**ﬂaky aggregate

**Answer:**rounded aggregate

**Q71:-** I.S. Sieve Nos. 10 mm and 4.75 mm are generally used for grading of

**Options:
**

**1)**coarse aggregates

**2)**ﬁne aggregates

**3)**Both coarse aggregates and ﬁne aggregates

**4)**None of these

**Answer:**Both coarse aggregates and ﬁne aggregates

**Q72:-** Pick up the correct statement from the following

**Options:
**

**1)**Sand obtained from pits, is washed to remove clay and silt

**2)**Sand obtained from ﬂooded pits, need not be washed before use

**3)**Sea shore sand contains chlorides which cause efﬂorescence

**4)**All option are correct

**Answer:**All option are correct

**Q73:-** The risk of segregation is more for

**Options:
**

**1)**wetter mix

**2)**larger proportion of maximum size aggregate

**3)**coarser grinding

**4)**All option are correct

**Answer:**All option are correct

**Q74:-** The cement whose strength is a little lower than the ordinary cement during the ﬁrst three months but attains afterwards the same strength is known as

**Options:
**

**1)**low-heated Portland cement

**2)**rapid hardening Portland cement

**3)**Portland blast slag cement

**4)**Portland pozzolana cement

**Answer:**low-heated Portland cement

**Q75:-** The maximum size of aggregate in concrete depends upon

**Options:
**

**1)**thickness of the structural section

**2)**spacing of reinforcement

**3)**clear cover

**4)**All option are correct

**Answer:**All option are correct

**SSC Junior Engineer (JE) All Previous Papers (NewtonDesk.com)**

**Q76:-** Which one of the following materials is used as a bonding admixture

**Options:
**

**1)**Natural rubber

**2)**Synthetic rubber

**3)**Organic polymers

**4)**All option are correct

**Answer:**All option are correct

**Q77:-** Identify the correct statements.

**Options:
**

**1)**Expanding cement is used for ﬁlling the cracks

**2)**White cement is mostly used for decorative works

**3)**Portland pozzolana cement produces less heat of hydration

**4)**High strength Portland cement is produced from the special materials

**Answer:**High strength Portland cement is produced from the special materials

**Q78:-** Which of the following is/are deleterious material in aggregate?

**Options:
**

**1)**Coal

**2)**Clay lumps

**3)**Soft fragments

**4)**All option are correct

**Answer:**All option are correct

**Q79:-** In a singly reinforced beam, the effective depth is measured from its compression edge to

**Options:
**

**1)**tensile edge

**2)**tensile reinforcement

**3)**neutral axis of the beam

**4)**longitudinal central axis

**Answer:**tensile reinforcement

**Q80:-** In a doubly-reinforced beam if c and t are stresses in concrete and tension reinforcement, d is the effective depth and n is depth of critical neutral axis n, the following relationship holds good

**Options:
**

**1)**mc/t = n/(d-n)

**2)**(m+c)/t = n/(d+n)

**3)**(t+c)/m=(d+n)/n

**4)**mc/t = (d-n)/t

**Answer:**mc/t = n/(d- n)

**Q81:-** The maximum shear stress (q) in concrete of a reinforced cement concrete beam is

**Options:
**

**1)**shear force /(Lever arm x Width)

**2)**Lever arm/(Shear force x Width)

**3)**Width/(Lever arm x Shear force)

**4)**None of these

**Answer:**shear force /(Lever arm x Width)

**Q82:-** The anchorage value of a hook is assumed sixteen times the diameter of the bar if the angle of the bend is

**Options:
**

**1)**30

^{o }

**2)**40

^{o }

**3)**45

^{o }

**4)**All option are correct

**Answer:**All option are correct

**Q83:-** Minimum spacing between horizontal parallel reinforcement of the same size should not be less than

**Options:
**

**1)**one diameter

**2)**2.5 diameters

**3)**3 diameters

**4)**3.5 diameters

**Answer:**one diameter

**Q84:-** The spacing of transverse reinforcement of column is decided by the following consideration

**Options:
**

**1)**The least lateral dimension of the column

**2)**Sixteen times the diameter of the smallest longitudinal reinforcing rods in the column

**3)**Forty- eight times the diameter of transverse reinforcement

**4)**All option are correct

**Answer:**All option are correct

**Q85:-** The amount of reinforcement for main bars in a slab is based upon

**Options:
**

**1)**minimum bending moment

**2)**maximum bending moment

**3)**maximum shear force

**4)**minimum shear force

**Answer:**maximum bending moment

**Q86 –** In a combined footing for two columns carrying unequal loads, the maximum hogging bending moment occurs at

**Options:
**

**1)**less loaded column

**2)**more loaded column

**3)**a point of equidistant from either column

**4)**None of these

**Answer:**None of these

**Q87:-** Piles are usually driven by

**Options:
**

**1)**diesel operated hammer

**2)**drop hammer

**3)**single acting steam hammer

**4)**All option are correct

**Answer:**All option are correct

**Q88:-** The angle of repose of a soil is the maximum angle which the outer face of the soil mass makes

**Options:
**

**1)**with the horizontal

**2)**with the vertical

**3)**with the perpendicular to the inclined plane of the soil

**4)**None of these

**Answer:**with the horizontal

**Q89:-** A compound truss may be formed by connecting two simple rigid frames by

**Options:
**

**1)**two bars

**2)**three bars

**3)**three parallel bars

**4)**three bars intersecting at a point

**Answer:**three bars

**Q90:-** The ratio of the maximum deﬂections of a simply supported beam with a central load W and of a cantilever of same length with a load Wat its free end is

**Options:
**

**1)**1/8

**2)**1/10

**3)**1/12

**4)**1/16

**Answer:**1/16

**Q91:-** A bar of square section of area a2 is held such that one of its diameters is vertical. The maximum shear stress will develop at a depth h where h is

**Options:
**

**1)**(2√3)/4

**2)**(3√2)/4

**3)**2/√3

**4)**√3/4

**Answer:**(3√2)/4

**Q92:-** If Ix and IY are the moments of inertia of a section about X and Y axes, the polar moment of inertia of the section is

**Options:
**

**1)**(I

_{X}+ I

_{Y})/2

**2)**(I

_{X}– I

_{Y})/2

**3)**I

_{X}+ I

_{Y }

**4)**I

_{X}/ I

_{Y }

**Answer:**I

_{X}+ I

_{Y}

**Q93:-** In the truss shown below, the force in member DC is

**Options:
**

**1)**100 t compressive

**2)**100 t tensile

**3)**zero

**4)**Indeterminate

**Answer:**Zero

**Q94:-** The force in BF of the truss shown in figure below is

**Options:
**

**1)**4t tension

**2)**4t compression

**3)**4.5 t tension

**4)**4.5 t compression

**Answer:**4.5 t compression

**Q95:-** Pick up the incorrect statement from the following:

The torsional resistance of a shaft is directly proportional to

**Options:
**

**1)**modulus of rigidity

**2)**angle of twist

**3)**reciprocal of the length of the shaft

**4)**moment of inertia of the shaft section

**Answer:**moment of inertia of the shaft section

**Q96:-** If the strain energy stored per unit volume in a hollow shaft subjected to a pure torque when t attains maximum shear stress fs is (17 fs)/(64 N), the ratio of the inner diameter to outer diameter is

**Options:
**

**1)**1/2

**2)**1/3

**3)**1/4

**4)**1/5

**Answer:**1/4

**Q97:-** The maximum height of a masonry dam of a triangular section whose base width is b and speciﬁc gravity s is

**Options:
**

**1)**b √s

**2)**b.s

**3)**√bs

**4)**s √b

**Answer:**b√s

**Q98:-** The locus of reaction of a two-hinged semi-circular arch is

**Options:
**

**1)**straight line

**2)**parabola

**3)**circle

**4)**hyperbola

**Answer:**straight line

**Q99:-** The ratio of circumferential stress to the longitudinal stress in the walls of a cylindrical shell, due to ﬂowing liquid, is

**Options:
**

**1)**1/2

**2)**1

**3)**1.5

**4)**2

**Answer:**2

**Q100:-** The equivalent length of a column of length L having one end ﬁxed at the other end hinged is

**Options:
**

**1)**2L

**2)**L

**3)**L/2

**4)**L/√2

**Answer:**L/√2