**SSC Junior Engineer (JE) Exam Paper – 2018 “held on 29 January 2018” Evening Shift (Civil Engineering)**

**Q1:-** Which of the following is calcareous raw material used in the cement production?

**Options:
**

**1)**Cement rock

**2)**Lime stone

**3)**Marine shells

**4)**All option are correct

**Answer:**Marine shells

**Q2:-** If the size of specimen used to test the compressive strength of concrete is decreased, then the compressive strength of concrete will______.

**Options:
**

**1)**decrease

**2)**do not affected

**3)**ﬁrst decrease then increase rapidly

**4)**increase

**Answer:**increase

**Q3 –** What is the bottom diameter (mm) of the standard mould used in slump test of the concrete?

**Options:
**

**1)**50

**2)**100

**3)**150

**4)**200

**Answer:**200

**Q4:-** The showing up of white ﬂuffy layers on the surfaces of concrete is termed as______.

**Options:
**

**1)**consistency

**2)**efﬂorescence

**3)**segregation

**4)**workability

**Answer:**efﬂorescence

**Q5:-** Tempering is the process used in the manufacturing of______.

**Options:
**

**1)**bricks

**2)**bitumen

**3)**cement

**4)**paints

**Answer:**bricks

**Q6:-** Which of the following is burnt in the Hoffman’s kiln during the process of manufacturing?

**Options:
**

**1)**Bitumen

**2)**Bricks

**3)**Clinker

**4)**Varnishes

**Answer:**Bricks

**Q7:-** In which of the following case Bethel process is used?

**Options:
**

**1)**Brick manufacturing

**2)**Cement manufacturing

**3)**Manufacturing of bituminous material

**4)**Treatment of timber

**Answer:**Treatment of timber

**Q8:-** For proper workability of concrete, the water-cement ratio varies from_______.

**Options:
**

**1)**0.1 to 0.2

**2)**0.2 to 0.4

**3)**0.4 to 0.6

**4)**0.6 to 0.8

**Answer:**0.4 to 0.6

**Q9:-** The viscous liquid obtained from the destructive distillation of organic material is known as______.

**Options:
**

**1)**paint

**2)**slag

**3)**tar

**4)**None of these

**Answer:**tar

**Q10:-** What is the approximate bitumen content (expressed in percentage) in the reﬁned asphalt?

**Options:
**

**1)**5

**2)**20

**3)**36

**4)**52

**Answer:**52

**Q11:-** Which of the following is correct statement for the cubical content methods?

**Options:
**

**1)**Cost of building is estimated by multiplying the total area with areal rate

**2)**It is based on the total area of the building.

**3)**It is less accurate as compared to plinth area estimate.

**4)**It is best suitable for the estimate of multi storey building.

**Answer:**It is best suitable for the estimate of multi storey building.

**Q12:-** How many bags of cement are required for 14 cubic meter of cement concrete work (1 : 2 : 4)?

**Options:
**

**1)**58

**2)**70

**3)**88

**4)**116

**Answer:**88

**Q13:-** The approximate quantity (kg) of bending and binding the reinforcement of mild steel per mason per day is______.

**Options:
**

**1)**200

**2)**375

**3)**450

**4)**575

**Answer:**375

**Q14:-** The knowledge of which items is necessary for the analysis of rates?

**Options:
**

**1)**Contractor’s proﬁt

**2)**Tool and plant expenditure

**3)**Task of a labour in one day

**4)**All option are correct

**Answer:**All option are correct

**Q15:-** What is the unit of measurement of pointing?

**Options:
**

**1)**Meter

**2)**Cubic meter

**3)**Kilograms

**4)**Square meter

**Answer:**Square meter

**Q16:-** What is the nominal size (cm) of the standard brick as per Indian Standards?

**Options:
**

**1)**19 x 9 x 9

**2)**20 x 9 x 9

**3)**20 x 10 x 10

**4)**22.9 x 11.4 x 7.6

**Answer:**20 x 10 x 10

**Q17:-** The objective of creating the sinking fund is to accumulate the sufﬁcient money to_____.

**Options:
**

**1)**meet cost of construction and replacement after its useful life.

**2)**pay taxes

**3)**recover the cost of construction

**4)**save money for future

**Answer:**meet cost of construction and replacement after its useful life.

**Q18:-** Calculate the total weight (kg) of the steel bar required for a slab of 3 m x 2 m, if the slab is reinforced with 16 mm diameter bars @ 250 mm c/c in longitudinal and transverse direction.

**Options:
**

**1)**38

**2)**75.85

**3)**82.17

**4)**113.78

**Answer:**75.85

**Q19:-** Which of the following person functions as an arbitrator in public work department?

**Options:
**

**1)**Chief engineers

**2)**Junior engineer

**3)**Superintending engineer

**4)**Supervisor

**Answer:**Superintending engineer

**Q20:-** Calculate the volume (cubic metre) of earth work in an embankment of length 15 m. The top width of the embankment is 5 m and depth is 3 m. The side slope is 1.5 : 1.

**Options:
**

**1)**225

**2)**326.25

**3)**367

**4)**427.5

**Answer:**427.5

**Q21:-** In geodetic surveying, sum of all the internal angles (degree) of a spherical triangle should be____.

**Options:
**

**1)**equal to 180

**2)**equal to 360

**3)**greater than 180

**4)**less than 180

**Answer:**greater than 180

**Q22:-** A line of 5 m on the original map is shrunk to 4.6 m. Calculate the shrunk scale if the original scale of the map was 1 cm = 80 m.

**Options:
**

**1)**1 cm = 73.6 m

**2)**1 cm = 79.6 m

**3)**1 cm = 86.95 m

**4)**1 cm = 92.4 m

**Answer:**1 cm = 86.95 m

**Q23:-** Which of the following instrument is used for setting out right angles?

**Options:
**

**1)**Clinometers

**2)**Offset rod

**3)**Prism square

**4)**Plumb bob

**Answer:**Prism square

**Q24:-** Determine the normal pull (kg) for a tape of 20 m long standardized at a pull of 30 kg. The cross section area of the tape is 0.5 square centimetres, weight of the tape per metre is 20 gm. Take modulus of the elasticity for tape material as 21,00,000 kg per square centimetre.

**Options:
**

**1)**28

**2)**36.8

**3)**64

**4)**78

**Answer:**64

**Q25:-** Which of the following expression is used for calculation of R.L of a point?

**Options:
**

**1)**Height of instrument minus back sight

**2)**Height of instrument plus fore sight

**3)**Reduced level of previous point minus fore sight

**4)**Reduced level of previous point minus fall

**Answer:**Reduced level of previous point minus fall

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**Q26:-** Calculate the reduced bearing of a line if its whole circle bearing is 130 degree.

**Options:
**

**1)**50

^{o }

**2)**N 130

^{o}E

**3)**S 50

^{o}E

**4)**S 50

^{o}W

**Answer:**S 50

^{o}E

**Q27:-** Fore bearing and back bearing of the lines of a traverse are as follows:

Line | AB | BC | CD | DE |

Fore bearing (degree) | 125 | 172 | 264 | 315 |

Back bearing (degree) | 304 | 351 | 83 | 136 |

**Options:
**

**1)**A and D

**2)**A and C

**3)**C and D

**4)**Only D

**Answer:**Only D

**Q28:-** Which of the following features is shown by the parallel contour lines?

**Options:
**

**1)**Flat plains

**2)**Hills

**3)**Steep slope

**4)**Uniform slope

**Answer:**Uniform slope

**Q29:-** Calculate the distance between the instrument and the staff if the staff readings are 1.56 m, 2.05 m and 2.56 m. The multiplying constant is 100 and additive constant is 10.

**Options:
**

**1)**61

**2)**110

**3)**112

**4)**215.67

**Answer:**110

**Q30:-** Calculate the length (m) of the longer chord of 250 m radius curve having deﬂection angle of 90 degree.

**Options:
**

**1)**250

**2)**353.6

**3)**392.7

**4)**500

**Answer:**353.6

**Q31:-** 10 m thick confined aquifer gives the steady state discharge of 0.03m^{3}/s through the well of 50 cm radius. Due to pumping, the height of water in the well is dropped from 15 m to 10 m and the radius of influence is obtained as 500 m. What is the coefficient of permeability (mm/s)?

**Options:
**

**1)**0.66

**2)**0.99

**3)**1.25

**4)**6.89

**Answer:**0.66

**Q32:-** Which of the following represents the range of plasticity index for silt?

**Options:
**

**1)**10 to 15

**2)**15 to 25

**3)**25 to 35

**4)**35 to 45

**Answer:**10 to 15

**Q33:-** The grain size (mm) of medium grained sand lies between_____.

**Options:
**

**1)**0.425 to 0.075

**2)**2.0 to 0.425

**3)**4.75 to 2.0

**4)**20 to 4.75

**Answer:**2.0 to 0.425

**Q34:-** During the ﬂow over length of 30 m, the head loss of 5 m is occurred during the seepage. What is the value of hydraulic gradient?

**Options:
**

**1)**0.005

**2)**0.045

**3)**0.167

**4)**0.192

**Answer:**0.167

**Q35:-** Which of the following is measured with the help of barometer?

**Options:
**

**1)**Velocity

**2)**Discharge intensity

**3)**Pressure

**4)**Surface tension

**Answer:**Pressure

**Q36:-** If the gauge pressure and atmospheric pressure at a point are observed as 70 mm of mercury and 750 mm of mercury respectively. What is the value of the absolute pressure (mm of mercury) at that point?

**Options:
**

**1)**500

**2)**680

**3)**750

**4)**820

**Answer:**820

**Q37:-** The rise of mercury in barometer is indicated as 80 mm. What is the atmospheric pressure (kN/m^{2}) at that point?

**Options:
**

**1)**80

**2)**500

**3)**10696

**4)**15434

**Answer:**10696

**Q38:-** Water is transported on a level road in the cylindrical container of diameter 0.5 m and height 0.8 m. The maximum acceleration of vehicle is 5m/s^{2}. What is the initial allowable height of water (cm) in the tank, if there is no spill?

**Options:
**

**1)**50.5

**2)**67.3

**3)**92.7

**4)**100

**Answer:**67.3

**Q39:-** For a flow, the velocity field and variation in density is given as, and **ρ= ρ _{o}e^{-3t}** respectively. What is the value of

**λ**, if the mass is conserved?

**Options:**

**1)**-11

**2)**-10

**3)**10

**4)**11

**Answer:**-11

**Q40:-** A circular pipe of diametre 0.5 m carries the discharge of 50 litres/s. The head loss due to friction in pipe is 0.15 m and friction factor for the pipe is given as 0.01. What is the length (m) of pipe?

**Options:
**

**1)**50.5

**2)**85.71

**3)**98.95

**4)**110.01

**Answer:**85.71

**Q41:-** A siphon is used at point A to draw the water from large reservoir and discharge it to the point B at an atmospheric pressure. If the elevation difference of points A and B is 10 m, what is the velocity (m/s) at point B?

**Options:
**

**1)**10

**2)**14

**3)**24

**4)**34

**Answer:**14

**Q42:-** If the two exactly same pumps are running at the same speed and lift the water at the head of 20 m and 30 m respectively. What is the diameter of impeller of second pump if the diameter (mm) of impeller of ﬁrst pump is 500 mm?

**Options:
**

**1)**430.2

**2)**500.5

**3)**612.5

**4)**714.3

**Answer:**612.5

**Q43:-** The Bulk modulus of a fluid is given by 25 GPa. What is the compressibility (Pa^{-1}) of that fluid?

**Options:
**

**1)**4×10

^{-9 }

**2)**4×10

^{-11 }

**3)**25×10

^{-9 }

**4)**25×10

^{-11 }

**Answer:**4×10

^{-11}

**Q44:-** Which of the following parameter is measured with the help of elbow meter?

**Options:
**

**1)**Acceleration

**2)**Velocity

**3)**Viscosity

**4)**Discharge

**Answer:**Discharge

**Q45:-** Which one of the followings is not a cause of water-logging?

**Options:
**

**1)**Excess tapping of the ground water

**2)**Excess rainfall

**3)**Frequent irrigation

**4)**High water table

**Answer:**Excess tapping of the ground water

**Q46:-** Calculate the velocity of ﬂow through a channel if the mean diameter of the soil particles is 0.5 mm and discharge is 60 cumces.

**Options:
**

**1)**0.75

**2)**0.86

**3)**0.93

**4)**0.98

**Answer:**0.93

**Q47:-** What is the value of the slope require for coning of the wheel?

**Options:
**

**1)**1 in 5

**2)**1 in 10

**3)**1 in 20

**4)**1 in 25

**Answer:**1 in 20

**Q48:-** Calculate the ratio of radius of the relative stiffness for concrete pavements if the ratio of their thickness is 1.5.

**Options:
**

**1)**1.106

**2)**1.355

**3)**1.837

**4)**3.375

**Answer:**1.355

**Q49:-** Which of the following represents the value of hourly variation factor?

**Options:
**

**1)**1.2

**2)**1.5

**3)**1.7

**4)**2.5

**Answer:**1.5

**Q50:-** What is the rainfall intensity (mm/hr) according to the formula given by British Ministry of Health, if the time of concentration is 540 seconds?

**Options:
**

**1)**20

**2)**30

**3)**40

**4)**50

**Answer:**40

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

**Q51:-** Efﬁciency of a riveted joint us deﬁned as the ratio of

**Options:
**

**1)**least strength of a riveted joint to the strength of solid plate

**2)**greatest strength of a riveted joint to the strength of solid plate

**3)**least strength of a riveted plate to the greatest strength of the riveted joint

**4)**All option are correct

**Answer:**All option are correct

**Q52:-** The critical load for a column of length l hinged at both ends and having ﬂexural rigidity EI, is given by

**Options:
**

**1)**P

_{c}= πEI/(L

^{2})

**2)**P

_{c}= π

^{2}EI/(L

^{2})

**3)**P

_{c}= πEI

^{2}/(L

^{2})

**4)**None of these

**Answer:**P

_{c}= π

^{2}EI/(L

^{2})

**Q53:-** For determination of allowable stress in axial compression, Indian Standard Institution has adopted

**Options:
**

**1)**Euler’s formula

**2)**Rankine formula

**3)**Engesser formula

**4)**Secant formula

**Answer:**Secant formula

**Q54:-** When a large value of radius of gyration is not required

**Options:
**

**1)**channels are placed back to back

**2)**channel ﬂanges are kept inward

**3)**channel ﬂanges are kept outward

**4)**None of these

**Answer:**channel ﬂanges are kept inward

**Q55:-** Perforated cover plates are particularly suitable for built up sections consisting of

**Options:
**

**1)**channels placed back to back

**2)**channels placed toe to toe

**3)**four angle box section

**4)**All option are correct

**Answer:**four angle box section

**Q56:-** In a grillage footing, the maximum shear force occurs at the

**Options:
**

**1)**edge of grillage beam

**2)**center of base plate

**3)**center of grillage beam

**4)**None of these

**Answer:**center of base plate

**Q57:-** Lug angle is

**Options:
**

**1)**used with single angle member

**2)**not used with double angle member

**3)**used with channel member

**4)**All option are correct

**Answer:**All option are correct

**Q58:-** With usual notations of the letters, the shear stress f_{s} at any point of the cross-section is given by

**Options:
**

**1)**f

_{s}=FQ/lt

**2)**f

_{s}= Ft/IQ

**3)**f

_{s}= It/FQ

**Answer:**f

_{s}=FQ/lt

**Q59:-** A simply supported beam carrying a central load, will be safe in deﬂection if the ratio of its span to depth is

**Options:
**

**1)**less than 19

**2)**less than 24

**3)**greater than 19

**4)**greater than 24

**Answer:**less than 24

**Q60:-** Rise of a Jack arch is kept about

**Options:
**

**1)**1/2 to 1/3 of the span

**2)**1/3 to 1/4 of the span

**3)**1/4 to 1/8 of the span

**4)**1/8 to 1/12 of the span

**Answer:**1/8 to 1/12 of the span

**Q61:-** Separation of coarse aggregates from mortar during transportation is known

**Options:
**

**1)**bleeding

**2)**creeping

**3)**segregation

**4)**shrinkage

**Answer:**segregation

**Q62:-** Pick up the correct statement from the following:

**Options:
**

**1)**High percentage of (C3 S) and low percentage of (C2 S) cause rapid hardening

**2)**High percentage of (C3 S) and low percentage of (C2 S) make the cement less resistive to chemical attack

**3)**Low percentage of (C3 S) and high percentage of (C2 S) contribute to slow hardening

**4)**All option are correct

**Answer:**All option are correct

**Q63:-** Water cement ratio is

**Options:
**

**1)**volume of water to that of cement

**2)**weight of water to that of cement

**3)**Both ‘volume of water to that of cement ‘ and ‘weight of water to that of cement ‘.

**4)**weight of concrete to that of water

**Answer:**Both ‘volume of water to that of cement ‘ and ‘weight of water to that of cement ‘.

**Q64:-** Higher workability of a concrete is required if the structure is

**Options:
**

**1)**made with cement concrete

**2)**thick and reinforced

**3)**thin and heavily reinforced

**4)**thick and heavily reinforced

**Answer:**thick and heavily reinforced

**Q65:-** Workability of concrete mix with low water cement ratio is determined by

**Options:
**

**1)**tensile strength test

**2)**slump test

**3)**compaction factor test

**4)**ﬂexural strength test

**Answer:**compaction factor test

**Q66:-** For preparing a test specimen it is necessary

**Options:
**

**1)**to mix cement and ﬁne aggregate by dry hand

**2)**to mix coarse aggregates

**3)**to mix water to the cement, ﬁne aggregates and coarse aggregates

**4)**All option are correct

**Answer:**All option are correct

**Q67:-** The maximum thickness of concrete floor of a cement warehouse is

**Options:
**

**1)**10 cm

**2)**15 cm

**3)**20 cm

**4)**25 cm

**Answer:**25 cm

**Q68:-** The compaction of concrete improves

**Options:
**

**1)**density

**2)**strength

**3)**durability

**4)**All option are correct

**Answer:**All option are correct

**Q69:-** Horizontal construction joints in concrete walls are generally provided at

**Options:
**

**1)**window sill level

**2)**sofﬁt level

**3)**ﬂoor level

**4)**All option are correct

**Answer:**All option are correct

**Q70:-** Workability of concrete for a given water content is good if the aggregates are

**Options:
**

**1)**rounded aggregate

**2)**irregular aggregate

**3)**angular aggregate

**4)**ﬂaky aggregate

**Answer:**rounded aggregate

**Q71:-** If a grading curve is horizontal between the portions of 20 mm I.S. Sieve and 4.75 mm I.S. sieve, the graded aggregates do not contain

**Options:
**

**1)**20 mm particles

**2)**10 mm particles

**3)**4.75 mm particles

**4)**All option are correct

**Answer:**All option are correct

**Q72:-** Saw dust can be rendered chemically inert by boiling it in water containing

**Options:
**

**1)**ferrous sulphate

**2)**potassium chloride

**3)**ammonia

**4)**None of these

**Answer:**ferrous sulphate

**Q73:-** Pick up the correct statement from the following

**Options:
**

**1)**Continuous grading is not necessary for obtaining a minimum of air voids

**2)**The omission of a certain size of aggregate is shown by a straight horizontal line on the grading curve

**3)**The omission of a certain size of aggregate in concrete increases the workability but also increases the liability

**4)**All option are correct

**Answer:**All option are correct

**Q74:-** For construction of structures in sea water, the cement generally preferred to is

**Options:
**

**1)**Portland –pozzolana cement

**2)**quick setting cement

**3)**low heat Portland cement

**4)**None of these

**Answer:**Portland –pozzolana cement

**Q75:-** The strength of concrete made with angular aggregate and rounded aggregate is practically same at the water/cement ratio is

**Options:
**

**1)**0.4

**2)**0.48

**3)**55

**4)**0.65

**Answer:**0.65

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**Q76:-** Pick up the correct statement from the following: Drying shrinkage is affected by

**Options:
**

**1)**The relative humidity of the atmosphere when the concrete is placed

**2)**The length of time

**3)**The water/cement ratio of the concrete

**4)**All option are correct

**Answer:**All option are correct

**Q77:-** The compound constituent of cement abbreviated by C3A represents:

**Options:
**

**1)**tricalcium alumino ferrite

**2)**tricalcium aluminate

**3)**tricalcium silicate

**4)**dicalcium silicate

**Answer:**tricalcium aluminate

**Q78:-** Deleterious substances in aggregate are undesirable because they may:

**Options:
**

**1)**affect the strength, workability, and long term performance of concrete

**2)**have intrinsic weakness, softness and ﬁneness

**3)**interfere with the chemical reaction of hydration

**4)**All option are correct

**Answer:**All option are correct

**Q79:-** If the modular ratio is m, steel ratio is r and overall depth of a beam is d, the depth of the critical neutral axis of the beam is

**Options:
**

**1)**{m/(m – r)}* d

**2)**{m/(m + r)}* d

**3)**{(m+r)/m}* d

**4)**None of these

**Answer:**{m/(m + r)}* d

**Q80:-** According to the steel beam theory of doubly reinforced beams

**Options:
**

**1)**tension is resisted by tension steel

**2)**compression is resisted by compression steel

**3)**stress in tension steel equals the stress in compression steel

**4)**All option are correct

**Answer:**All option are correct

**Q81:-** If Sb is the average bond stress on a bar of diameter d subjected to maximum stress t, the length of the embedment l is given by

**Options:
**

**1)**l = dt/S

_{b }

**2)**l = dt/(2S

_{b})

**3)**l = dt/(3S

_{b})

**4)**l = dt/(4S

_{b})

**Answer:**l = dt/(4S

_{b})

**Q82:-** The stresses developed in concrete and steel in reinforced concrete beam 25 cm width and 70 cm effective depth are 62.5 kg/cm2and 250 kg/cm2respectively. If m= 15, the depth of its neutral axis is

**Options:
**

**1)**20 cm

**2)**25 cm

**3)**30 cm

**4)**35 cm

**Answer:**30 cm

**Q83:-** A T-beam behaves as a rectangular beam of a width equal to its ﬂange if its neutral axis

**Options:
**

**1)**remains within the ﬂange

**2)**remains below the slab

**3)**coincides the geometrical center of the beam

**4)**None of these

**Answer:**remains within the ﬂange

**Q84:-** If the maximum bending moment of a simply supported slab is M Kg.cm the effective depth of the slab is: (It is given that Q is M.R. factor)

**Options:
**

**1)**M/(100 Q)

**2)**M/(10√Q)

**3)**M/√Q

**4)**None of these

**Answer:**None of these

**Q85:-** The percentage of minimum reinforcement should of the gross sectional area in slabs is

**Options:
**

**1)**0.001

**2)**0.0012

**3)**0.0015

**4)**0.0018

**Answer:**0.0015

**Q86:-** In a combined footing if shear stress does not exceed 5 kg⁄cm2, the nominal stirrups provided are

**Options:
**

**1)**6 legged

**2)**8 legged

**3)**10 legged

**4)**12 legged

**Answer:**8 legged

**Q87:-** On piles, the drop must be at least

**Options:
**

**1)**80 cm

**2)**100 cm

**3)**120 cm

**4)**140 cm

**Answer:**120 cm

**Q88:-** Total pressure on the vertical face of a retaining wall of height h acts parallel to free surface and from the base at a distance of h

**Options:
**

**1)**h/4

**2)**h/3

**3)**h/2

**4)**2h/3

**Answer:**h/3

**Q89:-** The ratio of the length and depth of a simply supported rectangular beam which experiences maximum bending stress equal to tensile stress due to same load at its mid span is

**Options:
**

**1)**1/2

**2)**2/3

**3)**1/4

**4)**1/3

**Answer:**2/3

**Q90:-** The maximum deﬂection of a simply supported beam of span L carrying an isolated load at the center of the span, ﬂexural rigidity being EI is

**Options:
**

**1)**WL

^{3}/3EI

**2)**WL

^{3}/8EI

**3)**WL

^{3}/24EI

**4)**WL

^{3}/48EI

**Answer:**WL

^{3}/48EI

**Q91:-** A steel plate d x b is sandwiched rigidly between two timber joists each D x B/2 in section. The moment of resistance of the beam for the same maximum permissible stress σ in timber and steel will be:

Where Young’s modulus of steel is m times that of the timber

**Options:
**

**1)**σ(BD

^{2}+ mbd

^{2})/6D

**2)**σ(BD

^{3}+ mbd

^{3})/6D

**3)**σ(BD

^{3}+ mbd

^{3})/4D

**4)**σ(BD

^{2}+ mbd

^{2})/4D

**Answer:**σ(BD

^{3}+ mbd

^{3})/6D

**Q92:-** The radius of gyration of a section of area A and least moment of inertia I about the centroidal axis is

**Options:
**

**1)**A/I

**2)**I/A

**3)**√(I/A)

**4)**√(A/I)

**Answer:**√(I/A)

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

**Options:
**

**1)**100 t compressive

**2)**100 t tensile

**3)**zero

**4)**indeterminate

**Answer:**100 t compressive

**Q94:-** The Force in AD of the truss shown in figure below is

**Options:
**

**1)**4.0 t compression

**2)**3.0 t compression

**3)**0.5 t compression

**4)**0.5 t tension

**Answer:**0.5 t compression

**Q95:-** If D and d are external and internal diameters of a circular shaft respectively, its polar moment of inertia is

**Options:
**

**1)**π(D

^{4}– d

^{4})/2

**2)**π(D

^{4}– d

^{4})/4

**3)**π(D

^{4}– d

^{4})/64

**4)**π(D

^{4}– d

^{4})/32

**Answer:**π(D

^{4}– d

^{4})/32

**Q96:-** Pick up the correct statement from the following

**Options:
**

**1)**A wire wound in spiral form is called helical spring

**2)**The pitch of a close coil spring is very small

**3)**The angle made by the coil with horizontal, is called the angle of helix

**4)**All option are correct

**Answer:**All option are correct

**Q97:-** If Q is load factor, S is shape factor and F is factor of safety in elastic design, the following:

**Options:
**

**1)**Q=S + F

**2)**Q=S – F

**3)**Q=F – S

**4)**Q=S x F

**Answer:**Q=S x F

**Q98:-** A two hinged parabolic arch of span l and rise h carries a load varying from zero at the left end to w per unit run at the right end. The horizontal thrust is

**Options:
**

**1)**(wl

^{2})/4h

**2)**(wl

^{2})/8h

**3)**(wl

^{2})/12h

**4)**(wl

^{2})/16h

**Answer:**(wl

^{2})/16h

**Q99:-** The maximum Bending Moment due to an isolated load in a three-hinged parabolic arch (span l, rise h) having one of its hinges at the crown, occurs on either side of the crown at a distance

**Options:
**

**1)**l/4

**2)**h/4

**3)**l/(2√3)

**4)**l/(3√2)

**Answer:**l/(2√3)

**Q100:-** The equivalent length of a column of length L having both the ends hinged is

**Options:
**

**1)**2L

**2)**L

**3)**L/2

**4)**L/√2

**Answer:**L