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

**Q1:-** Which one of the following treatment is used to make the timber ﬁre resistance?

**Options:
**

**1)**Abel’s process

**2)**Empty cell process

**3)**Envelope treatment

**4)**Tarring

**Answer:**Abel’s process

**Q2:-** The dynamic modulus of elasticity of sample of concrete is compared in______.

**Options:
**

**1)**compression test

**2)**split test

**3)**tension test

**4)**ultrasonic pulse velocity test

**Answer:**ultrasonic pulse velocity test

**Q3:-** Efﬂorescence in bricks causes due to_______.

**Options:
**

**1)**excessive burning of bricks

**2)**high content of silt in brick clay

**3)**high porosity of the bricks

**4)**present of soluble salt in parent clay

**Answer:**present of soluble salt in parent clay

**Q4:-** Which of the following compounds of Portland cement reacts immediately with the water and set early?

**Options:
**

**1)**Dicalcium silicate

**2)**Tetracalcium aluminoferrite

**3)**Tricalcium aluminate

**4)**Tricalcium silicate

**Answer:**Tricalcium aluminate

**Q5:-** In the concrete mix with proportions of its ingredient 1:3:6, the actual quantity of sand per unit volume of cement, if bulking of the sand is 15% is______.

**Options:
**

**1)**3

**2)**3.45

**3)**6

**4)**4.5

**Answer:**3.45

**Q6:-** Which of the following is TRUE regarding stress-strain curve of concrete?

**Options:
**

**1)**A straight line up to the failure.

**2)**Hyperbolic up to 0.002% strain value and then a straight line up to failure.

**3)**Parabolic up to 0.002% strain value and then a straight line up to failure.

**4)**Straight line up to 0.002% strain value and then parabolic up to failure.

**Answer:**Parabolic up to 0.002% strain value and then a straight line up to failure.

**Q7:-** Which one of the following is used as a carrier in paint?

**Options:
**

**1)**Almond oil

**2)**Linseed oil

**3)**Mustard oil

**4)**Olive oil

**Answer:**Linseed oil

**Q8:-** Which of the following tests are used for testing of tiles?

**1.** breaking strength test

**2.** impact test

**3.** transverse strength test

**4.** water absorption test

**Options:
**

**1)**1 and 3 only

**2)**1, 2 and 3 only

**3)**1, 2 and 4 only

**4)**1, 2, 3 and 4

**Answer:**1, 2, 3 and 4

**Q9:-** How many bricks are required for 1 cubic meter of brick masonry work?

**Options:
**

**1)**300

**2)**500

**3)**1000

**4)**1500

**Answer:**500

**Q10:-** Which of the following mineral is responsible for the red colour in bricks?

**Options:
**

**1)**Iron oxide

**2)**Lime

**3)**Magnesia

**4)**Silica

**Answer:**Iron oxide

**Q11:-** What is the unit of measurement for steel reinforcement?

**Options:
**

**1)**Number

**2)**Kilograms

**3)**Running meter

**4)**Quintal

**Answer:**Quintal

**Q12:-** What is the weight (in kg) per meter length for 12 mm diameter steel bar?

**Options:
**

**1)**0.8

**2)**0.89

**3)**1.1

**4)**1.4

**Answer:**0.89

**Q13:-** What percentage of the total cost is added in the cost of construction for contingencies?

**Options:
**

**1)**2%

**2)**5%

**3)**1%

**4)**15%

**Answer:**5%

**Q14:-** What percentage of total cost is added to the schedule of rates of the public work department for over-head cost?

**Options:
**

**1)**10%

**2)**15%

**3)**18%

**4)**21.5%

**Answer:**21.5%

**Q15:-** For estimation of painting area of corrugated sheets, percentage increase in area above the plain area is______.

**Options:
**

**1)**10%

**2)**14%

**3)**20%

**4)**25%

**Answer:**14%

**Q16:-** Central line method for estimation is suitable for________.

**Options:
**

**1)**building having large numbers of cross wall

**2)**building having large numbers of junctions

**3)**walls having different widths

**4)**walls having same widths

**Answer:**walls having same widths

**Q17:-** Deduction at the L-junction of wall for total length of the central line is______.

**Options:
**

**1)**half the thickness of wall

**2)**no reduction

**3)**thickness of wall

**4)**twice the thickness of wall

**Answer:**No reduction

**Q18:-** Calculate the quantity of the cement required in cubic meter for 10 square meters of cement plaster 12 mm thick using cement mortar of 1:6.

**Options:
**

**1)**0.015

**2)**0.0175

**3)**0.0205

**4)**0.0325

**Answer:**0.0205

**Q19:-** Calculate the quantity of the earthworks in cubic meter for a canal embankment of 100 m long having heights of 3 m and 5 m at the two extreme edges. Top widths of the embankment are 2 m and 4 m at the two extreme edges and side slope is 2: 1. Use trapezoidal method.

**Options:
**

**1)**3500

**2)**4000

**3)**4200

**4)**4700

**Answer:**4700

**Q20:-** Calculate the primary estimate including contractor’s proﬁt in rupees for the building having a plinth area of 1,500 square meters and a rate of Rs. 2,000 per square meter.

**Options:
**

**1)**30,00,000

**2)**31,50,000

**3)**33,00,000

**4)**35,00,000

**Answer:**33,00,000

**Q21:-** 10 divisions of vernier scale are equal to 11 divisions of a main scale of each 0.1 mm. What is the least count of the vernier scale?

**Options:
**

**1)**0.009

**2)**0.01

**3)**0.1

**4)**1.1

**Answer:**0.01

**Q22:-** Which one of the following statements includes the principle of surveying?

**Options:
**

**1)**Working from higher to lower level.

**2)**Working from lower to higher level.

**3)**Working from part to whole

**4)**Working from whole to part

**Answer:**Working from whole to part

**Q23:-** Number of links in 20 m metric chain is______.

**Options:
**

**1)**80

**2)**100

**3)**120

**4)**150

**Answer:**100

**Q24:-** The hypotenuse allowance (in m) for 30 m long chain, if the slope is 1:10 is______.

**Options:
**

**1)**0.1

**2)**0.12

**3)**0.15

**4)**0.22

**Answer:**0.15

**Q25:-** What is the declination if magnetic meridian is towards the western side of the true meridian?

**Options:
**

**1)**Either negative or positive

**2)**Negative

**3)**Positive

**4)**Zero

**Answer:**Negative

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**Q26:-** Correction of length due to reduction to mean sea level is_______.

**Options:
**

**1)**directly proportional to measured length.

**2)**directly proportional to radius of the earth.

**3)**inversely proportional to measured length

**4)**inversely proportional to height above mean sea level

**Answer:**directly proportional to measured length.

**Q27:-** How much refraction correction (in m) is required for a distance of 500 m?

**Options:
**

**1)**0.0028

**2)**0.0056

**3)**5.61

**4)**2850

**Answer:**0.0028

**Q28:-** What is the purpose of conducting the resection method in the plan table surveying?

**Options:
**

**1)**To determine the location of the instrument

**2)**To plot the details

**3)**To survey hilly region

**4)**To survey plain region

**Answer:**To determine the location of the instrument

**Q29:-** What is the degree of the curve (in degree) for a radius of 573 m using chain of 20 m length?

**Options:
**

**1)**1

**2)**2

**3)**3

**4)**5

**Answer:**2

**Q30:-** Which method of contouring is most suitable for hilly terrains?

**Options:
**

**1)**Cross section method

**2)**Direct method

**3)**Square method

**4)**Tachometric method

**Answer:**Cross section method

**Q31:-** The pore water pressure in the soil sample of consolidometer test is______.

**Options:
**

**1)**maximum at bottom

**2)**maximum at center

**3)**maximum at top

**4)**minimum at center

**Answer:**maximum at center

**Q32:-** The clay deposit of thickness 10 cm and void ratio 0.5 undergoes settlement and now it’s ﬁnal void ratio is 0.2. The thickness (cm) of the settlement layer is______.

**Options:
**

**1)**1

**2)**1.5

**3)**2

**4)**2.5

**Answer:**2

**Q33:-** Which of the following represent the percentage limit of porosity of the compacted sand?

**Options:
**

**1)**5% to 15%

**2)**15% to 30%

**3)**30% to 40%

**4)**40% to 50%

**Answer:**30% to 40%

**Q34:-** In the falling head permeability test, in the duration of 3 hours the initial head of 1000 mm is dropped to 350 mm. The diameter of the stand pipe is 0.5 cm. The length and diameter of the soil specimen are 20 cm and 10 cm respectively. What is the coefﬁcient of permeability (mm/s) of the soil?

**Options:
**

**1)**86 x 10

^{-8 }

**2)**86 x 10

^{-5 }

**3)**86 x 10

^{-3 }

**4)**86 x 10

^{-5 }

**Answer:**86 x 10

^{-5}

**Q35:-** Which of the following is CORRECT to maximize the efﬁciency of all reaction turbines?

**Options:
**

**1)**Angle of absolute velocity vector at outlet is 90 degrees

**2)**Blade angle is 90 degrees at inlet

**3)**Blade angle is 90 degrees at outlet

**4)**Guide vane angle is 90 degrees

**Answer:**Angle of absolute velocity vector at outlet is 90 degrees

**Q36:-** A 1.2 m wide rectangular channel of bed slop 0.0004 and manning’s coefficient 0.01, carrying the discharge of 0.5m^{3}/s. The normal depth of the channel is _______.

**Options:
**

**1)**0.13

**2)**0.32

**3)**0.43

**4)**0.5

**Answer:**0.5

**Q37:-** Which of the following statement is **CORRECT**?

**Options:
**

**1)**Pumps connected in parallel are used to boost the head, whereas pump operating in series boosts the discharge.

**2)**Pump operating in series, boosts the head, whereas pump operating in parallel, boosts the discharge.

**3)**Pump either in parallel or series always boost only discharge.

**4)**Pump either in parallel or series always boost only head.

**Answer:**Pump operating in series, boosts the head, whereas pump operating in parallel, boosts the discharge.

**Q38:-** Draft tube at the exit of a reaction turbine used for hydroelectric project is_____.

**Options:
**

**1)**above or below the water surface, depends on unit speed of the turbine

**2)**always above the water surface

**3)**always immersed in water

**4)**may either be below or above the water surface

**Answer:**always immersed in water

**Q39:-** What is the depth of the center of pressure for the rectangular lamina which is vertically inside the water of height h?

**Options:
**

**1)**h/3

**2)**h/4

**3)**2h/3

**4)**3h/2

**Answer:**2h/3

**Q40:-** In the hydel system, a forebay is used at the junction of______.

**Options:
**

**1)**penstoke and turbine

**2)**power channel and penstock

**3)**power channel and tail race channel

**4)**tail race channel and penstock

**Answer:**power channel and penstock

**Q41:-** The motion of outgoing water from the hole made at midpoint of completely ﬁlled open cylindrical tank with water is______.

**Options:
**

**1)**forced vortex

**2)**irrotational

**3)**rotational

**4)**turbulen

**Answer:**forced vortex

**Q42:-** Which one is **CORRECT** about streamlined body?

**Options:
**

**1)**Corners are rounded off.

**2)**Separation occurs in the farthest downstream part of the body.

**3)**Skin friction is zero.

**4)**Thickness of body is equal to 1/100 of its length.

**Answer:**Separation occurs in the farthest downstream part of the body.

**Q43:-** What is the speciﬁc speed of a centrifugal pump, which has a rated capacity of 44 cumec and a head of 36 m when operated at the speed of 725 rpm?

**Options:
**

**1)**45

**2)**255

**3)**327

**4)**350

**Answer:**327

**Q44:-** On which of the following principle Bernoulli’s equation is based?

**Options:
**

**1)**Conservation of momentum

**2)**Conservation of energy

**3)**Conservation of mass

**4)**Archimedes principle

**Answer:**Conservation of energy

**Q45:-** In an irrigated ﬁeld, the net irrigation requirement is 15 cm, the application efﬁciency is 80% and water conveyance efﬁciency is 60%. What is the gross irrigation requirement (in cm)?

**Options:
**

**1)**11.25

**2)**18.75

**3)**25

**4)**31.25

**Answer:**31.25

**Q46:-** Available moisture is the difference in water content of soil between ﬁeld capacity and________.

**Options:
**

**1)**gravitational water

**2)**permanent wilting point

**3)**saturation capacity

**4)**ultimate wilting point

**Answer:**permanent wilting point

**Q47:-** Right of way is the summation of the width of_______.

**Options:
**

**1)**carriage way and shoulder

**2)**carriage way, shoulder and road margins

**3)**carriage way and road margins

**4)**road margins and shoulder

**Answer:**carriage way, shoulder and road margins

**Q48:-** Gradient on a highway is 1 in 20. Radius of the curve is 200 m. After grade compensation the grade to be provided should not be less than 4%. Calculate the grade compensation.

**Options:
**

**1)**0.38%

**2)**1.15%

**3)**4.63%

**4)**5%

**Answer:**0.38%

**Q49:-** Which one of the following is most important parameter for the removal of discrete particles in design of continuous ﬂow rectangular sedimentation tank?

**Options:
**

**1)**Depth of tank

**2)**Length of tank

**3)**Surface overﬂow rate

**4)**Temperature of water to be treated

**Answer:**Surface overﬂow rate

**Q50:-** The most efﬁcient method to conserve energy in the form of oil and gases is_______.

**Options:
**

**1)**combusting

**2)**ﬂuidized-bed incineration

**3)**incineration with heat recovery

**4)**pyrolysis

**Answer:**pyrolysis

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**Q51:-** Dead load comprises of:-

**Options:
**

**1)**Permanently attached loads

**2)**Temporarily attached loads

**3)**Permanent as well as temporary loads

**4)**Snow load

**Answer:**Permanently attached loads

**Q52:-** Which of the following statements is true?

**1.** Impact loads are equal to the sum of the magnitude of the loads actually caused and the magnitude of the loads had they been dead loads.

**2.** Impact loads are equal to the difference between the above mentioned entities.

**Options:
**

**1)**Only A

**2)**Only B

**3)**Both A and B

**4)**Neither A nor B

**Answer:**Only B

**Q53:-** What will be the value of reduction factor R1 if value of At is given to be 500ft^{2}?

**Options:
**

**1)**0.5

**2)**0.6

**3)**0.7

**4)**0.8

**Answer:**0.7

**Q54:-** If we use a link support in a structural system, then how many unknowns would we have?

**Options:
**

**1)**0

**2)**1

**3)**2

**4)**None of these

**Answer:**1

**Q55:-** Which of the following statements is true?

**1.** For instability, at least one joint of the structure should be able to displace without causing change in length of all the members.

**2. **For instability, at least one joint of the structure should be able to displace without causing change in length of at least one of the members.

**Options:
**

**1)**Only A

**2)**Only B

**3)**Both A and B

**4)**None of these

**Answer:**Only B

**Q56:-** If all the reactions acting on a planar system are concurrent in nature, then the system is:-

**Options:
**

**1)**Can’t say

**2)**Essentially stable

**3)**Essentially unstable

**4)**None of these

**Answer:**Essentially unstable

**Q57:-** In the following questions, j represent no. of joints and r represents no. of external forces. If a structure has 2j – r no. of members, then it will be:-

**Options:
**

**1)**Stable

**2)**Unstable

**3)**Depends upon structure

**4)**depends upon magnitude of load

**Answer:**Depends upon structure

**Q58:-** What is the function of portal in bridge trusses?

**Options:
**

**1)**To resist lateral forces

**2)**To resist horizontal forces

**3)**To provide additional stability

**4)**To allow thermal expansion

**Answer:**To provide additional stability

**Q59:-** Which of the following statements is true?

**1.** Simple trusses consist entirely of triangle.

**2.** It can consists of any other shaped intermediate parts, as long as it is stable.

**Options:
**

**1)**Only A

**2)**Only B

**3)**Both A and B

**4)**Neither A nor B

**Answer:**Both A and B

**Q60:-** Given that J is no. of joints. B and R are no. of members and no. of reactions. If B = 5, R = 3 and J = 4, then the truss is:-

**Options:
**

**1)**Statically determinate

**2)**Statically indeterminate

**3)**Stable

**4)**Unstable

**Answer:**Statically determinate

**Q61:-** Which of the following is most common alternative to cement in concrete?

**Options:
**

**1)**Slag

**2)**Fly ash

**3)**Asphalt

**4)**Lime

**Answer:**Asphalt

**Q62:-** is added to make white concrete.

**Options:
**

**1)**Fly ash

**2)**Metakaolin

**3)**Rise husk

**4)**Pigments

**Answer:**Metakaolin

**Q63:-** Which process comes after batching in manufacture process of concrete?

**Options:
**

**1)**Transportation

**2)**Placing

**3)**Mixing

**4)**Compacting

**Answer:**Mixing

**Q64:-** In small works, concrete is transported using:

**Options:
**

**1)**Conveyer belts

**2)**Pumps

**3)**Pans

**4)**Buckets

**Answer:**Pans

**Q65:-** Steam curing of concrete is adopted for:

**Options:
**

**1)**Precast structures

**2)**Columns

**3)**Beams

**4)**Walls

**Answer:**Precast structures

**Q66:-** How does the strength of concrete differ with age of concrete?

**Options:
**

**1)**Increases

**2)**Decreases

**3)**No effect

**4)**Increases, then decreases

**Answer:**Increases

**Q67:-** Bleeding is good to an extent if it occurs when concrete is:

**Options:
**

**1)**Transported

**2)**Mixed

**3)**Plastic

**4)**Plastic

**Answer:**Placed

**Q68:-** The figure given below represents a:

**Options:
**

**1)**Low slump of concrete

**2)**Normal slump of concrete

**3)**Shear slump of concrete

**4)**Collapse slump of concrete

**Answer:**Collapse slump of concrete

**Q69:-** The size of commonly used specimen for compression test of concrete is:

**Options:
**

**1)**50 × 30 mm

**2)**150 x 150 x 150 mm

**3)**150 x 50 x 50 mm

**4)**150 × 150 mm

**Answer:**150 x 150 x 150 mm

**Q70:-** is used to ensure that the thickness of plastering is uniform.

**Options:
**

**1)**Bull point

**2)**Pivot point

**3)**Bull mark

**4)**Bench mark

**Answer:**Bull mark

**Q71:-** are used to press mortar and spread it uniformly.

**Options:
**

**1)**Trowel

**2)**Aluminium rod

**3)**Floats

**4)**Brush

**Answer:**Floats

**Q72:-** The ratio of the allowable bond stress in deformed bars to that of plain bars is about:-

**Options:
**

**1)**1.2

**2)**1.3

**3)**1.8

**4)**None of these

**Answer:**None of these

**Q73:-** For which of the following grades ordinary concrete is not used?

**Options:
**

**1)**M100

**2)**M400

**3)**M200

**4)**M250

**Answer:**M400

**Q74:-** The ratio of various ingredients (cement, sand, aggregates) in concrete of grade M 200 is: A. 1:2:4

**1.** 1:3:6

**2.** 1: 1.5: 3

**3. **1:1:2

**Options:
**

**1)**Only A

**2)**Only B

**3)**Both A and B

**4)**None of these

**Answer:**None of these

**Q75:-** What do we need to do while designing an air entrained concrete?

**Options:
**

**1)**water cement ratio is to be reduced

**2)**proportion of aggregates is to be reduced

**3)**an allowance for the entrained air is made

**4)**All option are correct

**Answer:**All option are correct

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**Q76:-** If the effective plan area of a warehouse is 54 sq. m, and maximum height of piles permitted is 270 cm, then what is the number of cement bags that can be stored?

**Options:
**

**1)**200

**2)**2000

**3)**24000

**4)**2700

**Answer:**2700

**Q77:-** Which of the following is the results of proper batching of concrete?

**A.** Economy

**B.** Durability

**C.** Workability

**D.** Strength

**Options:
**

**1)**A and B Only

**2)**A, B, and C Only

**3)**A and D only

**4)**A, B, C and D

**Answer:**A, B, C and D

**Q78:-** The process of mixing, transporting, placing and compacting concrete using Ordinary Portland cement should not take more than how much time?

**Options:
**

**1)**30 minutes

**2)**40 minutes

**3)**75 minutes

**4)**None of these

**Answer:**30 minutes

**Q79:-** PSC stands for:

**Options:
**

**1)**Post-Stressed Concrete

**2)**Post-Strained Concrete

**3)**Pre-Stressed Concrete

**4)**Pre-strained Concrete

**Answer:**Pre-Stressed Concrete

**Q80:-** Which of the below structure doesn’t require Pre Stressed Concrete?

**Options:
**

**1)**Bridge

**2)**Arch

**3)**Dam

**4)**Silos

**Answer:**Arch

**Q81:-** Which of the following is the minimum thickness of a ﬂat slab that is taken into consideration?

**Options:
**

**1)**13 cm

**2)**L/32 for end panels without drops

**3)**L/36 for end panels without drops

**4)**All option are correct

**Answer:**All option are correct

**Q82:-** If W is the load on a circular slab of radius R, the maximum circumferential moment at the center of the slab is

**A)** WR^{2} / 16

**B)** 2WR^{2} / 16

**C)** 3WR^{2} / 16

**Options:
**

**1)**A Only

**2)**B Only

**3)**C Only

**4)**Zero

**Answer:**C Only

**Q83:-** The ratio of the breadth to effective depth of a beam is kept

**Options:
**

**1)**0.25

**2)**0.5

**3)**0.7

**4)**0.75

**Answer:**0.5

**Q84:-** A ribbed slab is provided for which of the following?

**Options:
**

**1)**a plain ceiling

**2)**thermal insulation

**3)**acoustic insulation

**4)**All option are correct

**Answer:**All option are correct

**Q85:-** The thickness of the ﬂange of a Tee beam of a ribbed slab is assumed as

**Options:
**

**1)**width of the rib

**2)**depth of the rib

**3)**thickness of the concrete topping

**4)**half the thickness of the rib

**Answer:**thickness of the concrete topping

**Q86:-** Which of the following statements is true?

**Options:
**

**1)**A pile is a slender member which transfers the load through its lower end on a strong strata

**2)**A pile is a slender member which transfers its load to the surrounding soil

**3)**A pile is a slender member which transfers its load by friction

**4)**A pile is a cylindrical body of concrete which transfers the load at a depth greater than its width

**Answer:**A pile is a slender member which transfers its load to the surrounding soil

**Q87:-** According to I.S. 456-1978, the thickness of reinforced concrete footing on piles at its edges is kept less than

**Options:
**

**1)**5 cm

**2)**10 cm

**3)**15 cm

**4)**20 cm

**Answer:**15 cm

**Q88:-** If **q** is the punching shear resistance per unit area **a**, is the side of a square footing for a column of side **b**, carrying a weight W including the weight of the footing, the depth (D) of the footing from punching shear consideration is

**A)** D = W(a-b) / 4a^{2}bq

**B)** D = W(a^{2}-b^{2}) / 4a^{2}bq

**C)** D = W(a^{2}-b^{2}) / 8a^{2}bq

**D)** D = W(a^{2}-b^{2}) / 4abq

**Options:
**

**1)**A Only

**2)**B Only

**3)**C Only

**4)**D Only

**Answer:**B Only

**Q89:-** The tangential component of stress on an plane inclined θ^{o} to the direction of the force, may be obtained by multiplying the normal stress by______.

**A)** Sin θ

**B)** Cos θ

**C)** tan θ

**D)** Sin^{2}θ

**Options:
**

**1)**A Only

**2)**B Only

**3)**C Only

**4)**D Only

**Answer:**D Only

**Q90:-** Shear strain energy theory for the failure of a material at elastic limit is due to

**Options:
**

**1)**Rankine

**2)**Guest or Trecas

**3)**St.Venant

**4)**Von Mises

**Answer:**Von Mises

**Q91:-** Pick up the indeterminate structure from those shown in the figure given below.

**Options:
**

**1)**Figure (i)

**2)**Figure (ii)

**3)**Figure (iii)

**4)**Figure (iv)

**Answer:**Figure (iii)

**Q92:-** Beams composed of more than one material, rigidly connected together so as to behave as one piece, are known as

**Options:
**

**1)**Compound beams

**2)**Indeterminate beams

**3)**Determinate beams

**4)**Composite beams

**Answer:**Composite beams

**Q93:-** Poisson’s ratio is μ deﬁned as the ratio of

**Options:
**

**1)**axial strain to transverse strain

**2)**axial strain to shear strain

**3)**shear strain to axial strain

**4)**None of these

**Answer:**None of these

**Q94:-** Among the following identify the dimensionless quantity.

**Options:
**

**1)**Shear force

**2)**Stress

**3)**Strain

**4)**Modulus of elasticity

**Answer:**Strain

**Q95:-** Identify the correct statement.

**Options:
**

**1)**Hooke’s law is valid up to Elastic limit

**2)**Hooke’s law is valid up to Yield point

**3)**Hooke’s law is valid up to Limit of proportionality

**4)**Hooke’s law is valid up to Limit of proportionality

**Answer:**Hooke’s law is valid up to Limit of proportionality

**Q96:-** For an isotropic, homogeneous and elastic material obeying Hook’s law, number of independent elastic constants is

**Options:
**

**1)**3

**2)**1

**3)**9

**4)**None of these

**Answer:**None of these

**Q97:-** The angle between the principle plane and the plane of maximum shear is

**Options:
**

**1)**90 degree

**2)**135 degree

**3)**60 degree

**4)**None of these

**Answer:**None of these

**Q98:-** The state of pure shear stress is produced by

**Options:
**

**1)**tension in one direction and equal compression in perpendicular direction

**2)**equal tension in two directions at right angles

**3)**equal compression in two directions at right angles

**4)**None of these

**Answer:**tension in one direction and equal compression in perpendicular direction

**Q99:-** When the length of a tension member is too long

**Options:
**

**1)**a wire rope is used

**2)**a rod is used

**3)**a bar is used

**4)**a single angle is used

**Answer:**a bar is used

**Q100:-** The allowable stress in axial tension is generally kept less if thickness of the member is more than

**Options:
**

**1)**10 mm

**2)**12 mm

**3)**15 mm

**4)**20 mm

**Answer:**20 mm