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Thursday, June 13, 2013

Strength of Materials (Practice Test)

1. Strain is defined as the ratio of
(a) change in volume to original volume
(b) change in length to original length
(c) change in cross-sectional area to original cross-sectional area
(d) any one of the above
(e) none of the above.

2. Hooke's law holds good upto
(a) yield point
(b) limit of proportionality
(c) breaking point
(d) elastic limit
(e) plastic limit.

3. Young's modulus is defined as the ratio of
(a) volumetric stress and volumetric strain
(b) lateral stress and lateral strain
(c) longitudinal stress and longitudinal strain
(d) shear stress to shear strain
(e) longitudinal stress and lateral strain.

4. The unit of Young's modulus is
(a) mm/mm
(b) kg/cm
(c) kg
(d) kg/cm2
(e) kg cm2.

5. Deformation per unit length in the direction of force is known as
(a) strain
(b) lateral strain
(c) linear strain
(d) linear stress
(e) unit strain.

6. It equal and opposite forces applied to a body tend to elongate it, the stress so
produced is called
(a) internal resistance
(b) tensile stress
(c) transverse stress
(d) compressive stress
(e) working stress.

7. The materials having same elastic properties in all directions are called
(a) ideal materials
(b) uniform materials
(c) isotropic materials
(d) practical materials
(e) elastic materials.

8. A thin mild steel wire is loaded by adding loads in equal increments till it breaks. The
extensions noted with increasing loads will behave as under
(a) uniform throughout
(b) increase uniformly
(c) first increase and then decrease
(d) increase uniformly first and then in-crease rapidly
(e) increase rapidly first and then uniformly.

9. Modulus of rigidity is defined as the ratio of
(a) longitudinal stress and longitudinal strain
(b) volumetric stress and volumetric strain
(c) lateral stress and lateral strain
(d) shear stress and shear strain
(e) linear stress and lateral strain.

10. If the radius of wire stretched by a load is doubled, then its Young's modulus will be
(a) doubled
(b) halved
(c) become four times
(d) become one-fourth
(e) remain unaffected.

Answers:

  1. d
  2. b
  3. c
  4. d
  5. c
  6. b
  7. c
  8. d
  9. d
  10. e

Building Construction (Masonry)

Q.1. Stone masonry is
(a) very cheap
(b) cheap
(c) costly
(d) extremely costly

Q.2. Brick masonry is
(a) cheap
(b) moderately costly
(c) costly
(d) very costly

Q.3. Size of modular bricks is
(a) 19 x 9 x 9 cm
(b) 20 x 10 x 10 cm
(c) 22 x 11 x 7.5 cm
(d) 23 x 12 x 8.5 cm

Q.4. Size of conventional brick is
(a) 19 x 9 x 9 cm
(b) 20 x 10 x 10 cm
(c) 22 x 11 x 7.5 cm
(d) 23 x 12 x 8.5 cm

Q.5. The most commonly bond in brick masonry is
(a) English bond
(b) Flemish bond
(c) Stretcher bond
(d) Header bond

Q.6. The bond which contains alternate courses of headers and stretchers is called
(a) English bond
(b) Flemish bond
(c) Stretcher bond
(d) Header bond

Q.7. In English bond, in each header course a ___ is placed next to quoin header.
(a) king closer
(b) half bat
(c) queen closer
(d) none of these

Q.8. In English bond stretchers overlaps upto ___ of their length over the header course.
(a) 10%
(b) 25%
(c) 50%
(d) 75%

Q.9. Alternate headers and stretchers are provided in each course in
(a) English bond
(b) Flemish bond
(c) Stretcher bond
(d) Header bond

Q.10. Every header is placed centrally over the stretcher below it in
(a) English bond
(b) Flemish bond
(c) Stretcher bond
(d) Header bond

Answers:
1. c
2. b
3. a
4. c
5. a
6. a
7. c
8. b
9. b
10. b

Saturday, May 11, 2013

Building Construction (Masonry)

Q.1. In Ashlar fine masonry
(a) height of stones used is never less than their breadth
(b) length of stones is never less than twice their height
(c) both (a) and (b)
(d) neither (a) nor (b)

Q.2. In Ashlar chamfered masonry stones are chamfered on the exposed face at
(a) 300
(b) 450
(c) 600
(d) none of these

Q.3. In the above question, stones are chamfered to a width of
(a) 10 mm
(b) 25 mm
(c) 50 mm
(d) 100 mm

Q.4. Ashlar facing masonry contains an Ashlar facing and backing of
(a) rubble masonry
(b) brick masonry
(c) either (a) or (b)
(d) neither (a) nor (b)

Q.5. Strength of stone masonry is
(a) Excellent
(b) more than that of brick masonry
(c) both (a) and (b)
(d) neither (a) nor (b)

Q.6. Damp resistance of stone masonry is
(a) low
(b) medium
(c) high
(d) very high

Q.7. Chemical resistance of stone masonry is
(a) very poor
(b) poor
(c) good
(d) excellent

Q.8. Chemical resistance of brick masonry is
(a) very poor
(b) poor
(c) good
(d) very good

Q.9. Fire resistance of stone masonry is
(a) very low
(b) low
(c) moderate
(d) very high

Q.10. Fire resistance of brick masonry is
(a) very low
(b) low
(c) high
(d) extremely high

Answers:
1. c
2. b
3. b
4. c
5. c
6. c
7. c
8. b
9. c
10. c

Friday, May 3, 2013

Building Construction (Masonry)

Q.1. The projecting course of stone or brick masonry at ground floor level is called
(a) DPC
(b) plinth
(c) lintel
(d) jamb

Q.2. An impervious course laid at plinth level to prevent rise of water from foundations to superstructure by capillary action is called
(a) DPC
(b) plinth course
(c) jamb
(d) sill

Q.3. Horizontal member of RCC etc.. provided above opening is called
(a) jamb
(b) sill
(c) gable
(d) lintel

Q.4. Choose the incorrect statement.
(a) In rubble masonry the stones received from query are used without dressing.
(b) uncoursed masonry is cheapest and weak type of masonry
(c) random rubble masonry is used for low cost housing.
(d) coursed rubble masonry is inferior type of masonry

Q.5. In random rubble masonry
(a) course height is uniform
(b) size of stones are not uniform
(c) through stones are provided at frequent intervals
(d) all the above

Q.6. In coursed rubble masonry
(a) height is uniform
(b) joints are uniform
(c) through stones are provided at frequent intervals
(d) all of the above

Q.7. In coursed rubble masonry, the thickness of joints generally does not exceed
(a) 5 mm
(b) 10 mm
(c) 20 mm
(d) 40 mm

Q.8. No mortar is used in
(a) random rubble masonry
(b) coursed rubble masonry
(c) dry rubble masonry
(d) all these

Q.9. Ashlar masonry
(a) is costly
(b) consists of stones neatly dressed
(c) requires skilled labour
(d) all these

Q.10. In Ashlar fine masonry
(a) stones are dressed true and square on all sides
(b) height of course never less than 30 cm
(c) thickness of joints should not exceed 3 mm
(d) all the above

Answers:
1. b
2. a
3. d
4. d
5. d
6. d
7. b
8. c
9. d
10. d

Friday, April 26, 2013

Mechanical - Practice Test

1. A hollow shaft of same cross-section area as solid shaft transmits
a. Same torque
b. Less torque
c. More torque
d. Unpredictable

2. In a cantilever beam, maximum deflection occurs at where
a. Bending moment is zero
b. Bending moment is maximum
c. Shear force is zero
d. Slope is zero

3. In a rectangular beam, when width, depth and length are doubled, the bending stress will be
a. Shall remain unchanged
b. Shall be doubled
c. Shall become ¼ th
d. Shall be halved

4. In an I section beam, the bending moment is resisted mainly by
a. Flanges only
b. Web only
c. Both by flanges and web
d. None of the above

5. In internal combustion (I.C.) engines, combustion of fuel takes place in
a. Outside the cylinder
b. Inside the cylinder
c. Not in the cylinder
d. None of the above

6. Power available at the shaft of an I.C engine is known is
a. Brake horse power
b. Indicated horse power
c. Net indicated horse power
d. Pumping power

7. In internal combustion engine piston the maximum temperature occurs at
a. Ring section
b. Gungeon pin
c. Bottom centre
d. Top centre

8. A two-stroke engine is generally preferred to a four-stroke engine because
a. It offers low fuel consumption
b. It gives lesser shocks and vibrations
c. It can be easily started
d. It has smaller size for the same output.

9. During idling process, a petrol engine requires
a. Lean mixture
b. Rich mixture
c. Variable mixture
d. None of above

10. Cavitation in a pipe will begin when
a. Pressure at any location reaches pressure equal to the saturated vapour pressure of liquid
b. Pressure becomes more than critical pressure
c. Flow is increased
d. Pressure is increased

Answers:
1. b
2. a
3. c
4. b
5. b
6. a
7. a
8. d
9. a
10. a

Building Construction (Masonry)

Q.1.     The lengthy face of the brick is known as
(a)        face
(b)        king closer
(c)        queen closer
(d)        stretcher

Q.2.     Horizontal layer of bricks or stones is called
(a)        bed
(b)        course
(c)        quoin
(d)        none of these

Q.3.     External corners of the wall are called
(a)        frogs
(b)        bats
(c)        heartings
(d)        quoins

Q.4.     The part of the brick obtained by cutting the triangular corner portion from the middle points of width and length of brick is called
(a)        king closer
(b)        queen closer
(c)        stretcher
(d)        none of these

Q.5.     A king closer is a
(a)        full brick
(b)        3/4 brick
(c)        longitudinally 1/2 brick
(d)        crosswise 1/2 brick       (IES 2000)

Q.6.     A part of a brick obtained by cutting a brick longitudinally into two equal parts is called
(a)        king closer
(b)        queen closer
(c)        stretcher
(d)        bat

Q.7.     The brick half piece to its length is called
(a)        king closer
(b)        queen closer
(c)        stretcher
(d)        half bat

Q.8.     The original layers of stones along witch they have formed is called
(a)        bed
(b)        through bed
(c)        natural bed
(d)        none of these

Q.9.     A single stone which is fixed at regular intervals joining face and back is called
(a)        frog
(b)        through stone
(c)        natural stone
(d)        plinth course

Q.10.   Pieces of stones are called
(a)        ballast
(b)        spalls
(c)        crushed stone
(d)        none of these


Answers:
  1. d
  2. b
  3. d
  4. a
  5. b
  6. b
  7. d
  8. c
  9. b
  10. b

Friday, April 19, 2013

Building Construction (Foundation)

Q.1.     If a very important building is to be constructed on black cotton soil then ___ foundation should be used.
(a)        spread footing
(b)        strip footing
(c)        raft
(d)        grillage

Q.2.     A foundation may fail due to
(a)        change of strata
(b)        differential loading system
(c)        unsymmetrical loading system
(d)        all the above

Q.3.     A foundation fails if
(a)        sub-soil water level is dropped
(b)        there is a lateral pressure on the structure
(c)        there is unequal settlement of masonry
(d)        all these

Q.4.     In India __ % area is covered with black cotton soil.
(a)        10
(b)        20
(c)        30
(d)        40

Q.5.     Black cotton soil shows
(a)        high volumetric changes when subjected to moisture variation
(b)        swelling when come in contact with moisture
(c)        shrinking when moisture evaporates
(d)        all these

Q.6.     In black cotton soil, due to alternate swelling and shrinking in wet and dry cycles of season
(a)        differential movement of ground occurs
(b)        tensile and shear stresses occur in foundation
(c)        generates cracks in super structure
(d)        all these

Q.7.     In black cotton soils, safe bearing capacity of the soils is taken as
(a)        5 kg/cm2
(b)        2.5 to 3.0 kg/cm2
(c)        1 kg/cm2 to 1.5 kg/cm2
(d)        0.50 to 0.75 kg/cm2

Q.8.     In black cotton soil, the minimum depth of foundation should be
(a)        4 m below ground level
(b)        2 m below ground level
(c)        1 m below ground level
(d)        0.5 m below ground level

Q.9.     In black cotton soil which footing is suitable?
(a)        spread footing
(b)        RCC footing
(c)        both (a) and (b)
(d)        neither (a) nor (b)

Q.10.   In black cotton soil, the bottom of foundation trench should be filled with
(a)        sand
(b)        moorum
(c)        broken stone
(d)        any of these

Answers
  1. c
  2. d
  3. d
  4. b
  5. d
  6. d
  7. d
  8. b
  9. b
  10. d