McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Civil Engineering .
| 301. |
The effective length of a compression member of length L held in position at both ends but not restrained in direction, is |
| A. | L |
| B. | 0.67 L |
| C. | 0.85 L |
| D. | 1.5 L |
| Answer» A. L | |
| 302. |
The live load for a sloping roof with slope 15°, where access is not provided to roof, is taken as |
| A. | 0.65 kN/m² |
| B. | 0.75 kN/m² |
| C. | 1.35 kN/m² |
| D. | 1.50 kN/m² |
| Answer» A. 0.65 kN/m² | |
| 303. |
Pick up the correct statement from the following: |
| A. | Dead load includes self-weight of the structure and super-imposed loads permanently attached to the structure |
| B. | Dead loads change their positions and vary in magnitude |
| C. | Dead loads are known in the beginning of the design |
| D. | None of these |
| Answer» A. Dead load includes self-weight of the structure and super-imposed loads permanently attached to the structure | |
| 304. |
If N is the number of rivets in the joint, the strength of a riveted joint against shearing of rivets, is given by |
| A. | Ps = N d2 × Ps |
| B. | Ps = N × (d × t × ps) |
| C. | Ps = N × (p - d) × t × Ps |
| D. | Ps = N × (P + d) × t × ps |
| Answer» A. Ps = N d2 × Ps | |
| 305. |
The sway bracing is designed to transfer |
| A. | 2Vi % of the top panel wind load to bottom bracing |
| B. | 10% of the top panel wind load to bottombracing |
| C. | 25% of the top panel wind load to bottombracing |
| D. | 50% of the top panel wind load to bottom bracing |
| Answer» D. 50% of the top panel wind load to bottom bracing | |
| 306. |
Column footing is provided |
| A. | To spread the column load over a larger area |
| B. | To ensure that intensity of bearing pressure between the column footing and soil does not exceed permissible bearing capacity of the soil |
| C. | To distribute the column load over soil through the column footing |
| D. | All the above |
| Answer» D. All the above | |
| 307. |
Rolled steel beams are designated by Indian Standard series and its |
| A. | Weight per metre and depth of itssection |
| B. | Depth of section and weight per metre |
| C. | Width of flange and weight per metre |
| D. | Weight per metre and flange width |
| Answer» B. Depth of section and weight per metre | |
| 308. |
When plates are exposed to weather, tacking rivets are provided at a pitch in line not exceeding (where t is the thickness of the outside plate). |
| A. | 8 t |
| B. | 16 t |
| C. | 24 t |
| D. | 32 t |
| Answer» B. 16 t | |
| 309. |
For a compression member with double angle section, which of the following section will give larger value of minimum radius of gyration? |
| A. | Equal angles back to back |
| B. | Unequal legged angles with long legs back to back |
| C. | Unequal legged angles with short legs back to back |
| D. | Both (B) and (C) |
| Answer» B. Unequal legged angles with long legs back to back | |
| 310. |
Pick up the correct statement from the following: |
| A. | The minimum pitch should not be less than 2.5 times the gross diameter of the river |
| B. | The minimum pitch should not be less than 12 times the gross diameter of therivet |
| C. | The maximum pitch should not exceed 10 times the thickness or 150 mm whichever is less in compression |
| D. | All the above |
| Answer» A. The minimum pitch should not be less than 2.5 times the gross diameter of the river | |
| 311. |
Pitch of tacking rivets, when double angles connected back to back and acting as tension members should not be more than |
| A. | 500 mm |
| B. | 600 mm |
| C. | 1000 mm |
| D. | 300 mm |
| Answer» C. 1000 mm | |
| 312. |
For a steel grillage footing to support two unequal column loads |
| A. | Line of action of the resultant of two column loads, is made to coincide with the centre of gravity of the base of the footing |
| B. | Trapezoidal shape is used for the base footing |
| C. | Projections of beams on either side in lower tier are such that bending momentsunder columns are equal |
| D. | All the above |
| Answer» D. All the above | |
| 313. |
In a tension member if one or more than one rivet holes are off the line, the failure of the member depends upon: |
| A. | Pitch |
| B. | Gauge |
| C. | Diameter of the rivet holes |
| D. | All the above |
| Answer» D. All the above | |
| 314. |
The effective length of a compression member of length L, held in position and restrained in direction at both ends, is |
| A. | L |
| B. | 0.67 L |
| C. | 0.85 L |
| D. | 1.5 L |
| Answer» B. 0.67 L | |
| 315. |
By providing sufficient edge distance, which of the following failures of riveted joint can be avoided? |
| A. | Tension failure of the plate |
| B. | Shear failure of the rivet |
| C. | Shear failure of the plate |
| D. | Crushing failure of the rivet |
| Answer» C. Shear failure of the plate | |
| 316. |
The maximum tensile and compressive bending stress in extreme fibres of rolled I-sections and channels on the effective section, is |
| A. | 1500 kg/cm2 |
| B. | 1420 kg/cm2 |
| C. | 1650 kg/cm2 |
| D. | 2285 kg/cm2 |
| Answer» C. 1650 kg/cm2 | |
| 317. |
When the ratio of the moment M to axial load P is greater than L/6, the resultant of the compressive bearing pressure which acts at a distance Y from one side, is given by |
| A. | y = (L/3) - (M/P) |
| B. | y = (L/2) - (P/M) |
| C. | y = (L/2) + (M/P) |
| D. | y = (L/3) + (M/P) |
| Answer» B. y = (L/2) - (P/M) | |
| 318. |
The safe working pressure for a spherical vessel 1.5 m diameter and having 1.5 cm thick wall not to exceed tensile stress 50kg/cm2, is |
| A. | 16 kg/cm2 |
| B. | 18 kg/cm2 |
| C. | 20 kg/cm2 |
| D. | 22 kg/cm2 |
| Answer» C. 20 kg/cm2 | |
| 319. |
Battening is preferable when the
|
| A. | Only (i) |
| B. | Only (iii) |
| C. | (i) and (ii) |
| D. | (ii) and (iii) |
| Answer» C. (i) and (ii) | |
| 320. |
For a steel member of slenderness ratio 350, the allowable stress is 76 kg/cm2 if it is |
| A. | HTW grade of thickness exceeding 32 mm |
| B. | HT grade of thickness exceeding 45 mm |
| C. | HT grade of thickness not exceeding 45 mm |
| D. | All the above |
| Answer» D. All the above | |
| 321. |
Bearing stiffener in a plate girder is used to |
| A. | Transfer the load from the top flange to the bottomone |
| B. | Prevent buckling of web |
| C. | Decrease the effective depth of web |
| D. | Prevent excessive deflection |
| Answer» B. Prevent buckling of web | |
| 322. |
The central deflection of a simply supported steel beam of length L with a concentrated load W at the centre, is |
| A. | WL3/3EI |
| B. | WL4/3EI |
| C. | WL3/48EI |
| D. | 5WL4/384EI |
| Answer» C. WL3/48EI | |
| 323. |
If d is the distance between the flange angles, |
| A. | Vertical stiffeners are provided in steel plate girders if the web is less thand/85 |
| B. | Vertical stiffeners are provided in high tensile steel plate girders if the web is lessthan d/175 |
| C. | Horizontal stiffeners are provided in steel plate girders if the web is less thand/200 |
| D. | All the above |
| Answer» D. All the above | |
| 324. |
In case horizontal stiffeners are not used, the distance between vertical legs of flange angles at the top and bottom of a plate girder, is known as |
| A. | Overall depth |
| B. | Clear depth |
| C. | Effective depth |
| D. | None of these |
| Answer» B. Clear depth | |
| 325. |
Pick up the correct statement from the following: |
| A. | The steel beams placed in plain cement concrete, are known as reinforcedbeams |
| B. | The filler joists are generally continuous over three-supports only |
| C. | Continuous fillers are connected to main beams by means of cleat angles |
| D. | Continuous fillers are supported by main steelbeams |
| Answer» D. Continuous fillers are supported by main steelbeams | |
| 326. |
The diameter of base of conical flare of a steel stack is ( d is the diameter of the cylindrical part) |
| A. | Less than d |
| B. | Equal to d |
| C. | More than d |
| D. | Any of the above |
| Answer» C. More than d | |
| 327. |
The effective length of a compression member of length L held in position and restrained in direction at one end and effectively restrained in direction but not held in position at the other end, is |
| A. | L |
| B. | 0.67 L |
| C. | 0.85 L |
| D. | 1.5 L |
| Answer» A. L | |
| 328. |
Working shear stress on the gross area of a rivet as recommended by Indian Standards, is |
| A. | 785 kg/cm2 |
| B. | 1025 kg/cm2 |
| C. | 2360 kg/cm2 |
| D. | None of these |
| Answer» B. 1025 kg/cm2 | |
| 329. |
The critical load for a column of length I hinged at both ends and having flexural rigidity El, is given by |
| A. | Pc = ²EI/l² |
| B. | Pc = /l² |
| C. | Pc = /I² |
| D. | None of these |
| Answer» A. Pc = ²EI/l² | |
| 330. |
Length of an outstanding leg of a vertical stiffener, may be taken equal to |
| A. | 1/10th of clear depth of the girder plus 15mm |
| B. | 1/20th of clear depth of the girder plus 20mm |
| C. | 1/25th of clear depth of the girder plus 25mm |
| D. | 1/30th of clear depth of the girder plus 50mm |
| Answer» C. 1/25th of clear depth of the girder plus 25mm | |
| 331. |
The economical depth d of a web plate in which allowable bearing stress is fb, and the maximum bending moment is M, as suggested by Rawater and Clark, is |
| A. | d = (M/fb) |
| B. | d = 1.5 (M/fb) |
| C. | d = 2.5 (M/fb) |
| D. | d = 4.5 (M/fb) |
| Answer» D. d = 4.5 (M/fb) | |
| 332. |
Minimum pitch of the rivets shall not be less than (Where d is gross diameter of rivet) |
| A. | 1.5 d |
| B. | 2.0 d |
| C. | 2.5 d |
| D. | 3.0 d |
| Answer» C. 2.5 d | |
| 333. |
For steel members exposed to weather and not accessible for repainting, the thickness of steel should not be less than |
| A. | 4.5 mm |
| B. | 6 mm |
| C. | 8 mm |
| D. | 10 mm |
| Answer» C. 8 mm | |
| 334. |
The slenderness ratio of a column supported throughout its length by a masonry wall is |
| A. | Zero |
| B. | 10 |
| C. | 100 |
| D. | Infinity |
| Answer» A. Zero | |
| 335. |
Outstanding length of a compression member consisting of a channel, is measured as |
| A. | Half of the nominal width |
| B. | Nominal width of the section |
| C. | From the edge to the first row ofrivets |
| D. | None of these |
| Answer» B. Nominal width of the section | |
| 336. |
The side thrust T on the tie rods provided at the end beam of jack arch of rise R, is calculated from the formula |
| A. | T = WL/4R |
| B. | T = WR/8L |
| C. | T = WL/8R |
| D. | T = WL/2R |
| Answer» C. T = WL/8R | |
| 337. |
Intermediate vertical stiffeners in a plate girder need be provided if the depth of web exceeds |
| A. | 50 t |
| B. | 85 t |
| C. | 200 t |
| D. | 250 tt |
| Answer» B. 85 t | |
| 338. |
For the buildings having a low permeability, the internal wind pressure acting normal to the wall and roof surfaces is taken as (Where p is basic wind pressure) |
| A. | Zero |
| B. | ±0.2 p |
| C. | ± 0.5 p |
| D. | ±0.7 p |
| Answer» B. ±0.2 p | |
| 339. |
If is the maximum allowable bending stress in a tension member whose radius of gyration is and depth is 2y, the required cross sectional area is given by |
| A. | A = My/fr² |
| B. | A = My²/fr² |
| C. | A = My/fr |
| D. | A = My/f²r² |
| Answer» A. A = My/fr² | |
| 340. |
The load on a lintel is assumed as uniformly distributed if the height of the masonry above it, is upto a height of |
| A. | The effective span |
| B. | 1.25 times the effective span |
| C. | 1.50 times the effective span |
| D. | 2.0 times the effective span |
| Answer» B. 1.25 times the effective span | |
| 341. |
Maximum pitch of rivets, used in steel stacks, is limited to |
| A. | 6 t |
| B. | 10 t |
| C. | 12 t |
| D. | 16 t t |
| Answer» B. 10 t | |
| 342. |
According to IS: 800-1962, the coefficient of expansion of steel per degree centigrade per unit length, is taken as |
| A. | 0.000008 |
| B. | 0.000010 |
| C. | 0.000012 |
| D. | 0.000014 |
| Answer» C. 0.000012 | |
| 343. |
If R is the reaction on the bearing plate, the minimum moment of. inertia of the bearing stiffener provided at the support of a plate girder of overall depth D, the maximum thickness of the compression flange T, carrying total load W, is |
| A. | (D²/250) × (R/W) |
| B. | (D3T/250) × (R/W) |
| C. | (DT/250) × (R/W) |
| D. | (DT/250) × (W/R) |
| Answer» B. (D3T/250) × (R/W) | |
| 344. |
As per IS: 800, in the plastic design, which of the following pairs are correctly matched? Working Loads Load factor
|
| A. | (i) and (ii) are correct |
| B. | (i), (ii) and (iii) are correct |
| C. | (ii) and (iii) are correct |
| D. | Only (i) is correct |
| Answer» A. (i) and (ii) are correct | |
| 345. |
Effective length of a column effectively held in position and restrained in direction at both ends, is |
| A. | L |
| B. | 0.67 L |
| C. | 0.85 L |
| D. | 1.5 L |
| Answer» B. 0.67 L | |
| 346. |
Pick up the correct statement from the following: |
| A. | The ends of a strut, are connected together with two rivets |
| B. | The members of strut will have at least two connections spaced equidistant in theirlength |
| C. | The members when separated back-to-back, the connecting rivets should pass through solid washer or packing |
| D. | All the above |
| Answer» D. All the above | |
| 347. |
Effective length of a column effectively held in position and restrained in direction at one end but neither held in position nor restrained in direction at the other end, is |
| A. | 1.5 L |
| B. | 0.67 L |
| C. | 0.85 L |
| D. | 2 L |
| Answer» D. 2 L | |
| 348. |
If the thickness of thinnest outside plate is 10 mm, then the maximum pitch of rivets in tension will be taken as |
| A. | 120 mm |
| B. | 160 mm |
| C. | 200 mm |
| D. | 300 mm |
| Answer» B. 160 mm | |
| 349. |
The connection of one beam to another beam by means of an angle at the bottom and an angle at the top, is known as |
| A. | Unstiffened seated connection |
| B. | Stiffened seated connection |
| C. | Seated connection |
| D. | None of these |
| Answer» C. Seated connection | |
| 350. |
The effective length of a battened strut effectively held in position at both ends but not restrained in direction is taken as |
| A. | 1.8 LL |
| B. | 1.1 L |
| C. | 1.5 L |
| D. | .none |
| Answer» C. 1.5 L | |
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