MCQOPTIONS
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MCQOPTIONS
This section includes 33 Mcqs, each offering curated multiple-choice questions to sharpen your Civil Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
A single angle of thickness 10 mm is connected to a gusset by 6 numbers of 18 mm diameter bolts, with pitch of 50 mm and with edge distance of 30 mm. The net area in block shear along the line of the transmitted force is |
| A. | 1810 mm2 |
| B. | 1840 mm2 |
| C. | 1920 mm2 |
| D. | 1940 mm2 |
| Answer» B. 1840 mm2 | |
| 2. |
As per IS: 800-1984 specification, how to calculate the gross diameter of a bolt? (If diameter of the bolt is less than or equal to 25 mm.) |
| A. | Nominal diameter + 2 mm |
| B. | Nominal diameter + 2.5 mm |
| C. | Nominal diameter + 1.5 mm |
| D. | Nominal diameter + 0.5 mm |
| Answer» D. Nominal diameter + 0.5 mm | |
| 3. |
A factored eccentric force of 240kN is acting on a bracket connection subjected to a moment parallel to the plane of joint. Assuming the number of bolts as 8.The shear force to be considered on each of the bolt is: |
| A. | 24kN |
| B. | 15kN |
| C. | 48kN |
| D. | 30kN |
| Answer» E. | |
| 4. |
In arc welding process, the arc is shielded in order to: |
| A. | All of the above |
| B. | Control melting of electrode for more usage of energy only |
| C. | Add alloying ingredients only |
| D. | Protect molten metal from air, either with gas vapour or slag only |
| Answer» B. Control melting of electrode for more usage of energy only | |
| 5. |
As per IS 800 for a nominal diameter of 12 mm bolt, the diameter of the hole provided should be: |
| A. | 15 mm |
| B. | 13 mm |
| C. | 20 mm |
| D. | 24 mm |
| E. | 50 mm |
| Answer» C. 20 mm | |
| 6. |
A circular shaft of diameter 120 mm is welded to a rigid plate by a fillet weld of size 6 mm. If a torque of 8 kNm is applied to the shaft, what is the maximum stress in the weld (to the nearest unit)? |
| A. | 84 N/mm2 |
| B. | 87 N/mm2 |
| C. | 90 N/mm2 |
| D. | 95 N/mm2 |
| Answer» B. 87 N/mm2 | |
| 7. |
Match List – l (Type of stress) with List – ll (Allowable value of stress) and select the correct answer using the codes given below the lists:(fy = minimum yield stress of steel) List – I List – IIA.Axial tension1.0.75 fyB.Bending tension2.0.66 fyC.Maximum shear stress3.0.60 fyD.Bearing stress4.0.45 fy |
| A. | A-2. B-3, C-1, D-4 |
| B. | A-3, B-2, C-4, D-1 |
| C. | A-2, B-3, C-4, D-1 |
| D. | A-3, B-2, C-1, D-4 |
| Answer» C. A-2, B-3, C-4, D-1 | |
| 8. |
High Strength Friction Grip Bolts can be used for(i) Slip resistant connection(ii) Bearing type connection(iii) Shear connection |
| A. | (i) and (ii) |
| B. | (i) and (iii) |
| C. | (ii) and (iii) |
| D. | (i), (ii) and (iii) |
| Answer» B. (i) and (iii) | |
| 9. |
According to IS 800-2007, the nominal shear capacity of M20 bolt of grade 4.6 with one shear plane passing through bolt shank and one shear plane passing through threaded portion is |
| A. | 45·27 kN |
| B. | 117·52 kN |
| C. | 56·21 kN |
| D. | 129·14 kN |
| Answer» E. | |
| 10. |
Diamond pattern of bolting is beneficial over chain and staggered bolting because |
| A. | It transmits maximum force |
| B. | It has maximum efficiency |
| C. | It is easy to fabricate |
| D. | It leads to minimum deflection |
| Answer» C. It is easy to fabricate | |
| 11. |
If 'd' is the gross diameter, minimum pitch of a riveted joint must be: |
| A. | 1.5 d |
| B. | 2.5 d |
| C. | 3.5 d |
| D. | 4d |
| Answer» C. 3.5 d | |
| 12. |
As per IS 816:1969 the width of diameter of the weld should be: |
| A. | less than three times the thickness or 25 mm, whichever is greater |
| B. | less than five times the thickness or 35 mm, whichever is greater |
| C. | less than ten times the thickness or 45 mm, whichever is greater |
| D. | less than two times the thickness or 50 mm, whichever is greater |
| E. | less than five times the thickness or 70 mm, whichever is greater |
| Answer» B. less than five times the thickness or 35 mm, whichever is greater | |
| 13. |
In the design of bracket connection, ________ is the salient factor in the design. |
| A. | Load alone |
| B. | Load and eccentricity |
| C. | Eccentricity only |
| D. | Property of steel only |
| Answer» C. Eccentricity only | |
| 14. |
For single riveted joints, the expected efficiency of the steel pipe joints is approximately: _____. |
| A. | 0.47 |
| B. | 0.63 |
| C. | 0.75 |
| D. | 0.9 |
| Answer» C. 0.75 | |
| 15. |
In a double riveted double-covered butt joint, the strength of the joint per pitch length in shearing the rivets Pd and strength of one rivet in single shear Ps are related as: |
| A. | Pd = 4 Ps |
| B. | Pd = 2.5 Ps |
| C. | Pd = 2 Ps |
| D. | Pd = 3 Ps |
| Answer» B. Pd = 2.5 Ps | |
| 16. |
If 'p' and 'd' are pitch and gross diameter of rivets, the efficiency of the rivets joint is:- |
| A. | p/(p - d) |
| B. | p/(p + d) |
| C. | (p - d)/p |
| D. | (p + d)/p |
| Answer» D. (p + d)/p | |
| 17. |
A welded joint as compared to a riveted joint has |
| A. | Same strength |
| B. | Less strength |
| C. | More strength |
| D. | Not predictable |
| Answer» D. Not predictable | |
| 18. |
If the size of the fillet weld is 6 mm, then the throat thickness is = ______ mm |
| A. | 4.2 |
| B. | 8.57 |
| C. | 3.1 |
| D. | 1 |
| Answer» B. 8.57 | |
| 19. |
An angle ISA 50 × 50 × 6 is connected to a gusset plate 5 mm thick, with 16 mm bolts. What is the bearing strength of the bolt when the hole diameter is 16 mm and the allowable bearing stress is 250 MPa? |
| A. | 8 kN |
| B. | 20 kN |
| C. | 22 kN |
| D. | 24 kN |
| Answer» C. 22 kN | |
| 20. |
As per IS 800 ∶ 2007, what is the maximum pitch of bolts allowed in a lap joint between two steel plates (in compression) of equal of thickness, t? |
| A. | 2.5 times diameter of the hole |
| B. | 2.5 times diameter of the bolt |
| C. | 12t or 200 mm whichever is less |
| D. | 16t or 200 mm whichever is less |
| Answer» D. 16t or 200 mm whichever is less | |
| 21. |
For 4.6 type bolt conforming to IS 1367, respective ultimate tensile strength and yield strength will be: |
| A. | 400 MPa and 240 MPa |
| B. | 240 MPa and 410 MPa |
| C. | 410 MPa and 240 MPa |
| D. | 240 MPa and 400 MPa |
| Answer» B. 240 MPa and 410 MPa | |
| 22. |
As per IS 800:2007 the size of a fillet weld should not be less than ____ mm nor more than the thickness of the thinner part. |
| A. | 2 |
| B. | 5 |
| C. | 3 |
| D. | 10 |
| E. | 12 |
| Answer» D. 10 | |
| 23. |
In which type of joint, plates to be fastened are placed one over the other, and riveted by one or more rows of rivets? |
| A. | Chain joint |
| B. | Butt joint |
| C. | Zig – Zag joint |
| D. | Lap joint |
| Answer» E. | |
| 24. |
As per IS code, the maximum longitudinal pitch allowed in bolted joints of tension members is nominally |
| A. | 12 times the thickness of the plate |
| B. | 12 times the diameter of the bolt |
| C. | 16 times the thickness of the plate |
| D. | 16 times the diameter of the bolt |
| Answer» D. 16 times the diameter of the bolt | |
| 25. |
As per IS:800-1984, the minimum pitch of rivets in a row is recommended as the diameter of the rivet times |
| A. | 2.0 |
| B. | 2.5 |
| C. | 3.0 |
| D. | 4.0 |
| Answer» C. 3.0 | |
| 26. |
Four bolts P, Q, R and S of equal diameter are used for a bracket subjected to a load of 130 kN as shown in the figure.The force in bolt P is |
| A. | 32.50 kN |
| B. | 69.32 kN |
| C. | 82.50 kN |
| D. | 119.32 kN |
| Answer» C. 82.50 kN | |
| 27. |
Calculate the number of M20 bolts required to connect the flange of an ISSC 200 column and a beam ISMB 400 which is carrying a reaction of 140 kN due to factored loads (take the strength of bolt as 45.3 kN). |
| A. | 6 |
| B. | 2 |
| C. | 8 |
| D. | 4 |
| Answer» E. | |
| 28. |
Prying forces are: |
| A. | Shearing forces on the bolts because of the joints. |
| B. | Tensile forces due to the flexibility of connected parts. |
| C. | Bending forces on the bolts because of the joints. |
| D. | Forces due the friction between connected parts. |
| Answer» C. Bending forces on the bolts because of the joints. | |
| 29. |
A 6 mm thick mild steel plate is connected to an 8 mm thick plate by 16 mm diameter shop rivets. What is the number of rivets required to carry an 80 kN load? |
| A. | 2 |
| B. | 3 |
| C. | 4 |
| D. | 6 |
| Answer» D. 6 | |
| 30. |
A fillet-welded joint is shown in the figure. The size of the weld is 8 mm. Safe stress in the weld is 110 N/mm2. What is the safe force (to the nearest magnitude) to which the weld can be subjected? |
| A. | 125 kN |
| B. | 130 kN |
| C. | 140 kN |
| D. | 135 kN |
| Answer» E. | |
| 31. |
In design of a fillet weld, size of weld for rounded toe of rolled section must not be more than ________ of the thickness of the toe. |
| A. | 1/4 |
| B. | 1/2 |
| C. | 3/4 |
| D. | 5/4 |
| Answer» D. 5/4 | |
| 32. |
For 20 mm diameter rivet, the diameter of rivet hole is |
| A. | 22 mm |
| B. | 20.5 mm |
| C. | 21 mm |
| D. | 21.5 mm |
| Answer» E. | |
| 33. |
If a structure is under fatigue stresses, then the welded joints as compared to riveted joints will fail |
| A. | Earlier |
| B. | Later |
| C. | At the same time |
| D. | Not at all |
| Answer» C. At the same time | |