RRB Junior Engineer Civil Engineering Model Question Papers

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RRB Junior Engineer Examination


1. Two equal angles, each being ISA 100 mm × 100 mm of thickness 10 mm, are placed back-to-back and connected to either side of a gusset plate through a single row of 16 mm diameter rivets in double shear. The effective areas of the connected and unconnected legs of each of these angles are 775mm2 and 950 mm2 respectively. If these angles are not tack-riveted, the net effective area of this pair of angles is:
A. 3650 mm2
B. 3450 mm2
C. 3076 mm2
D. 2899 mm2

2. Steel has proportionality limit of 300MPa in simple tension. It is subjected to principal stresses of 120 MPa (tensile, 60 MPa (tensile and 30 MPa (compressive. What is the factor of safety according to maximum stress theory?
A. 1.5
B. 1.75
C. 1.8
D. 2.0

3. Consider the following statements:
1. The principle of superposition will hold good for the analysis of linear structural systems only
2. The stress in a structural member due to several applied forces is the sum of the effects due to each of such forces, applied one at a time, only if the Hooke’s law hold good.
3. Internal stresses may not be caused resulting from lack of fit of a structural member.
Which of these statements are correct?
A. 1,2 and 3
B. 1 and 2 only
C. 2 and 3 only
D. 1 and 3 only

4. A bar AB of diameter 40 mm and 4 m long is rigidly fixed at its ends. A torque 600 N-m is applied at a section of the bar, 1 m from end A. The fixing couples TA and TB at the supports A and B, respectively are
A. 200 N -m and 400 N-m
B. 300 N -m and 150 N-m
C. 450 N -m and 150 N-m
D. 300 N -m and 100 N-m

5. Consider the following pre-conditions for correct use of a the theodolite:
1. The vertical axis need not be perpendicular to the plane of the plate level bubble.
2. The line of sight must be perpendicular to the horizontal axis.
3. The axis of the level tube attached to the telescope need not be parallel to the line of sight.
4. The vertical axis, the horizontal axis and the line of sight should all pass through a point known as stadia centre.
Which of these conditions is/are necessary?
A. 1, 2, 3 & 4
B. 2 only
C. 3 only
D. 1 & 4 only

6. Two observation wells penetrating into a confined aquifer are located 1500 m apart in the direction of flow. Heads of 50 m and 25 m are indicated at these two observation wells. If the coefficient of permeability for the aquifer is 30 m/day and its porosity is 0.25, the time of travel of an inert tracer from one well to another is:
A. 75 days
B. 750 days
C. 1200 days
D. 3000 days

7. Consider the following statements:
1. The virtual work method is preferred to the equilibrium method for the determination of collapse load in a structure.
2. The number of plastic hinges required for the total collapse of a statically indeterminate structure is one less than the degree of indeterminacy of the structure.
3. In a large system the uniformly distributed load can be replaced by a number of concentrated loads to simplify the plastic analysis.
Which of these statements are correct?
A. 1, 2 and 3
B. 1 and 2 only
C. 1 and 3 only
D. 2 and 3 only

8. An equipment for use in construction activity is purchased now for Rs.15000, and is used continuously on the job. The annual OMR costs assignable as lump sum at the respective year beginning are Rs. 5000. The equipment will be used for 5 years after which its salvage value is estimated to then be Rs. 1000. The equivalent annual cost as reckoned at the end of each year when MACR is 10% for which SFF for 5 years is 0.1638 is:
A. Rs. 7800
B. Rs. 8000
C. Rs. 8793
D. Rs. 8957

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