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# Civil Engineering | Page - 7 | Multiple Choice Questions (MCQ)

Q | ID - 07bb7d2122-sec2

## A tensile test is conducted on a mild steel bar. The following data was obtained from the test : diameter of the steel bar= 3cm, Gauge Length of the bar = 20cm, Load at Elastic limit= 250kN, Extension at a load of 150kN= 0.21 mm, Maximum Load = 380kN, Total Extension= 60mm, Diameter of the rod at failure=2.25cm, determine the percentage decrease in Area?

23.25%
32.75%
41.75%
43.75%
Solid Mechanics

2 years ago | 28/01/2019 19:34:33 | gknowledge
Q | ID - f346541fde-sec2

## A tensile test is conducted on a mild steel bar. The following data was obtained from the test : diameter of the steel bar= 3cm, Gauge Length of the bar = 20cm, Load at Elastic limit= 250kN, Extension at a load of 150kN= 0.21 mm, Maximum Load = 380kN, Total Extension= 60mm, Diameter of the rod at failure=2.25cm, determine percentage elongation?

10%
20%
30%
40%
Solid Mechanics

2 years ago | 28/01/2019 19:30:55 | gknowledge
Q | ID - 6be0910b3c-sec2

## A tensile test is conducted on a mild steel bar. The following data was obtained from the test : diameter of the steel bar= 3cm, Gauge Length of the bar = 20cm, Load at Elastic limit= 250kN, Extension at a load of 150kN= 0.21 mm, Maximum Load = 380kN, Total Extension= 60mm, Diameter of the rod at failure=2.25cm, determine the stress at elastic limit?

3.54 x 10^5 N/sq(mm)
353.68N/Sq(m)
353.68GN/Sq(m)
0.353 N/Sq(mm)
Solid Mechanics

2 years ago | 28/01/2019 19:12:08 | gknowledge
Q | ID - 3109cc6af4-sec2

## A tensile test is conducted on a mild steel bar. The following data was obtained from the test : diameter of the steel bar= 3cm, Gauge Length of the bar = 20cm, Load at Elastic limit= 250kN, Extension at a load of 150kN= 0.21 mm, Maximum Load = 380kN, Total Extension= 60mm, Diameter of the rod at failure=2.25cm, determine young's modulus?

202 GN/sqm
2.02 x 10^6 N/sq(mm)
0.202 x 10^4N/sq(mm)
202MN/sqm
Solid Mechanics

2 years ago | 28/01/2019 19:07:35 | gknowledge
Q | ID - fa69f5d7e1-sec2

## consider three dimensional system subjected to stress in x, y, z directions, then total strain in x direction is?

=longitudinal strain in x direction - lateral strain in y direction - lateral strain in z direction
=longitudinal strain in x direction + lateral strain in y direction + lateral strain in z direction
=longitudinal strain in x direction - longitudinal strain in y direction -longitudinal strain in z direction
=longitudinal strain in x direction + longitudinal strain in y direction + longitudinal strain in z direction
Civil Engineering

2 years ago | 28/01/2019 14:26:06 | gknowledge
Q | ID - 1c558f8d52-sec2

## Find the young Modulus of a brass rod of diameter 25 mm and of length 250mm which is subjected to a tensile load of 50kN when the extension of the rod is equal to 0.3 mm.?

80526
86134
84925
82520
Civil Engineering

2 years ago | 28/01/2019 13:40:50 | gknowledge
Q | ID - 7313c7c859-sec2

## Find the Minimum diameter of a steel wire, which is used to raise a load of 4000 N if the stress is not exceed 95MN/sq(m)?

0.732mm
0.732cm
0.732 m
7.32 mm
Civil Engineering

2 years ago | 28/01/2019 13:33:36 | gknowledge
Q | ID - 8d79ed5b58-sec2

## A rod 150 cm long and of diameter 2.0 cm is subjected to an axial pull of 20kN. If the modulus of elasticity of the material of the rod is 2 x 10^5 N/Sq(mm) ; determine : the elongation in rod?

0.477cm
0.00477cm
0.0477cm
0.000477cm
Civil Engineering

2 years ago | 28/01/2019 13:26:21 | gknowledge
Q | ID - 58bb4c50be-sec2

## A rod of 150cm long and of diameter 2.0 cm is subjected to an axial pullof 20kN. If the modulus of elasticity of the material of the rod is 2 x 10^5 N/sq(mm), determine strain?

0.000318
0.00318
0.0000318
0.0318
Civil Engineering

2 years ago | 28/01/2019 13:18:55 | gknowledge
Q | ID - 0caf6cbdda-sec2

## A rod 150 cm long and of diameter 2.0 cm is subjected to an axial pull of 20kN. If the modulus of elasticity of the material of the rod is 2 x 10^5 N/Sq(mm) ; determine : the stress?

63.600 N/sq(mm)
63.500 N/sq(mm)
63.662 N/sq(mm)
63.562 N/sq(mm)
Civil Engineering

2 years ago | 28/01/2019 13:09:22 | gknowledge