Explore topic-wise MCQs in Strength Materials.

This section includes 16 Mcqs, each offering curated multiple-choice questions to sharpen your Strength Materials knowledge and support exam preparation. Choose a topic below to get started.

1.

An unknown weight falls through a height of 10mm on a collar rigidly attached to a lower end of a vertical bar 500cm long. If E =200GPa what will be the value of stress?

A. 50 N/mm2
B. 60 N/mm2
C. 70 N/mm2
D. 80 N/mm2
Answer» E.
Discussion
2.

The maximum instantaneous extension, produced by an unknown falling weight through a height of 4cm in a vertical bar of length 3m and of cross section area 5cm2. what will be the instantaneous stress induced in the vertical bar and the value of unknown weight if E = 200GPa?

A. 1700 N
B. 1459.4 N
C. 1745.8 N
D. 1947.5 N
Answer» D. 1947.5 N
Discussion
3.

The maximum instantaneous extension, produced by an unknown falling weight in a vertical bar of length 3m. what will be the instantaneous stress induced in the vertical bar and the value of unknown weight if E = 200GPa?

A. 100 N/mm2
B. 110 N/mm2
C. 120 N/mm2
D. 140 N/mm2
Answer» E.
Discussion
4.

A load of 100N falls through a height of 2cm onto a collar rigidly attached to the lower end of a vertical bar 1.5m long and of 105cm2 cross- sectional area. The upper end of the vertical bar is fixed. What is the strain energy stored in the vertical bar if E = 200GPa?

A. 2.045 N-m
B. 3.14 N-m
C. 9.4 N-mm
D. 2.14 N-m
Answer» B. 3.14 N-m
Discussion
5.

A weight of 10kN falls by 30mm on a collar rigidly attached to a vertical bar 4m long and 1000mm2 in section. What will be the strain (E=210GPa)?

A. 0.00089
B. 0.0005
C. 0.00064
D. 0.00098
Answer» B. 0.0005
Discussion
6.

A load of 100N falls through a height of 2cm onto a collar rigidly attached to the lower end of a vertical bar 1.5m long and of 105cm2 cross- sectional area. The upper end of the vertical bar is fixed. What is the maximum instantaneous stress induced in the vertical bar if E = 200GPa?

A. 50.87 N/mm2
B. 60.23 N/mm2
C. 45.24 N/mm2
D. 63.14 N/mm2
Answer» C. 45.24 N/mm2
Discussion
7.

A weight of 10kN falls by 30mm on a collar rigidly attached to a vertical bar 4m long and 1000mm2 in section. What will be the instantaneous stress (E=210GPa)?

A. 149.4 N/mm2
B. 179.24 N/mm2
C. 187.7 N/mm2
D. 156.1 N/mm2
Answer» D. 156.1 N/mm2
Discussion
8.

THE_MAXIMUM_INSTANTANEOUS_EXTENSION,_PRODUCED_BY_AN_UNKNOWN_FALLING_WEIGHT_IN_A_VERTICAL_BAR_OF_LENGTH_3M._WHAT_WILL_BE_THE_INSTANTANEOUS_STRESS_INDUCED_IN_THE_VERTICAL_BAR_AND_THE_VALUE_OF_UNKNOWN_WEIGHT_IF_E_=_200GPA_??$

A. 100 N/mm<sup>2</sup>
B. 110 N/mm<sup>2</sup>
C. 120 N/mm<sup>2</sup>
D. 140 N/mm<sup>2</sup>
Answer» E.
Discussion
9.

An unknown weight falls through a height of 10mm on a collar rigidly attached to a lower end of a vertical bar 500cm long. If E =200GPa what will be the value of stress ?$

A. 50 N/mm<sup>2</sup>
B. 60 N/mm<sup>2</sup>
C. 70 N/mm<sup>2</sup>
D. 80 N/mm<sup>2</sup>
Answer» E.
Discussion
10.

The maximum instantaneous extension, produced by an unknown falling weight through a height of 4cm in a vertical bar of length 3m and of cross section area 5cm2 . what will be the instantaneous stress induced in the vertical bar and the value of unknown weight if E = 200GPa ?$

A. 1700 N
B. 1459.4 N
C. 1745.8 N
D. 1947.5 N
Answer» D. 1947.5 N
Discussion
11.

A load of 100N falls through a height of 2cm onto a collar rigidly attached to the lower end of a vertical bar 1.5m long and of 105cm2 cross- sectional area. The upper end of the vertical bar is fixed. What is the maximum instantaneous elongation in the vertical bar if E = 200GPa?

A. 0.245mm
B. 0.324mm
C. 0.452mm
D. 0.623mm
Answer» D. 0.623mm
Discussion
12.

A load of 100N falls through a height of 2cm onto a collar rigidly attached to the lower end of a vertical bar 1.5m long and of 105cm2 cross- sectional area. The upper end of the vertical bar is fixed. What is the maximum instantaneous stress induced in the vertical bar if E = 200GPa?

A. 50.87 N/mm<sup>2</sup>
B. 60.23 N/mm<sup>2</sup>
C. 45.24 N/mm<sup>2</sup>
D. 63.14 N/mm<sup>2</sup>
Answer» C. 45.24 N/mm<sup>2</sup>
Discussion
13.

A weight of 10kN falls by 30mm on a collar rigidly attached to a vertical bar 4m long and 1000mm2 in section. What will be the instantaneous stress ( E=210GPa ) ?

A. 149.4 N/mm<sup>2</sup>
B. 179.24 N/mm<sup>2</sup>
C. 187.7 N/mm<sup>2</sup>
D. 156.1 N/mm<sup>2</sup>
Answer» D. 156.1 N/mm<sup>2</sup>
Discussion
14.

What will be the stress induced in the rod if the height through which load is dropped is zero?

A. P/A
B. 2P/A
C. P/E
D. 2P/E
Answer» C. P/E
Discussion
15.

What is the value of stress induced in the rod due to impact load?

A. P/A ( 1 + ( 1 + 2AEh/PL)<sup>1/2</sup> )
B. P/A ( 2 + 2AEh/PL )
C. P/A ( 1 + ( 1 + AEh/PL)<sup>1/2</sup> )
D. P/A ( ( 1 + 2AEh/PL)<sup>1/2</sup> )
Answer» B. P/A ( 2 + 2AEh/PL )
Discussion
16.

What is the strain energy stored in a body when the load is applied with impact?

A. σE/V
B. σE<sup>2</sup>/V
C. σV<sup>2</sup>/E
D. σV<sup>2</sup>/2E
Answer» E.
Discussion