A round bar made of same material consists of 4 parts each of 100mm length having diameters of 40mm, 50mm, 60mm and 70mm, respectively. If the bar is subjected to an axial load of 10kN, what will be the total elongation of the bar in mm?

0.4/ E ( 1/16 + 1/25 + 1/36 + 1/49)

4/ E ( 1/16 + 1/25 + 1/36 + 1/49)

2/ E ( 1/16 + 1/25 + 1/36 + 1/49)

40/ E ( 1/16 + 1/25 + 1/36 + 1/49)

Explore topic-wise MCQs in Strength of Materials.

This section includes 5 Mcqs, each offering curated multiple-choice questions to sharpen your Strength of Materials knowledge and support exam preparation. Choose a topic below to get started.

1.	A composite bar consists of a bar enclosed inside a tune of another material when compressed under a load as whole through rigid collars at the end of the bar. What will be the equation of compatibility?
A.	W<sub>1</sub> + W<sub>2</sub> = W
B.	W<sub>1</sub> + W<sub>2</sub> = constant
C.	W<sub>1</sub>/A<sub>1</sub>E<sub>1</sub> = W<sub>2</sub>/A<sub>2</sub>E<sub>2</sub>
D.	W<sub>1</sub>/A<sub>1</sub>E<sub>2</sub> = W<sub>2</sub>/A<sub>2</sub>E<sub>1</sub>
Answer» B. W<sub>1</sub> + W<sub>2</sub> = constant

Discussion

2.	A round bar made of same material consists of 4 parts each of 100mm length having diameters of 40mm, 50mm, 60mm and 70mm, respectively. If the bar is subjected to an axial load of 10kN, what will be the total elongation of the bar in mm?
A.	0.4/ E ( 1/16 + 1/25 + 1/36 + 1/49)
B.	4/ E ( 1/16 + 1/25 + 1/36 + 1/49)
C.	2/ E ( 1/16 + 1/25 + 1/36 + 1/49)
D.	40/ E ( 1/16 + 1/25 + 1/36 + 1/49)
Answer» E.

Discussion

3.	A bar is in two sections having equal lengths. The area of cross section of 1^st is double that of 2^nd. if the bar carries an axial load of P, then what will be the ratio of elongation in section 2nd to section 1st ?
A.	1/2
B.	2
C.	4
D.	1/4
Answer» C. 4

Discussion

4.	A rod, which tapers uniformly from 5cm diameter to 3cm diameter in a length of 50cm, is subjected to an axial load of 6000N. if E = 2,00,000 N/mm², what will be the extension of the rod?
A.	0.00114cm
B.	0.00124cm
C.	0.00127cm
D.	0.00154cm
Answer» D. 0.00154cm

Discussion

5.	A member ABCD is subjected to points load P₁=45kN, P₂, P₃=450kN and P₄=130kN. What will be the total elongation of the member, assuming the modulus of elasticity to be 2.1x105N/mm². The cross sectional area is 625mm, 2500mm, 1250mm respectively.
A.	0.4914mm
B.	0.4235mm
C.	0.4621mm
D.	0.4354mm
Answer» B. 0.4235mm

Discussion

Explore topic-wise MCQs in Strength of Materials.

A composite bar consists of a bar enclosed inside a tune of another material when compressed under a load as whole through rigid collars at the end of the bar. What will be the equation of compatibility?

A round bar made of same material consists of 4 parts each of 100mm length having diameters of 40mm, 50mm, 60mm and 70mm, respectively. If the bar is subjected to an axial load of 10kN, what will be the total elongation of the bar in mm?

A bar is in two sections having equal lengths. The area of cross section of 1st is double that of 2nd. if the bar carries an axial load of P, then what will be the ratio of elongation in section 2nd to section 1st ?

A rod, which tapers uniformly from 5cm diameter to 3cm diameter in a length of 50cm, is subjected to an axial load of 6000N. if E = 2,00,000 N/mm2, what will be the extension of the rod?

A member ABCD is subjected to points load P1=45kN, P2, P3=450kN and P4=130kN. What will be the total elongation of the member, assuming the modulus of elasticity to be 2.1x105N/mm2. The cross sectional area is 625mm, 2500mm, 1250mm respectively.

A bar is in two sections having equal lengths. The area of cross section of 1^st is double that of 2^nd. if the bar carries an axial load of P, then what will be the ratio of elongation in section 2nd to section 1st ?

A rod, which tapers uniformly from 5cm diameter to 3cm diameter in a length of 50cm, is subjected to an axial load of 6000N. if E = 2,00,000 N/mm², what will be the extension of the rod?

A member ABCD is subjected to points load P₁=45kN, P₂, P₃=450kN and P₄=130kN. What will be the total elongation of the member, assuming the modulus of elasticity to be 2.1x105N/mm². The cross sectional area is 625mm, 2500mm, 1250mm respectively.