Engineering Questions with Answers - Multiple Choice Questions
Strength of Materials MCQs Strain Energy
1 - Question
Resilience can also be termed as ___________
a) Stress energy
b) Strain energy
c) Modulus
d) Tenacity
View Answer
Answer: b
Explanation: The capability of a material to absorb energy when it is deformed elastically and release that energy upon unloading is known resilience. This resilience is also termed as Strain energy.
2 - Question
Mathematically, strain energy = _________
a) Power
b) Work done
c) Young’s Modulus
d) Energy
View Answer
Answer: b
Explanation: By the principle of work, the amount of strain energy in a body is found. When a load acts on a body there will be deformation, which causes movement of the applied load. This work is done by the applied load.
3 - Question
Calculate the Strain energy stored in a body of stress 0.0366 N/mm2. The cross sectional area is 60 m2and length of body is 1 m. Take E = 2×105 N/mm2.
a) 0.2009 N.mm
b) 0.0416 N.mm
c) 0.0987 N.mm
d) 0.1316 N.mm
View Answer
Answer: a
Explanation: Given that : l = 1000 mm ; A = 60000 mm2; f = 0.0366 N/mm2.
Strain energy stored = f2/2EI × Volume
= (0.0366)2/ 2×2×105× (200×300) × (1000)
= 0 2009 N.mm.
4 - Question
What are the units of measurement for wooden and steel trusses?
a) 1 RM
b) 1 N.o
c) m2
d) m
View Answer
Answer: b<br />
Explanation: The units of measurement for wooden and steel trusses is 1 N.o
| Description of work | Units of measurement |
| Earth work excavation | 1 m3 |
| Steel reinforcement | 1 kN |
| Wooden and steel trusses | 1 No |
5 - Question
Which of the following methods is also known as individual wall method?
a) Centre line method
b) Alignment method
c) Long wall and short wall method
d) Voluminous method
View Answer
Answer: c
Explanation: Long wall short wall method is tedious and long lasting. In this method, the length of wall running in one direction are measured first out to out and that of running in the perpendicular direction are measured in to in.
6 - Question
Centre line method is accurate method.
a) False
b) True
View Answer
Answer: b
Explanation: The estimates can be prepared quickly by using center line method. This is not only an accurate method but also a very quick method.
7 - Question
_______ gives the nature and class of work.
a) Estimate
b) Specifications
c) Tenders
d) Survey
View Answer
Answer: b
Explanation: Drawings cannot give every information about materials and quality. The specifications give the nature and class of work, quantity of materials and workmanship. They are very useful during the execution of work.
8 - Question
In foundation concrete, coarse aggregate size should be __________
a) 20 mm
b) 30 mm
c) 40 mm
d) 50 mm
View Answer
Answer: c
Explanation: Generally foundation concrete is laid about thickness of 30 cm with proportion 1:4:8 (or) 1:5:10 and are measured in m3.
Before laying the concrete bed level, sand filling and sinking must be done and checked properly.
9 - Question
What is the painting coefficient for flush doors?
a) 2.3
b) 2.4
c) 3.4
d) 3.6
View Answer
Answer: b<br />
Explanation: The painting coefficient for flush doors is 2.4.
| Description | Multiplying factor of Paint coefficient |
| Fully glazed doors | 1.6 |
| Fully ventilated doors | 3.6 |
| Flush doors | 2.4 |
10 - Question
Which of the following rules is known as “Prismoidal Rule”?
a) Mean sectional rule
b) Trapezoidal rule
c) Simpson’s rule
d) Mid sectional rule
View Answer
Answer: c
Explanation: Prismoidal rule is used when the shape of the solid between two parallel cross sections is in the shape of a prismoid. This is also known as Simpsons rule volume is calculated by
V = L/6 (A1 + 4A + A2).
11 - Question
Which of the following estimates is also known as a preliminary estimate?
a) Detailed estimate
b) Scientific estimate
c) Approximate estimate
d) Abstract estimate
View Answer
Answer: c
Explanation: An approximate estimate is prepared to decide whether the funds available for the proposal is sufficient or not. The estimate is accompanied by a detailed report explaining the necessity and utility of the proposal.
12 - Question
Service unit method is related to ___________ estimate.
a) Abstract
b) Approximate
c) Detailed
d) Cubic content
View Answer
Answer: b
Explanation: There are over a number of methods available for preparing approximate estimate but the following methods are important
i. Plinth area method
ii. Cubic content method
iii. Service unit method.
13 - Question
By ___________ estimate, a technical sanction is obtained.
a) Approximate
b) Detailed
c) Abstract
d) Preliminary
View Answer
Answer: b
Explanation: Detailed estimate is required for arranging the contract and entering into the agreement. In this estimate, the quantities are worked out in the order in which construction proceeds. For getting technical sanction, the detailed estimate is prepared.
14 - Question
Which of the following is an exact estimate?
a) Abstract
b) Detailed
c) Rough
d) Preliminary
View Answer
Answer: b
Explanation: In a detailed estimate, the quantities of each item of work such as earth excavation, bed concrete and brick masonry are calculated. Detailed drawings are required for this estimate.
15 - Question
Calculate the instantaneous elongation if a steel rod of 40 mm and 4 m long subjected to an axial pull of 80 kN. Take E = 2×105 N/mm2.
a) 1.23 mm
b) 1.27 mm
c) 1.31 mm
d) 1.43 mm
View Answer
Answer: b
Explanation: An instantaneous elongation = f/A × L ; and f = P/A = 80000/1256.63 = 63.66 N/mm2.
= 63.66/1256.63 × 4000
= 1.27 mm.