Govt. Exams
Entrance Exams
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Topics in Civil Engineering
For a two-span continuous beam with equal spans and equal loads, which statement is true?
Correct Answer:
A. Support moments are equal at both interior supports
EXPLANATION
For symmetric loading and equal spans, interior support moments are equal due to symmetry of structure and loading.
For a propped cantilever beam, the number of reactions is:
Correct Answer:
C. 4
EXPLANATION
Propped cantilever has: fixed end (3 reactions: vertical, horizontal, moment) + prop reaction (1) = 4 total reactions.
The principle of virtual work states that for equilibrium of a structure:
Correct Answer:
B. Sum of virtual work by all forces is zero
EXPLANATION
Principle of virtual work: For equilibrium, ΣδW = 0. Sum of virtual work by internal and external forces must be zero.
In influence line diagram, what does the ordinate represent?
Correct Answer:
B. Coefficient of influence for unit load
EXPLANATION
Ordinate in influence line = coefficient showing magnitude of response at a fixed section per unit moving load.
What is the degree of static indeterminacy for a fixed beam with one internal hinge?
Correct Answer:
B. 2
EXPLANATION
Fixed beam has 3 reaction components. One internal hinge provides 1 additional equation (BM = 0). DI = 3 - 1 = 2
