Q.1
The economical spacing of roof trusses works out to be _________ span.
  • a) 1/2 to 1/5 span
  • b) 1/3 to 1/5 span
  • c) 1/2 to 1/3 span
  • d) 1/4 to 1/6 span
Q.2
The top chord members of roof truss is called ___________
  • a) Common rafters
  • b) Principal rafters
  • c) Main tie
  • d) Pitch
Q.3
The bottom chord member of truss is known as ___________
  • a) Main tie
  • b) Principal rafters
  • c) Common rafters
  • d) Purlins
Q.4
_______ is a roof beam supported by roof truss.
  • a) Ridge line
  • b) Eve
  • c) Principal rafter
  • d) Purlins
Q.5
The ratio of rise to span of truss is called a ___________
  • a) Slope
  • b) Splay
  • c) Pitch
  • d) Tie
Q.6
The angle of repose is zero for ______________
  • a) Water
  • b) Masonry
  • c) Soil
  • d) Cement
Q.7
Biological Oxygen Demand (BOD) of safe drinking water must be ________
  • a) 10
  • b) 15
  • c) 5
  • d) 0
Q.8
The most common coagulant is _____________
  • a) Magnesium sulphate
  • b) Alum
  • c) Chlorine
  • d) Salt
Q.9
The process of forming thick gelatinous precipitates is known as ___________
  • a) Sedimentation
  • b) Flocculation
  • c) Coagulation
  • d) Filtration
Q.10
What is the desirable limit of calcium in drinking water?
  • a) 45 mg/l
  • b) 60 mg/l
  • c) 75 mg/l
  • d) 90 mg/l
Q.11
Oxidation is done in __________ method.
  • a) Sedimentation
  • b) Filtration
  • c) Coagulation
  • d) Aeration
Q.12
Which of the following is a method of aeration?
  • a) Mechanical straining
  • b) Cascades
  • c) Biological metabolism
  • d) Electrolytic changes
Q.13
Which of the following is not a method of chlorination?
  • a) As bleaching powder
  • b) As free chlorine gas
  • c) As chloramines
  • d) Use of chloramines
Q.14
Bulk modulus is denoted by __________
  • a) A
  • b) E
  • c) K
  • d) V
Q.15
The stress corresponding to 0.of strain in the stress-strain curve is _________
  • a) Proof stress
  • b) Working stress
  • c) Direct stress
  • d) Tenacity
0 h : 0 m : 1 s