Related Questions

For the supply of materials for concrete, form work reinforcing and placing of concrete, removal of form work and curing of concrete, number of bar(s) required on bar chart, is
A 1
B 2
C 3
D 4
Corrosion involves exchange of electrons in __________ corrosion.
A Chemical
B Electrochemical
C Both A & B
D Neither A nor B
Corrosion in concrete sewers is caused by
A Septic conditions
B Dissolved oxygen
C Chlorine
D Nitrogen
Steel rods are normally used for concrete reinforcement because concrete and steel have almost equal
A Tensile strength
B Compressive strength
C Young's modulus
D Thermal co-efficient of expansion
In pneumatic control systems the control valve used as final control element converts
A Pressure signal to electric signal
B Pressure signal to position change
C Electric signal to pressure signal
D Position change to pressure signal
How does the strength of concrete differ with age of concrete?
A Increases
B Decreases
C No effect
D Increases, then decreases
If a is the offset of concrete bed in cms, and d is the depth of concrete bed in cms, then
A d = 0.445 a
B d = 0.557 a
C d = 0.775 a
D None of these
The maximum shear stress (q) in concrete of a reinforced cement concrete beam is
A $$\frac{{{\text{Shear force}}}}{{{\text{Lever arm}} \times {\text{Width}}}}$$
B $$\frac{{{\text{Lever arm}}}}{{{\text{Shear force}} \times {\text{Width}}}}$$
C $$\frac{{{\text{Width}}}}{{{\text{Lever arm}} \times {\text{Shear force}}}}$$
D $$\frac{{{\text{Shear force}} \times {\text{Width}}}}{{{\text{Lever arm}}}}$$
At a work site, statistical quality control of concrete means
A Measurement of risks to eliminate failures
B Applying the theory' of probability to sample testing or inspection
C Reduction in wastage of inspection costs
D Reduction in costs for the removal of defects
Rotor rheostat control method of speed control is used for
A Squirrel-cage induction motors only
B Slip ring induction motors only
C Both (A) and (B)
D None of the above

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