Related Questions

Initial setting time of cement for asbestos cement products should be not less than
A 30 minutes
B 50 minutes
C 75 minutes
D 90 minutes
A tank is fitted with 8 pipes, some of them that fill the tank and others that are waste pipe meant to those that empty the tank can empty it in 6 hours. If all the pipes are kept open when the tank is full, it will take exactly 6 hours for the tank to empty. How many of these are these are fill pipes?
A 2
B 4
C 6
D 5
Asbestos pipes are
A light in weight and easy to transport
B highly resistant to corrosion
C very much smooth and hydraulically efficient
D all the above
The maximum permissible span of asbestos cement sheets is
A 650 mm
B 810 mm
C 1250 mm
D 1680 mm
The asbestos cement sewers are
A Light in weight
B Not structurally strong to bear large compressive stress
C Susceptible to corrosion by sulphuric acid
D All the above
For testing compressive and tensile strength of cement, the cement mortar is made by mixing cement and standard sand in the proportions of
A 1 : 2
B 1 : 3
C 1 : 4
D 1 : 6
Large diameter reinforced cement concrete (RCC) pipes are generally joined by __________ joint.
A Flanged iron
B Collar
C Flexible
D Expansion
Which is the most suitable joint for the pipes, with are laid submerged under water, where the bottom of the river bed is uneven?
A Collar joint
B Flexible joint
C Flanged joint
D Expansion joint
The stone masonry of finely dressed stones laid in cement or lime, is
A Random rubble masonry
B Coursed rubble masonry
C Dry rubble masonry
D Ashlar masonry
Two pipes A and B can fill a tank in 20 and 30 minutes respectively . If both the pipes are used together , then how long will it take to fill the tank ?
A 12 min
B 15 min
C 25 min
D 50 min

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