113. In pumping stations, the type ofjoint generally used, is
A. socket and spigot joint
B. flanged joint
C. expansion joint
D. dresser coupling joint
114. Steel pipe are
A. suitable for withstanding high internal pressure
B. connected by riveted or welded joints
C. generally laid under ground and no expansion joint is required
D. likely to last 100 years under ordinary conditions
115. Corrosion of a pipe
A. reduces its life span
B. reduces its carrying capacity
C. adds colour to water
D. all the above,
116. Asbestos pipes are joined by means of
A. flanged joint
B. flexible joint
C. dresser coupling joint
D. simplex joint
117. Asbestos pipes are
A. light in Weight and easy to transport
B. highly resistant to corrosion
C. high flexible to accommodate deflection upto 12?
D. all the above.
118. Pick up the correct statement from the following :
A. Copper pipes are highly resistant to acidic and alkaline water
B. Wrought iron pipes are lighter than cast iron pipes
C. Wrought iron pipes corrode quickly and are less durable
D. All the above.
119. P.V.C. pipes can withstand pressure head of water upto
A. 25 m
B. 50 m
C. 75 m
D. 100 m
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