A hydroelectric scheme operating under a head of 80 m will be classified as_____________?

A. aqueduct
B. superpassage
C. syphon
D. syphon aqueduct

A. 50 years
B. 150 years
C. 200 years
D. 250 years

A. Both A and R are true and R is the correct explanation of A
B. Both A and R are true but R is not the correct explanation of A
C. A is true but R is false
D. A is false but R is true

A. are costlier
B. are less susceptible to failure
C. require sound rock foundations
D. require less skilled labour

A. B/2
B. B/3
C. B/4
D. B/6

A. uniform
B. subcritical
C. critical
D. super critical