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

Related Mcqs:

1. The net head under which the turbine reaches its peak efficiency at synchronous speed is called________________?

   A. design head
   B. rated head
   C. gross head
   D. operating head

2. The “outlet discharge factor” is the duty at the head of_________________?

   A. main canal
   B. branch canal
   C. watercourse
   D. distributory

3. As compared to crest of the normal portion of the weir, the crest of the under sluice portion of weir is kept at_____________?

   A. lower level
   B. higher level
   C. same level
   D. any of the above depending on the design

4. The net speed under which the turbine reaches its peak efficiency is called_________________?

   A. design speed
   B. rated speed
   C. gross speed
   D. operating speed

5. Under the same conditions, which of the following shapes of water surface will give the highest rate of evaporation ?

   A. flat water surface
   B. convex water surface
   C. concave water surface
   D. independent of shape of water surface

6. When surface of transpiration is submerged under water, then potential evapotranspiration is________________?

   A. much more than evapotranspiration
   B. much less than evapotranspiration
   C. equal to evapotranspiration
   D. equal to or less than evapotranspi-ration

7. The forces, which are considered for the analysis of an elementary profile of a gravity dam under empty reservoir condition, are________________?

   1) Water pressure
   2) Self weight
   3) Uplift
   4) Pressure due to earthquake
   The correct answer is

   A. Only (2)
   B. (1), (2) and (3)
   C. (1), (2) and (4)
   D. (1), (2), (3) and (4)

8. Irrigation water having the concentration of Na++ , Ca++ and Mg++ as 20, 3 and 1 Milli equivalent per litre respectively will be classified as__________________?

   A. low sodium water
   B. medium sodium water
   C. high sodium water
   D. very high sodium water

9. S-hydrograph is used to obtain unit hydrograph of________________?

   A. shorter duration from longer duration
   B. longer duration from shorter duration
   C. both (A) and (B)
   D. none of the above

10. A repelling groyne is aligned________________?

    A. pointing upstream
    B. pointing downstream
    C. perpendicular to bank
    D. parallel to bank