In axial flow fans and turbines, fluid enters and leaves as follows________________?

Related Mcqs:

1. For starting an axial flow pump, its delivery valve should be____________________?

   A. closed
   B. open
   C. depends on starting condition and flow desired
   D. could be either open or closed
   E. partly open and partly closed

2. Axial flow pump is started with its delivery valve________________?

   A. kept fully closed
   B. kept fully open
   C. irrespective of any position
   D. kept 50% open
   E. none of the above

3. According to fan laws, for the fans having constant wheel diameters, the power demand varies_______________?

   A. directly as fan speed
   B. square of fan speed
   C. cube of fan speed
   D. square root of fan speed
   E. none of the above

4. According to fan laws, for fans having constant wheel diameter, the pressure varies________________?

   A. directly as fan speed
   B. square of fan speed
   C. cube of fan speed
   D. square root of fan speed
   E. none of the above

5. According to fan laws, for fans having constant wheel diameter, the air or gas capacity varies______________________?

   A. directly as fan speed
   B. square of fan speed
   C. cube of fan speed
   D. square root of fan speed
   E. none of the above

6. Reaction turbines are used for____________________?

   A. low head
   B. high head
   C. high head and low discharge
   D. high head and high discharge
   E. low head and high discharge

7. Specific speed for reaction turbines ranges from___________________?

   A. 0 to 4.5
   B. 10 to 100
   C. 80 to 200
   D. 250 to 300
   E. none of the above

8. Francis, Kaplan and propeller turbines fall under the category of___________________?

   A. Impulse turbines
   B. Reaction turbines
   C. Axial flow turbines
   D. Mixed flow turbines
   E. Reaction-cum-impulse turbines

9. The hydraulic turbines are also known as : ___________?

   A. steam turbines
   B. water turbines
   C. combustion turbines
   D. Gas turbines

   Submitted by: Faheem Zaman Dhaunroo

10. In a centrifugal pump, the liquid enters the pump__________________?

    A. at the top
    B. at the bottom
    C. at the center
    D. from sides
    E. none of the above