The hydraulic turbines are also known as : ___________?

Related Mcqs:

1. 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

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

   A. radially, axially
   B. axially, radially
   C. axially, axially
   D. radially, radially
   E. combination of axial and radial

3. 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

4. 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

5. While steam expands in turbines, theoretically the entropy________________?

   A. remains constant
   B. increases
   C. decreases
   D. behaves unpredictably
   E. none of the above

6. Vacuum for reciprocating steam engines compared to steam turbines is__________________?

   A. more
   B. equal
   C. less
   D. could be more or less depending on the size of plant
   E. none of the above

7. Maximum impulse will be developed in hydraulic ram when ___________________?

   A. waste valve closes suddenly
   B. supply pipe is long
   C. supply pipe is short
   D. ram chamber is large
   E. supply pipe has critical diameter

8. A hydraulic intensifier normally consists of __________________?

   A. two cylinders, two rams and a storage device
   B. a cylinder and a ram
   C. two co-axial rams and two cylinders
   D. a cylinder, a piston, storage tank and control valve
   E. special type of pump with storage device and a pressure regulator

9. Which place in hydraulic turbine is most susceptible for cavitation __________________?

   A. inlet of draft rube
   B. blade inlet
   C. guide blade
   D. penstock
   E. draft tube exit

10. A hydraulic press has a ram of 15 cm diameter and plunger of 1.5 cm. It is required to lift a weight of 1 tonne. The force required on plunger is equal to_________________?

    A. 10 kg
    B. 100 kg
    C. 1000 kg
    D. 1 kg
    E. 10,000 kg