A hydraulic accumulator normally consists of________________?

Related Mcqs:

1. Hydraulic accumulator is used for____________________?

   A. accumulating oil
   B. supplying large quantities of oil for very short duration
   C. generally high pressures to operate hydraulic machines
   D. supplying energy when main supply fails
   E. accumulating hydraulic energy

2. 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

3. 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

4. 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

5. Runaway speed of a hydraulic turbine is_________________?

   A. full load speed
   B. the speed at which turbine runner will be damaged
   C. the speed if the turbine runner is allowed to revolve freely without load and with the wicket gates wide open
   D. the speed corresponding to maximum overload permissible
   E. none of the above.

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

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

   Submitted by: Faheem Zaman Dhaunroo

7. When a piping system is made up primarily of friction head and very little of vertical lift, then pump characteristics should be__________________?

   A. horizontal
   B. nearly horizontal
   C. steep
   D. first rise and then fall
   E. none of the above

8. For small discharge at high pressure, following pump is preferred_____________________?

   A. centrifugal
   B. axial flow
   C. mixed flow
   D. propeller
   E. reciprocating

9. 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

10. Impulse turbine is generally fitted______________________?

    A. at the level of tail race
    B. little above the tail race
    C. slightly below the tail race
    D. about 2.5 m above the tail race to avoid cavitation
    E. about 2.5 m below the tail race to avoid cavitation