A hydraulic intensifier normally consists of __________________?

Related Mcqs:

1. A hydraulic accumulator 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

2. Pressure intensifier increases the pressure in proportion to____________________?

   A. ratio of diameters
   B. square of ratio of diameters
   C. inverse ratio of diameters
   D. square of inverse ratio of diameters
   E. fourth power of ratio of diameters

3. 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

4. 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

5. 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

6. 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.

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

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

   Submitted by: Faheem Zaman Dhaunroo

8. Centrifugal 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

9. The optimum value of vane exit angle for a centrifugal pump impeller is_________________?

   A. 10-15°
   B. 20-25°
   C. 30-40°
   D. 50-60°
   E. 80-90°.

10. 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