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

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Related Mcqs:

  1. 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...
  2. For small discharge at high pressure, following pump is preferred_____________________?
    A. centrifugal B. axial flow C. mixed flow D. propeller E. reciprocating...
  3. According to fan laws, at constant speed and capacity, the pressure and power vary_____________________?
    A. directly as the air or gas density B. inversely as square root of density C. inversely as density D. as square of density E. as square root of density...
  4. According to fan laws, at constant weight of air or gas, the speed, capacity and pressure vary________________?
    A. directly as the air or gas density B. inversely as square root of density C. inversely as density D. as square of density E. as square root of density...
  5. According to fan laws, at constant pressure, the speed capacity and power vary_________________?
    A. directly as the air or gas density B. inversely as square root of density C. inversely as density D. as square of density E. as square root of density...
  6. 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...
  7. For very high discharge at low pressure such as for flood control and irrigation applications, following type of pump is preferred_________________?
    A. centrifugal B. axial flow C. reciprocating D. mixed flow E. none of the above...
  8. In a centrifugal pump casing, the flow of water leaving the_______________?
    A. radial B. radial C. centrifugal D. rectilinear E. vortex...
  9. Motion of a liquid in a volute casing of a centrifugal pump is an example of____________________?
    A. rotational flow B. radial C. forced spiral vortex flow D. forced cylindrical vortex flow E. spiral vortex flow...
  10. Casting of a centrifugal pump is designed so as to minimize________________?
    A. friction loss B. cavitation C. static head D. loss of kinetic energy E. starting time...
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