Buckingham-π theorem states that in any physical problem including ‘n’ quantities having ‘m’ dimensions, the quantities can be arranged into _____________ independent dimensionless parameters?

Related Mcqs:

1. Choose the correct set of dimensions of viscosity that are equivalent (where, F, M, L, T are dimensions for force, mass, length and time respectively) ?

   A. FL-2T, ML-1T-1
   B. FLT, ML-1T-1
   C. ML-1T-3, F-1L2T
   D. F-1L2T-1, MLT-3

2. Which of the following is dimensionless ?

   A. Angular velocity
   B. Fanning friction factor
   C. Specific volume
   D. None of these

3. Which of the following is a dimensionless parameter ?

   A. Angular velocity
   B. Specific weight
   C. Kinematic viscosity
   D. None of these

4. Which of the following quantities are computed by using the hydraulic radius for noncircular ducts ?

   A. Velocity and relative roughness
   B. Head loss and velocity
   C. Reynold number, relative roughness and head loss
   D. Reynolds number and friction factor

5. Which of the following two quantities when same, makes one pipe system equivalent to another pipe system ?

   A. Head & discharge
   B. Length & discharge
   C. Length & diameter
   D. Friction factor & diameter

6. Pumping of a corrosive liquid is generally preferred to be done by a ______________ pump, as it can be made of a variety of materials including plastics?

   A. Piston
   B. Gear
   C. Positive displacement
   D. Sump

7. Power requirement of fans having constant wheel diameter varies _____________ fan speed?

   A. As square of
   B. Directly as
   C. As cube of
   D. None of these

8. Mass velocity in case of steady flow and through a constant cross-section conduit is independent of the _________________?

   A. Temperature
   B. Pressure
   C. Both A. & B.
   D. Neither A. nor B.

9. Mass velocity is independent of temperature & pressure, when the flow is______________________?

   A. Unsteady through unchanged cross-section
   B. Steady through changing cross-section
   C. Steady and the cross-section is unchanged
   D. Unsteady and the cross-section is changed

10. Consider a centrifugal pump having a specific impeller diameter, fixed impeller speed pumping a liquid of constant density at a particular discharge capacity. With decrease in the capacity of the pump, the _______________ decreases?

    A. NPSH required
    B. BHP required by the pump
    C. Head of the liquid pumped
    D. All A., B. and C.