1. kinetic energy is zero
2. kinetic energy is 1
3. momentum is zero
4. momentum is 1
The correct statements are?
A. (1) and (3)
B. (2) and (3)
C. (1) and (4)
D. (2) and (4)
Related Mcqs:
- If the velocity is zero over half of the cross-sectional area and is uniform over the remaining half, then the momentum correction factor is_______________?
A. 1
B. 4/3
C. 2
D. 4 - If velocity is zero over l/3rd of a cross-section and is uniform over remaining 2/3rd of the cross-section, then the correction factor for kinetic energy is__________________?
A. 4/3
B. 3/2
C. 9/4
D. 27/8 - When the velocity distribution is uniform over the cross-section, the correction factor for momentum is__________________?
A. 0
B. 1
C. 4/3
D. 2 - The value of friction factor ‘f’ for smooth pipes for Reynolds number 106 is approximately equal to________________?
A. 0.1
B. 0.01
C. 0.001
D. 0.0001 - For laminar flow in circular pipes, the Darcy’s friction factor f is equal to_________________?
A. 16/Re
B. 32/ Re
C. 64/ Re
D. none of the above where R,, is Reynolds number - For laminar flow in a pipe of circular cross-section, the Darcy’s friction factor f is________________?
A. directly proportional to Reynolds number and independent of pipe wall roughness
B. directly proportional to pipe wall roughness and independent of Reynolds number
C. inversely proportional to Reynolds number and indpendent of pipe wall roughness
D. inversely proportional to Reynolds number and directly proportional to pipe wall roughness - The theoretical value of coefficient of contraction of a sharp edged orifice is_______________?
A. 0.611
B. 0.85
C. 0.98
D. 1.00 - If a vessel containing liquid moves downward with a constant acceleration equal to ‘g’ then_____________?
A. the pressure throughout the liquid mass is atmospheric
B. there will be vacuum in the liquid
C. the pressure in the liquid mass is greater than hydrostatic pressure
D. none of the above - The Prartdtl mixing length is_________________?
A. zero at the pipe wall
B. maximum at the pipe wall
C. independent of shear stress
D. none of the above - Which of the following has highest coefficient of discharge ?
A. sharp edged orifice
B. venturimeter
C. Borda’s mouthpiece running full
D. CipoUetti weir
