A. the head loss is same through each pipe
B. the discharge is same through each pipe
C. a trial solution is not necessary
D. the discharge through each pipe is added to obtain total discharge
Related Mcqs:
- When time of closure tc = L/v0 (where L is length of pipe and v0 is speed of pressure wavE., the portion of pipe length subjected to maximum head is__________________?
A. L/4
B. L/3
C. L/2
D. L - The length of a pipe is 1 km and its diameter is 20 cm. If the diameter of an equivalent pipe is 40 cm, then its length is_____________________?
A. 32 km
B. 20 km
C. 8 km
D. 4 km - Two pipes of same length and diameters d and 2d respectively are connected in series. The diameter of an equivalent pipe of same length is________________?
A. less than d
B. between d and 1.5 d
C. between 1.5 d and 2d
D. greater than 2d - The horse power transmitted through a pipe is maximum when the ratio of loss of head due to friction and total head supplied is________________?
A. 1/3
B. 1/4
C. 1/2
D. 2/3 - The speed of a pressure wave through a pipe depends upon________________?
A. the length of pipe
B. the viscosity of fluid
C. the bulk modulus for the fluid
D. the original head - Two pipe systems are said to be equivalent when_________________?
A. head loss and discharge are same in two systems
B. length of pipe and discharge are same in two systems
C. friction factor and length are same in two systems
D. length and diameter are same in two systems - The maximum thickness of boundary layer in a pipe of radius r is____________________?
A. 0
B. r/2
C. r
D. 2r - 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 distance y from pipe boundary, at which the point velocity is equal to average velocity for turbulent flow, is________________?
A. 0.223 R
B. 0.423 R
C. 0.577 R
D. 0.707 Rwhere R is radius of pipe
- Flow at constant rate through a tapering pipe is________________?
1. steady flow
2. uniform flow
3. unsteady flow
4. non-uniform flow
The correct answer is?A. (1) and (2)
B. (1)and(iv)
C. (2) and (3)
D. (2) and (4)
