221. Operation of McLeod gauge used for low pressure measurement is based on the principle of_____________________?
A. gas law
B. Boyle’s law
C. Charle’s law
D. Pascal’s law
✅ The correct answer is option B.
Civil Engineering Mcqs MCQs
222. If the diameter of a sewer is 150 mm, the gradient required for generating self cleansing velocity, is________________?
A. 1 in 60
B. 1 in 100
C. 1 in 120
D. None of these
✅ The correct answer is option B.
223. If D is the diameter of a circular sewer and D’ is the top horizontal diameter of an equivalent egg shaped section, the relationship which holds good, is_______________?
A. D’ = 0.64 D
B. D’ = 0.74 D
C. D’ = 0.84 D
D. D’ = 0.94 D
✅ The correct answer is option C.
224. The flow in which conditions do not change with time at any point, is known as _____________________?
A. one dimensional flow
B. uniform flow
C. steady flow
D. turbulent flow
✅ The correct answer is option C.
225. Falling drops of water become spheres due to the property of ________________?
A. adhesion
B. cohesion
C. surface tension
D. viscosity
✅ The correct answer is option C.
226. Metacentric height is the distance between the metacentre and___________________?
A. water surface
B. center of pressure
C. center of gravity
D. center of buoyancy
✅ The correct answer is option C.
227. A manhole is classified as shallow if its depth is between_________________?
A. 0.4 to 0.5 m
B. 0.5 to 0.7 m
C. 0.7 to 0.9 m
D. 0.9 to 1.20 m
✅ The correct answer is option C.
228. The upper surface of a weir over which water flows is known is________________?
A. crest
B. nappe
C. sill
D. weir top
✅ The correct answer is option C.
229. The ratio of absolute viscosity to mass density is known as____________________?
A. specific viscosity
B. viscosity index
C. kinematic viscosity
D. coefficient of viscosity
✅ The correct answer is option C.
230. If the depth of flow in a circular sewer is 1/4th of its diameter D, the wetted perimeter is______________?
A. /2
B. /4
C. /3
D. D
✅ The correct answer is option C.