61. The non-clog pump which permits solid matter to pass out with the liquid sewage, is________________?
A. Centrifugal pump
B. Reciprocating pump
C. Pneumatic ejector
D. None of these
✅ The correct answer is option A.
Civil Engineering Mcqs MCQs
62. True one-dimensional flow occurs when___________________?
A. the direction and magnitude of the veiocity at all points are identical
B. the velocity of successive fluid par-ticles, at any point, is the same at suc-cessive periods of time
C. the magnitude and direction of the velocity do not change from point to point in the fluid
D. the fluid particles move in plane or parallel planes and the streamline pat-terns are identical in each plane
✅ The correct answer is option A.
63. pH value of sludge during alkaline regression stage, is__________________?
A. More than 7
B. Less than 7
C. Less than 6
D. More than 6
✅ The correct answer is option A.
64. The maximum depth of sedimentation tanks, is kept__________________?
A. 3 m
B. 3.5 m
C. 4 m
D. 4.5 m
✅ The correct answer is option A.
65. The center of pressure of a surface subjected to fluid pressure is the point____________________?
A. on the surface at which resultant pres-sure acts
B. on the surface at which gravitational force acis
C. at which all hydraulic forces meet
D. similar to metacentre
✅ The correct answer is option A.
66. The ability to meet debts as they become due is known as __________________?
A. Solvency
B. Leverage
C. Insolvency
D. Liquidity
✅ The correct answer is option A.
67. Cavitation will begin when______________________?
A. the pressure at any location reaches an absolute pressure equal to the saturated vapour pressure of the liquid
B. pressure becomes more than critical pressure
C. flow is increased
D. pressure is increased
✅ The correct answer is option A.
68. The digested sludge from septic tanks, is removed after a maximum period of__________________?
A. 3 years
B. 3.5 years
C. 4 years
D. 5 years
✅ The correct answer is option A.
69. Assertion A. : Discharging the effluents from the oxidation ponds just up stream of lakes or reservoirs is undesirable. Reason (R) : The discharged algae get settled in the reservoirs and cause anaerobic decomposition and other water qualities_________________?
A. Both A and R are true and R is the correct explanation of A
B. Both A and R are true but R is not a correct explanation of A
C. A is true but R is false
D. A is false but R is true
✅ The correct answer is option A.
70. Property of a fluid by which molecules of different kinds of fluids are attracted to each other is called________________?
A. adhesion
B. cohesion
C. viscosity
D. compressibility
✅ The correct answer is option A.