541. 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.
Civil Engineering
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542. 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.
543. 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.
544. 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.
545. 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.
546. What is another term for “current assets” ?
A. Fixed assets
B. Non-liquid assets
C. Liquid assets
D. Ccash
✅ The correct answer is option C.
547. For efficient working of a sewer, it must be ensured that _____________?
A. Minimum velocity of 0.45 m/sec, is maintained at its minimum flow
B. A maximum velocity of 0.90 m/sec, is maintained at its maximum flow
C. Both A. and B.
D. Neither A. nor B.
✅ The correct answer is option C.
548. The width of a rectangular sewer is twice its depth while discharging 1.5 m/sec. The width of the sewer is______________?
A. 0.68 m
B. 0.88 m
C. 1.36 m
D. 1.76 m
✅ The correct answer is option C.
549. A ship whose hull length is 100 m is to travel at 10 m/sec. For dynamic similarity, at what velocity should a 1:25 model be towed through water ?
A. 10 m/sec
B. 25 m/sec
C. 2 m/sec
D. 50 m/sec
✅ The correct answer is option C.
550. The minimum diameter of sewer to be adopted is_________________?
A. 10 cm
B. 12.5 cm
C. 15 cm
D. 25 cm
✅ The correct answer is option C.