SECTION-2

##### Q61. The hydraulic depth of a channel is equal to

(a) D = A × T
(b) D =A/T
(c) D = 1/AT
(d) D = T/A
where A = Area of flow and T = Top width.

Ans: (b) D =A/T

##### Q62. If the depth of flow along the length of the channel is variable, then flow is known as

(a) laminar
(b) uniform
(c) non-uniform

Ans:  (c) non-uniform

(a) uniform
(b) laminar

(a) uniform
(b) laminar

##### Q65. The value of specific weight for water in S.I. units is equal to

(a) 981 N/m3
(b) 98.1 N/m3
(c) 9810 N/m3
(d) 1000 N/m3

,Ans:  (c) 9810 N/m3

(a) 0°
(b) 90°
(c) 128°
(d) 150°.

Ans:  (a) 0°

(a) 0°
(b) 90°
(c) 128°
(d) 150°.

Ans:  (c) 128°

##### Q68. Numerical value of gauge pressure is

(a) more than absolute pressure
(b) less than absolute pressure
(c) equal to the absolute pressure
(d) none of the above.

Ans:  (b) less than absolute pressure

##### Q69. Hydraulic mean depth is given by

(a) P/A
(b)A/P
(c) A × P
(d)1/AP
where A = Area and P = Wetted perimeter.

Ans: (b)A/P

##### Q70. For a superonic flow, velocity increases

(a) with the decrease of area of flow
(b) with the increase of area of flow
(c) when area of flow is constant
(d) none of the above.

Ans:   (b) with the increase of area of flow

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##### Read More Sections of Automobile Engineering

Each section contains maximum 80 Questions. To practice more questions visit other sections.

Hydraulics and Fluid mechanics MCQ-Section-1

Hydraulics and Fluid mechanics MCQ-Section-2

Hydraulics and Fluid mechanics MCQ-Section-3

Hydraulics and Fluid mechanics MCQ-Section-4

Hydraulics and Fluid mechanics MCQ-Section-5