MCQ
781. For wave action in dams, the maximum height of freeboard is generally taken to be equal to
0.5 hw
0.75 hw
1.25 hw
1.50 hw
782. Pick up the correct statement from the following:
Absolute humidity at a given temperature is equal to weight of moisture present in a unit volume.
Relative humidity is the ratio of actual vapour pressure and saturation vapour pressure at the same temperature.
Relative humidity is the ratio of the weight of the vapours present per unit volume to the weight of vapours which could be contained at the same temperature when fully saturated.
All the above
783. ঘের অঙ্কন প্রক্রিয়া-
২টি
১টি
৫টি
৩টি
784. Horizontal acceleration due to earthquake results in
Hydrodynamic pressure
Inertia force into the body of the dan
Both (A) and (B)
None of the above
785. বামাবর্তী ঘেরের ক্ষেত্রে কোন বাহর সম্মুখ পূর্ণবৃত্ত বিয়ারিং হবে-
p-a±180°
p+a±180°
p-a ±90°
p+a±90°
786. কোন রেখার পূর্ণবৃত্ত নিয়ারিং 300° হলে হ্রাসকৃত বিয়ারিং কত?
45° SE
30° NE
90° SW
60° NW
787. Interception losses are due to (i) Evaporation (ii) Transpiration (iii) Stream flow The correct answer is
Only (i)
(i) and (ii)
(ii) and (iii)
(i), (ii) and (iii)
788. Sharp crested weirs are generally used
For large flows
For small flows
For streams carrying high sediment loads
For rivers carrying floating debris
789. the exit gradient in the absence of a downstream cut-off is
Unity
Infinity
Very large
790. বন্ধ ঘেরের ক্ষেত্রফল নির্ণয় পদ্ধতি সাধারণ-
২টি
৩টি
৪টি
৬টি
791. Infiltration capacity of soil depends upon
Number of voids present in the soil
Shape and size of soil particles
Arrangement of soil particles
All the above
792. From the data of the rain storm shown in the below figure, the value of Windex is
1.5 cm/hour
2 cm/hour
2.5 cm/hour
3 cm/hour
793. Pick up the correct statement from the following:
The ratio of total volume of voids in soil aggregates to the total volume of aggregate, is called Porosity
Water retained by the interstices due to molecular attraction, is called pellicular water
Sum of the percentage of specific yield and specific retention is 100
All the above
794. কেরিয়ার ওয়েভ জেনারেশনের জন্য ব্যবহৃত হয়-
থিওডোলাইট
রিফ্লেকটর
পাওয়ার ইউনিট
EDM ইউনিট
795. Water contains
One hydrogen atom and one oxygen atom
Two hydrogen atoms and one oxygen atom
One hydrogen atom and two oxygen atoms
Three hydrogen atoms
796. Which of the following spillways is least suitable for an earthen dam?
Ogee spillway
Chute spillway
Side channel spillway
Shaft spillway
797. If the loss due to friction in pipes is 4 m, the total losses in strainer and bends may be taken as
0.10 m
0.20 m
0.5 m
1.0 m
798. A runoff river plant is
A low head scheme
A medium head scheme
A high head scheme
None of the above
799. If the axial length of a drainage basin is 35 km and its form factor is 0.2, the total area of the basin is
205 sq. km.
215 sq. km.
225 sq. km.
245 sq. km.
800. Instantaneous unit hydrograph is a hydrograph of (i) Unit duration (ii) Unit rainfall excess (iii) Infinitely small duration (iv) Infinitely small rainfall excess The correct answer is
(i) and (ii)
(i) and (iv)
(ii) and (iii)
(iii) and (iv)