CIVIL ENGINEERING PREPARATION FOR RPSC AEN, SSC JE, DMRC JE, NBCC ETC. QUESTION OF THE DAY-16

Q.151. The most economical section of a rectangular channel is one having hydraulic radius equal to

(a) twice the depth

(b) half the breadth

(c) half the depth

(d) twice the breadth

Answer : option C

Q.152. In a rectangular channel, the ratio of the specific energy at critical depth E_c to the critical depth y_c is

(a) 2.0

(b) 1.0

(c) 1.5

(d) 1.25

Answer : option C

Q.153. A 40 cm diameter circular timber column is 4 m long. The slenderness ratio of the column is :

(a) 20√2 
(b) 10
(c) 20 
(d) 40

Answer : option D

Q.154. The percentage of the fine aggregate of fineness modulus 2.6 to be combined with coarse aggregate of fineness modulus 6.8 of obtaining the aggregates of fineness modulus 5.4, is :
(a) 60% 
(b) 30%
(c) 40% 
(d) 50%

Answer : option D

Q.155. The discharge through a V-notch varies
(a) proportional to head (H)
(b) inversely proportional to angle θ
(c) proportional to H⁵៸²
(d) inversely proportional to tan θ/2

Answer : option C

Q.156. The dimension for angular velocity is
(a) T² 
(b) T⁻¹
(c) T¹ 
(d) T⁻²

Answer : option B

Q.157. Which of the following flow constants does not have any unit?
(a) Chezy’s C
(b) Manning’s N
(c) Both Chezy’s C and Manning’s N
(d) None of the above

Answer : option B

Q.158. The value of demolished material is known as:
(a) Scrap value 
(b) Salvage value
(c) Resultant value 
(d)Material value

Answer : option A

Q. 159. Slump test for concrete is carried out to determine:
(a) Strength 
(b) Durability
(c) Workability 
(d) Water content

Answer : option C

Q.160.The leaching action in concrete is the example of:
(a) decomposition 
(b) creeping
(c) crystallization 
(d) chemical reaction


Answer : option D