APSC AE CE Paper 1 Mock Test - 7 - Civil Engineering (CE) MCQ

C = (V²/R). (1/t)

Where t= time taken to travel the transition curve of length L_s, with a speed of V

t = L_s/V

C = (V^2/R). (V/L_s)

L_s = (V³/CR)

Bitumen adheres well to all normal types of road aggregates provided they are dry and free from dust. In the absence of water, there is practically no adhesion problem of bituminous construction. Adhesion problem occurs when the aggregate is wet and cold. This problem can be dealt with by removing moisture from the aggregate by drying and increasing the mixing temperature. Further, the presence of water causes stripping of binder from the coated aggregates. These problems occur when the bitumen mixture is permeable to water. 

IRC has specified the maximum value of stripping value of aggregate not to exceed 5%.

• It gives the graphical method of designing the channel dimensions based on Kennedy's Theory.

• The diagram has discharge plotted on the abscissa.

• The ordinates on the left indicate the slope and on the right water depth in the channel & critical velocity Vo.

Error is half the difference between the face left and face right observation. This discussion on The difference between face left and face right observation of a theodolite is 3'

Hence the correct answer is option A.

here M=O, here

Given,
Length of embankment(L) = 30 m
width of embankment(B) = 4 m
mean depth of embankment(dm) = 4 m
side slope is 2:1
Area of mid-section = Area of rectangular
portion + area of two triangular portion

= 1440 m³

As per is 456:2000, clause 23.2.1, L/d foe spans upto 10 m.

Skidding of vehicle occurs when centrifugal force exceeds lateral friction

During sudden closure of valve, a wave of high pressure intensity will be produced in the water, due to this high pressure circumferential and longitudinal stresses will be produced.

Hence the option B is correct.

where μ = Poisson’s Ratio

Hence, the correct option is (B).

Hence the option B is correct.

Critical Velocity

Critical Velocity is the maximum velocity of a fluid, above which, the streamline flow get the change to turbulent flow.

• Lower critical Velocity
  (i) It is the velocity at which the laminar flow stops.
  (ii) In this, the flow enters from laminar to transition period which exists between the laminar and turbulent flow.
• Upper Critical velocity
  (i) It is the velocity at which the turbulent flow starts.
  (ii) In this, the flow enters from the transition period to turbulent flow.

Here, 16× 20 = 320 mm,

Therefore pitch = 200 mm

Hence the correct answer is option C.

Hence the correct answer is option A.

Hence the correct answer is option A.

Hence the correct answer is option A.

The spacing of longitudinal bars measured along the periphery of the column shall not exceed 300 mm. In a pedestal of a column, the area of the longitudinal reinforcement shall not be less than 0.15% of the gross area.

Hence the correct answer is option C.

Bearing stress = 0.75 fy

Maximum shear stress = 0.45 fy.

Stress in slab base = 185 MPa for all type of steel.

Hence the correct answer is option D.

The drag force on an immersed object can be due to various reasons. It also depends on the direction of the object’s movement. Viscosity is the thickness of fluid that opposes the motion of the object. Gravity causes a ‘downward pull’ that slows horizontal movement. The pressure of the liquid on all sides of the object also hampers its motion.

Hence the correct answer is option D.

Hence the correct answer is option C.

The climatic and topographic factors mainly affect the rising limb whereas the geological factors (Basin Characteristics) determine the recession limb.

Darcy Weisbach Equation for friction losses in circular pipe

where

L = length of the pipe,

D = diameter of the circular pipe,

V = mean velocity of the flow,

f = Darcy’s friction factor = 4 × F’,

F’ = coefficient of friction

hf = head loss due to friction

For Laminar Flow

Friction Factor

For Turbulent flow