C:-Before winter season
D:-Before rainy season
Correct Answer:- Option-A
Question39:-Which of the following is not a landing aid?
A:-Beacon
B:-Airport surveillance radar
C:-Localiser antenna
D:-Glide slope antenna
Correct Answer:- Option-A
Question40:-The break water is provided
A--In artificial harbour
B:-With arm
:-Both of the above
D:-None of the above
Correct Answer:- Option-C
Question41:-Alcohol is used in manometers because
A:-Alcohol vaporises quickly
B:-Alcohol is cheaper then mercury
C:-Alcohol has larger value of bulk modulus of elasticity
D:-Alcohol is lighter as such gives longer length of column for precise measurement
Correct Answer:- Option-D
Question42:-Vacuum pressure is equivalent to
A:-Atmospheric pressure - Absolute pressure
-Atmospheric pressure + Absolute pressure
C:-Absolute pressure - Atmospheric pressure
D:-Absolute pressure + Atmospheric pressure
Correct Answer:- Option-A
Question43:-A pipe is said to be long if its length exceeds
A:-1000 times the diameter of the pipe
-500 times the diameter of the pipe
C:-80 times the diameter of the pipe
D:-The diameter of the pipe
Correct Answer:- Option-A
Question44:-Runoff can be estimated by
A:-Infiltration method
-Unit hydrograph
C:-Rational method
D:-Any of the above
Correct Answer:- Option-D
Question45:-The yield of a well depends on
A:-permeability of the soil
B:-area of aquifer opening into the wells
C:-actual flow velocity
D:-all of the above
Correct Answer:- Option-C
Question46:-Which of the following categories best describes the Hirakud reservoir?
A:-Reservoir for irrigation and power
B:-Reservoir for flood control, irrigation and power
C:-Reservoir for irrigation and water supply
D:-Reservoir for recreation and fishery
Correct Answer:- Option-B
Question47:-Turbidity is measured on
A:-Standard cobalt scale
-Standard silica scale
C:-Standard platinum scale
D:-None of the above
Correct Answer:- Option-B
Question48:-Lagooning is
A:-Method of sludge disinfection