महाराष्ट्र अभियंता सेवा (स्थापत्य) गट अ २०१३ पूर्व परीक्षा

What is the hydraulic radius 'R' equal to for a hydraulically efficient triangular channel with a depth of flow, 'y' ?

In a solid-roller bucket type of energy dissipator, the energy dissipation is : 

0.5% of diluted raw sewage sample was used in a BOD test. The dissolved oxygen was found to be 8 mg/L and 5 mg/L at the beginning of BOD test and after 5 days of incubation at 20°C respectively. BOD5 at 20°C of raw sewage is :

What is Dissolved Oxygen (DO) saturation level in fresh water at 0°C assuming that chloride concentration is zero (0 mg/lit) ?

The sand used in rapid sand filter has effective size between :

Match List - I with List - II and select correct answer using codes given below the lists.

Which of the following factors affect disinfection process by chlorination ?
(a) Form of chlorine

(b) pH

(c) Concentration

(d) Contact time

(e) Type of organism

(f) Temperature

Match the following:

Which of the following methods can be adopted for proper disposal of rubbish ?

Aerosol is a :

Match the following:

The moisture content of raw sludge is 99% and it is thickened to 10 percent solids content.

Then the :

Consider the following statements related to noise pollution :

(a) Silence zone is 100 m distance from institutions, hospitals etc.

(b) Sound beyond 80 dB harms human hearing system

(c) Noise from automobiles is measured at 2 m free field distance

Which of the above statements are correct?

The liquid that perlocates through solid waste and extracts dissolved or suspended materials
from it, is known as:

Temporary hardness of water is also known as :

What is the Decibel (dB) value of sound during normal conversation ?

In sewage treatment, the horizontal flow grit chambers are designed to maintain a velocity very near to :

Group I contains parameters/property of bitumen and Group II lists methods/ Instrument :

In a district where the rainfall is heavy, a state highway of cement concrete pavement, 7.0 m wide with a transverse slope of 2.0% is to be constructed. The height of the crown with respect to the edges is ________ .

Two major roads with two lanes each are crossing in an urban area to form an uncontrolled intersection. With X as the number of conflict points when both roads are one way and Y when both roads are two-way what is the ratio of 'Y' to 'X' ?