A safety lamp when inserted in the upper portion of a manhole causes flames. It indicates the presence of______________?

Related Mcqs:

The formula which accepts the value of rugosity coefficient n = 0.012 to be used in Manning’s formula, is given by______________________?

A. Bazin B. Crimp and Bruges C. William-Hazen D. Kutter...

A cylindrical ejector having its height 2 m fills after every 10 minutes with a peak sewage discharge of 0.0157 cumec. The diameter of the ejector chamber, is_____________________?

A. 2.30 m B. 2.40 m C. 2.45 m D. 2.50 m...

The ratio of depths at partial flo________________?

A. 1 – B. 1 – C. ½ (1 – D. ½ (1 –...

The ratio of minimum hourly flow to the average flow of sewage is_________________?

A. 1/4 B. 1/3 C. 1/2 D. 3/4...

For trunk and out-fall, the type of sewers generally used, is_____________________?

A. Standard egg shaped B. Circular shaped C. Horse shoe shaped D. Parabolic shaped...