Q. The general average yield from standard tube wells is of order of____________

View solution

Q. Which of the following tubewell is suitable when a deep bearing stratum lies below an impervious layer and water contribution can take place through bottom only?

View solution

Q. In cavity tubewell, there is a possibility of water tapping through sides and the flow is radial.

View solution

Q. What is the measure of the fineness of an aquifer?

View solution

Q. What is Pack Aquifer Ratio?

View solution

Q. According to the Central Board of Irrigation and Power, the PA ratio for graded aquifer should be _______________

View solution

Q. For good design, the uniformity coefficient (Cᵤ) of the gravel material should preferably be ______

View solution

Q. The efficiency of the centrifugal pumps commonly used for lifting water from wells may be of the order of _____________

View solution

Q. A tube well is suitable when the subsoil formation is made up of _____________________

View solution

Q. Bored tube wells in rocky consolidated formations as are encountered in the South Indian States of our country are usually drilled by _____________

View solution

Q. Which of the following drilling method is unsuitable in loose formations such as unconsolidated sand and gravel or quicksand?

View solution

Q. Which drilling method is best suited for underground formations made of gravel, sand and clayey deposits?

View solution

Q. Which is the fastest method of drilling and especially useful in unconsolidated formations?

View solution

Q. A household tube well is called Abyssinian tube well falls under _________

View solution

Q. Duty of wells expressed in hectares the well can irrigate to bring a crop to maturity because of ___________

View solution

Q. Which of the following strainer is used for shallow irrigation tube wells particularly in deltaic regions of developing countries?

View solution

Q. Rewhiding the well involves ____________________

View solution

Q. Which of the following is an effective method for the development of well?

View solution

Q. The appropriate life of a tubewell in India is of the order of ______

View solution

Q. Incrustation of the tubewell pipes may lead to _________________

View solution