S1 and S2 are the draw downs in an observation well at times t1 and t2 after pumping. For discharge Q and coefficient of transmissibility T, the relationship, is (A) S2 - S1 = (2.3Q/ ) log10 (t2/t1) (B) S2 - S1 = (2.3Q/4 ) log10 (t2/t1) (C) S2 - S1 = (2.3Q/4 ) loge (t2/t1) (D) S2 - S1 = (2.3Q/4 ) loge (t1/t2

S1 and S2 are the draw downs in an observation well at times t1 and t2 after pumping. For 

discharge Q and coefficient of transmissibility T, the relationship, is 

(A) S2 - S1 = (2.3Q/ ) log10 (t2/t1) 

(B) S2 - S1 = (2.3Q/4 ) log10 (t2/t1) 

(C) S2 - S1 = (2.3Q/4 ) loge (t2/t1) 

(D) S2 - S1 = (2.3Q/4 ) loge (t1/t2

by

1 Answer

Answer :

(B) S2 - S1 = (2.3Q/4 ) log10 (t2/t1) 

by

Related questions

Derivation of Thiem's formula Q = 2 (s1 - s2)/2.3 log10 (r2/r1) is based on the assumption (A) The aquifer is homogeneous, isotropic and of infinite depth and area (B) The well is sunk through the full depth of the aquifer (C) The flow lines are radial and horizontal, and the flow is laminar (D) All the above

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For the same draw down in two observations wells at distances r1 and r2, the times after start of pumping are t1 and t2 hours respectively. The relation which holds good is (A) t2 = r2/r1 × t1 (B) t2 = (r2/r1)² × t1 (C) t2 = (r2/r1)3 × t1 (D) t2 = (r2/r1) × t1 2

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Description : Given the following statements : S1 : If L is a regular language then the language {uv | uϵL, vϵLR} is also regular. S2 : L = {wwR} is regular language. Which of the following is true ? (A) S1 is not ... S2 is correct. (C) S1 is correct and S2 is not correct. (D) S1 is correct and S2 is correct.

Last Answer : (C) S1 is correct and S2 is not correct.

Given the following statements : S1 : SLR uses follow information to guide reductions. In case of LR and LALR parsers, the look-aheads are associated with the items and they make use of the left context available to the parser. S2 : LR grammar is a larger sub-class of context free grammar as compared to that SLR and LALR grammars. Which of the following is true ? (A) S1 is not correct and S2 is not correct. (B) S1 is not correct and S2 is correct. (C) S1 is correct and S2 is not correct. (D) S1 is correct and S2 is correct.

Description : Given the following statements : S1 : SLR uses follow information to guide reductions. In case of LR and LALR parsers, the look-aheads are associated with the items and they make use of the left context available to ... (C) S1 is correct and S2 is not correct. (D) S1 is correct and S2 is correct.

Last Answer : (D) S1 is correct and S2 is correct.

Given the following statements : S1 : The subgraph-isomorphism problem takes two graphs G1 and G2 and asks whether G1 is a subgraph of G2. S2 : The set-partition problem takes as input a set S of numbers and asks whether the numbers can be partitioned into two sets A Image Which of the following is true ? (A) S1 is NP problem and S2 is P problem. (B) S1 is NP problem and S2 is NP problem. (C) S1 is P problem and S2 is P problem. (D) S1 is P problem and S2 is NP problem.

Description : Given the following statements :  S1 : The subgraph-isomorphism problem takes two graphs G1 and G2 and asks whether G1 is a subgraph of G2.  S2 : The set-partition problem takes as input a set S of numbers and ... S1 is P problem and S2 is P problem. (D) S1 is P problem and S2 is NP problem.

Last Answer : (B) S1 is NP problem and S2 is NP problem.

Consider the following statements S1 and S2 : S1 : A hard handover is one in which the channel in the source cell is retained and used for a while in parallel with the channel in the target cell. S2 : A soft handover is one in which the channel in the source cell is released and only then the channel in the target cell is engaged. (A) S1 is true and S2 is not true. (B) S1 is not true and S2 is true. (C) Both S1 and S2 are true. (D) Both S1 and S2 are not true.

Description : Consider the following statements S1 and S2 : S1 : A hard handover is one in which the channel in the source cell is retained and used for a while in parallel with the channel in the target cell. S2 : A soft handover ... and S2 is true. (C) Both S1 and S2 are true. (D) Both S1 and S2 are not true.

Last Answer : (D) Both S1 and S2 are not true.

Given the following two statements: S1: If L1 and L2 are recursively enumerable languages over ∑, then L1⋃L2 and L1⋂L2 are also recursively enumerable. S2: The set of recursively enumerable languages is countable. Which of the following is correct? (A) S1 is correct and S2 is not correct (B) S1 is not correct and S2 is correct (C) Both S1 and S2 are not correct (D) Both S1 and S2 are correct

Description : Given the following two statements: S1: If L1 and L2 are recursively enumerable languages over ∑, then L1⋃L2 and L1⋂L2 are also recursively enumerable. S2: The set of recursively enumerable languages is countable. ... correct (C) Both S1 and S2 are not correct (D) Both S1 and S2 are correct

Last Answer : (D) Both S1 and S2 are correct