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# ESE 2021 Technical Quiz ||Lacey, Kennedy and Design of Lined and Unlined Canal

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Question 1

A channel designed by Lacey’s theory has a velocity of 0.88 m/sec. The silt factor is 1.1. Then hydraulic mean depth will be

Question 2

Consider the following statements:

(i) Giving equal weightages to horizontal and vertical creeps is one of the drawbacks of Kennedy’s theory.

(ii) Khosla’s theory for wires is based on potential theory.

(iii) Piping problem can be reduced by increasing the length of floor.

(iv) In lane’s weighted creep theory, horizontal creep is given less weightage compared to vertical creep.

(v) Which of the above statements is are correct?

Question 3

Consider a wide rigid-boundary canal with bed slope of 0.004, Manning‘s n = 0.18 and depth of flow 0.88m. the average boundary shear stress

Question 4

In lacey’s regime theory, the velocity of flow is proportional to

Question 5

According to Koshla’s theory of independent variables for seepage below hydraulic structure,
The exit gradient in the absence of downstream sheet pile is
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