1.A uniform flow of normal depth 6 ft is developed upstream in a rectangular channel 10 ft wideand laid on a slope of 0.004. The Manning’s coefficient n is given as 0.0149. There is a smooth step on the floor. If the water depth immediately upstream of the step is 8 ft, determine the height of the step.

2.The true azimuth of line AB is 193 degrees 20'. The angle measured counterclockwise between line AB and another line AC is 205 degrees 10'. The true azimuth of line AC is:

a) 11 degrees 50'

b) 398 degrees 30'

c) 348 degrees 10'

d) 38 degrees 30'

3.The true bearing of OP is S 63 degrees 25' W. The true bearing of line OQ is S 10 degrees 10' W. The acute angle between the lines is:

a) 243 degrees 25'

b) 73 degrees 35'

c) 53 degrees 15'

d) 126 degrees 45'

4.The azimuth of line PQ is 293 degrees 30'. The smaller angle between lines PQ and PR measured clockwise is 75 degrees 45'. The azimuth of line PR is :

a) 369 degrees 15'

b) 217 degrees 45'

c) 9 degrees 15'

d) 142 degrees 15'