2015-Quiz1-Solution

Student Name:_______________________ Student Number:__________________ MODULE 1 EXAMINATION The University of British Columbia Department of Civil Engineering Civil 315, Fluid Mechanics II 2 October 2015 50 minutes Page 1 of 8 DO NOT OPEN EXAM UNTIL ASKED TO DO SO!! Contravention of the following may result in a mark of zero for your exam: • One sheet of paper with writing on both sides and a calculator allowed. • No cellphones or other devices capable of wireless data transfer allowed. • No talking. • Write name and student number in ink on each page. • Write solutions on exam. • Produce photo ID upon request. • Do not leave the room without permission. • Do not leave during the last 5 minutes of the exam. • Stop writing and pass your exam to the nearest aisle when asked. Tips: • Use the backside of pages for scratch space. • Double-check your work, especially consistency of units. • Attempt all questions Markers Only Question Mark Q1 (5 Marks) Q2 (15 Marks) Total

Student Name:_______________________ Student Number:__________________ MODULE 1 EXAMINATION The University of British Columbia Department of Civil Engineering Civil 315, Fluid Mechanics II 2 October 2015 50 minutes Page 2 of 8 Question 1 (5 Marks) For the close tank with Bourdon-tube pressure gages tapped into it, what is the specific gravity of the oil and the pressure reading on the gage C? 1.0 m 0.5 m 0.5 m 1.0 m P A = 50.0 kPa P B = 58.5 kPa P C = ? Air Oil Water 12 = 133 + 8 *( 0 . 51 + 14 . 0 ) PB = Pa + 80111 . 0 ) i boy = Pg - Pa = 8 . 5×103 C Palm ) Pc = 58 . 5×103 + 18 . 5×103×0 . 5 ) + ( 9 . 8×103×1 . 0 ) = 72 . 55×103 ÷ 72 . 6×103 ( Pa ) Soil = ¥ 1 = ¥ 833 = 0 . 8673 = 0 . 82