# Test Part 1 (Clo 1)

8 Questions | Total Attempts: 33  Settings  You have only 60 minutes to answer all questions. After you have taken test part 1, please proceed to take test part 2. Good luck!

• 1.
Define specific weight
• A.

Specific weight is mass that affected by gravitional force.

• B.

Specific weight is weight per volume

• C.

Specific weight is mass per volume

• D.

Specific weight is ratio between density liquid and density of water at 40C.

• 2.
If the depth of water is 15m below the water surface. Given Patm = 200kN/m2. Calculate its gauge pressure and its absolute pressure.
• A.

1471.5 N/m2, 34.715 kN/m2

• B.

1471500 N/m2, 3471.50 kN/m2

• C.

147.150 N/m2, 3.4715 kN/m2

• D.

147150 N/m2, 347.15 kN/m2

• 3.
Given a = 90cm and b = 30cm. Calculate pressure in pipe N if the pressure in pipe M is 13.14 kN/m2    * a is the other side of b
• A.

8829 Pa

• B.

7254 Pa

• C.

882.9 Pa

• D.

725.4 Pa

• 4.
Which of the following is minor loses in pipe
• A.

Friction in pipe

• B.

Inlet and exit transitions

• C.

Bends and elbows

• D.

Expansion and contraction

• 5.
A 400 liter/s of water is flowing through a pipe from A to B. The diameter of section A and section B   of the pipe is 16cm and 32 cm. Calculate its velocity of flow at section A and B
• A.

Velocity at A is 4.98 m/s, velocity at B is 19.9 m/s

• B.

Velocity at A is 0.0201 m/s, velocity at B is 0.0804 m/s

• C.

Velocity at A is 19.9 m/s, velocity at B is 4.98 m/s

• D.

Velocity at A is 0.0804 m/s, velocity at B is 0.0201 m/s

• 6.
Calculate the energy loss due to friction in the 55000cm length of pipe and diameter of 120mm when the flow rate is 1.65 m3/min. Given friction factor, f = 0.015.
• A.

2.434m

• B.

83.04m

• C.

18.434m

• D.

8.304m

• 7.
In an experiment, a density of liquid is 855 kg/m3. Calculate the specific weight of the liquid
• A.

8387.55 N/m3

• B.

0.855

• C.

855000 kg/m3

• D.

9368.55 N/m3

• 8.
Mass of a liquid is 5kg. Calculate its weight.
• A.

49.05 N/m2

• B.

5000 N

• C.

49.05 N

• D.

4.905 N Back to top