1. What does the below equation represent?

a) Theoretical diameter

b) Theoretical speed

c) Minimum force

d) Minimum feed

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2. For a good design, entrance velocities should be between ____

a) 500 to 1500 ft. /min

b) 1000 to 4000 ft. /min

c) 10 to 200 ft. /min

d) 500 to 800 ft. /min

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3. The larger the diameter, the _____ is pressure drop.

a) Large

b) Less

c) Same as

d) Constant

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4. The efficiency for cyclone increases as

a) Pressure drop decreases

b) Pressure drop increases

c) Pressure drop is constant

d) No relation

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5. What is the pressure drop range of a cyclone?

a) 0.5 to 8.0 inches

b) 1.0 to 5.0 inches

c) 5.0 to 6.0 inches

d) 5.0 to 8.0 inches

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6. What does the following represents?

h_{ui} = 0.003ρ V_{c}^{2}

a) Inlet area

b) Inlet Velocity

c) Inlet head

d) Inlet pressure drop

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7. What does the below equation represent?

a) Pressure drop

b) Friction loss

c) Head loss

d) Depth loss

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8. Calculate inlet head, if density of fluid is 12.3 kg/m3 and critical velocity is 58 m/s?

a) 123.13

b) 2.145

c) 15.22

d) 58

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9. Calculate pressure drop for a cyclone with De to Dc ratio of 3/4?

a) 2.333

b) 1.8

c) 9.6

d) 2.4

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10. The overflow ratio is defined as ___

a) D/E

b) F/E

c) E/F

d) D/F