Dairy Engineering Practice Test 2

1. The device which is used for making temporary measurements of flow is _____________

Venturi

Orifice plate

Pitot static tube

Dull flow tube

2. Yeast is unlike bacteria in being __________

Prokaryotic

Unicellular

Multicellular

Eukaryotic

3. Cooled raw milk and cream exhibit which of the following flow behavior?

Newtonian

Sticky

None

Non Newtonian

4. Milk is a ______ fluid.

Extraneous

Visco-elastic

Viscous

Elastic

5. The instrument which is not suitable for the application in an automatic control scheme is _____________

Rotameters

Rotary piston meter

Orifice plate

Pitot static tube

6. Which bacteria is responsible for ripening Emmenthal cheese?

L.acidophilus

Streptococcus diacetylactis

Lactobacillus helveticus and Lb. bulgaricus

Bifidobacteria

7. Which of the following combination of characters is true for slime moulds?

Parasitic, Plasmodium with true walls, spores dispersed by air currents

Saprophytic, Plasmodium without walls, spores dispersed by water

Saprophytic, Plasmodium without walls, spores dispersed by air currents

Parasitic, Plasmodium without walls, spores dispersed by water

8. Example of positive displacement meter is _____________

Rotary piston meter

Variable area flow meter

Turbine meters

Venturi

9. Osmotic pressure is controlled by the number of molecules or particles, not the weight of solute.

False

True

10. Which of the following factors does not affect the viscosity of milk?

State and concentration of Fat

Spoilage

Temperature and Age of Milk

State and concentration of proteins