Power Plant - Day 4

1. Foundations are preferably built of concrete in the proportion of what measures of Portland cement: san: crushed stones?

A. 1:2:5

B. 2:4:6

C. 2:3:4

D. 1:2:4

2. The color of lubricating oil indicates:

A. does not indicated contamination

B. does not indicates qualities

C. qualities

D. viscosity

3. The components of a rotary pump:

A. gears

B. piston

C. impeller

D. screw

4. What is the term used in to express the ratio of specific humidities, actual versus saturated?

A. relative humidity

B. degree of saturation

C. absolute humidity

D. percent

5. In a diesel engine, what elements in the fuel that make to work of the lubricant more difficult?

A. water and ash content

B. high octane number

C. high cetane number

D. sulphur and asphaltene content

6. What is the color code of steam pipe lines?

A. silver gray

B. green

C. red

D. yellow

7. Which of the following refrigerants is most highly toxic?

A. ammonia

B. Freon 12

C. sulfur dioxide

D. methyl chloride

8. Assuming real process, the net entropy change in the universe is:

A. positive

B. must be calculated

C. equal to zero

D. negative

9. Enthalpy of an ideal gas is a function only of:

A. entropy

B. internal energy

C. temperature

D. pressure

10. Crankshaft of reciprocating type compressor is basically made of:

A. semi-steel

B. aluminum alloy

C. cast iron

D. steel forging


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