TCFP Driver Op Exam Questions & Answers(SCORED A)

When water converts to a gas, water vapor, or steam, the water: a. immediately dissipates so it is rarely visible b. changes to droplets that will fall back to the surface c. only become visible if the ambient air temp is above 40 degrees d. only becomes visible as it rises away from the surface of the liquid and it begins to condense. - ANSWER-d Water may be used to smother fires in a combustible liquid a. when the liquid;s specific gravity is higher than 1 b. when the liquids specific gravity is less than 1 c. when the ambient air temp is below 32 d. when the ambient air temp is above 32 - ANSWER-a Which statement about water curtains is MOST accurate a. radiant heat does not pass through water, so water curtains are very effective b. radiant heat easily passes through water, rendering water curtains in effective c. radiant heat passes through water but with difficulty, so the effectiveness of water is difficult to determine d. Radiant heat passes through cold water but not warm water, so the effectiveness of water curtains depends on temp - ANSWER-b The fourth principle of pressure states that the pressure of a liquid in an open vessel is a. proportional to its depth b. independent of its depth c. dependent upon the length of time in the vessel d. variable even when vessels remain the same. - ANSWER-a The fifth principle of pressure states that the pressure of a liquid in an open vessel is a. variable for similar liquids