The wet bulb temperature is lower in dry air than in wet air at the same temperature. A dry bulb thermometer registers a higher temperature than a wet bulb thermometer except at __________ percent relative humidity.

A. Grey cast iron B. White cast iron C. Malleable iron D. Graphite

A. 1.5 B. 3 C. 5 D. 7

A. Pulverised fuel B. Travelling grate stoker firing C. Circulating fluidised bed D. Fluidised bed

A. Induced stresses B. Density C. Elastic properties D. Thermal properties