Stationary Engineer License Exam Prep with Complete Solutions

Stationary Engineer License Exam Prep with Complete Solutions A ______ fuse is necessary for a circuit with a load of 21,000 watts and a voltage of 220 volts. A. 100 B. 150 C. 175 D. 200 A. 100 amps. Note: V = IR Therefore I = V/R 21,000 amps /220 volts = 95 amps At 0 psig, how many BTU's are required to change 1 lb of water at 212F to steam? A. 144 B. 180 C. 970 D. 1190 C. 970 BTU 3 multiple choice options Radiation is: A. the movement of liquids or gases created by a temperature difference. B. Heat transfer by direct molecular contact C. the weight of a substance compared to unity D. Heat transfer by waves D. Heat transfer by waves Sensible heat is: A. An established relationship comparing any substance to the heat content of water. B. Heat quantity that can be felt or measured by a thermometer C. Heat quantity above the saturation point D. Measure of heat intensity B. Heat quantity that can be felt or measured by a thermometer All steam lines should be pitched: A. In the direction of flow B. Back towards the boiler C. Level D. For convenience A. In the direction of flow Draw a simple picture of a Sterling Boiler. Label it. Describe the water flow through a Sterling Boiler Feedwater flows to 1) rearmost drum 2) down to the mud drum 3) up to middle drum 4) to front drum through crossover pipes and 5) back down to mud drum Draw a picture of a Scotch Boiler. Label the firebox, combustion chamber, crown sheet, tubes, feed water inlet, steam outlet, stack, Economizer and Superheater. Draw a picture of a Firetube Boiler. Label it. Draw a picture of a Locomotive Fire Tube Boiler. Label it. Increasing the pressure will have what effect on the boiling point of water? A. No change B. Lower BP C. Higher BP D. Temperature will increase 2F for every psi C - higher Boiling Point