3rd class stationary steam engineer license prep questions with correct answers 2025/2026

3rd class stationary steam engineer license prep questions with correct answers 2025/2026 _________ are necessary for complete combustion - Correct Answer time, temperature, mixture, and atomization if the steam pressure gauge indicates 200 PSIG, the absolute pressure is______ - Correct Answer 214.7 a boiler is operating at 400 PSI, and the safety valve opens at 410 PSI and closes at 398 PSI. The blowdown is______psi - Correct Answer 12 an oil cooler is commonly used with a(n) ________ when operating in conjunction with a turbo-generator - Correct Answer steam turbine a boiler is producing 40,000lb of steam/hr at a pressure of 100 PSI and a steam temperature of 500 degrees Fahrenheit. The steam produced is _______ steam - Correct Answer superheated the economizer on a boiler is used to _______ - Correct Answer add heat to the feed water blowers are normally used with________ boilers - Correct Answer water tube overheating of tubes on a boiler can be caused by________ - Correct Answer scale on tubes carbon dioxide in a condensate return system causes_________ - Correct Answer channeling