ABSA: 4th Class Part B - Comprehensive Exam 4 150 Multiple Choice, 4th Class Part B ,Graded A+!!!

ABSA: 4th Class Part B - Comprehensive Exam 4 150 Multiple Choice, 4th Class Part B , Units 2 Temporary hardness in feedwater is caused by: Select one: a. Magnesium sulphate b. Calcium carbonate c. Magnesium bicarbonate d. Sodium nitrate c What is the recommended boiler water pH for wet layup? Select one: a. 10 b. 12 c. 7.5 d. 7 a A photoelectric flame scanner: Select one: a. Produces a steady voltage signal b. Requires a clear line of sight to the flame c. conducts current through the flame d. uses a pilot-stat b Heavy oil recovered using SAGD or CSS is properly referred to as Select one: a. bottoms b. crude c. tar d. bitumen d Humidifying units that force warm air through a wet pad, and return the air to the room, are called: Select one: a. Wetted element humidifiers b. Pan type humidifiers with plates c. Atomizing humidifiers d. Bypass type humidifiers a The kind of grease used for heavily loaded machinery operating at slow speeds is the: Select one: