Oil Furnace Heating Practice Tests Questions With Answers 100% Solved., Exams of Oil Engineering

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Oil Furnace Heating Practice Tests Questions

With Answers 100% Solved.

1. Question 1 points Fuel Pump fail to prime when Suction inlet vacuum is greater than _______ of vacuum 20 inches 30 inches 15 inches 25 inches - ✔✔✔ - 15 inches Which of the following is used to ignite the fuel oil in the heating system? Step down transformer Step up transformer - ✔✔✔ - Step up transformer Air enters the heating system in following order: From combustion chamber, to turbulator, to draft tube From draft tube, to turbulator, to combustion chamber From turbulator, to turbulator, to combustion chamber - ✔✔✔ - from draft tube, to turbulator, to combustion chamber

Malfunctions in the heating system cause primary safety control to _______ electrical resistance across the cell until the burner is automatically shut off. Reduce Increase - ✔✔✔ - increase A ______ carbon dioxide content is usually caused by insufficient draft or an overfired burner Low High - ✔✔✔ - high A _______ stack thermometer is generally used to measure the flue gas temperature in oil heating system: 200/2000°F 100/1000°F 200/1000°F 100/2000°F - ✔✔✔ - 200/1000°F Delayed ignition is mainly traced to a problem with which of the following: Stoker Electrodes Burner Nozzle Oil pump - ✔✔✔ - Electrodes

The advantage of the _______ of oil spray pattern is more stable operating under the same conditions and at the same flow rate. Hollow cone Solid cone - ✔✔✔ - hollow cone Rotary burners operate with high-pressure gravity False True - ✔✔✔ - False Which of the following oil burner has relatively high operating cost Vaporizing oil burner Pot-type oil burner Gun type oil burner - ✔✔✔ - Gun type oil burner If the oil tank is located above the burner, and the oil is supplied by gravity flow, the vacuum gauge must show a reading of _______: Zero Positive value Negative value - ✔✔✔ - zero

In two stage oil pump the _______ stage draws completely air-free oil: Both first and second Second First - ✔✔✔ - second The spray angle of oil from burner nozzle will generally range from ______: 60° to 90°. 30° to 90° 45° to 90° 70° to 90° - ✔✔✔ - 30° to 90° Fuel pump is located on the left side of the oil burner True False - ✔✔✔ - True ______ gives a twisting motion to the air stream just before it strikes the oil spray Stoker Turbulator Rotary system Draft tube - ✔✔✔ - Turbulator