Oil burner's test | 200 Questions| accurate Answers(GRADED A+)

In an electric circuit for the wattage to remain the same if the voltage drops, the amperage must - ANSWER Increase Atomizing type burners were designed to burn which type of fuel - ANSWER Type 2 fuel oil Pour point problems with outside above ground fuel tanks can be partially relieved by - ANSWER Reducing the pour point of No. 2 fuel oil by blending it with No. 1 fuel oil. A fuel oil storage tank cannot be installed - ANSWER In the furnace room with 5' of heating unit. The primary purpose of a fuel pump on a high-pressure burner is to - ANSWER Deliver oil at a constant and regulated pressure to the nozzle If the vacuum reading is substantially above the calculated reading, (with the burner running) the cause may be - ANSWER Plugged fuel filter, Kinked oil supply line, Check valve sticking With most new flame retention burners, the motor speed is - ANSWER 3450 To check for proper nozzle line cut-off, the pressure gauge is installed in the - ANSWER Nozzle Port Fuel units are generally set at the factory at - ANSWER 100psi The oil burner nozzle in a high-pressure burner performs the following functions - ANSWER Atomizes the oil Provides a pattern of oil spray Delivers a fixed amount of oil The nozzle flow rate, spray angle and pattern are directly related to - ANSWER •Tangential slots . Swirl chamber Orifice Cold oil or high viscosity problems may be eliminated by - ANSWER •Increasing pump pressure and reducing nozzle size • Installing a nozzle line pre-heater The following conditions or elements affect choosing the correct nozzle spray pattern - ANSWER •Air-oil mixing design of burner •. Shape of the chamber Which condition affects nozzle spray droplet size? - ANSWER Fuel Pump Pressure T