Oil burner's test questions 1-200 with correct answers

Oil burner's test questions 1-200 with correct answers 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 To burn one pound of fuel oil, it takes how many pounds of air? - Answer ️️ -•14.4 lbs. A layer of soot 1/16" thick will increase fuel consumption by (Fuel consumption increase by 2 % for each 1/32 of soot) - Answer ️️ -8% When sizing a combustion chamber for a firing rate of 1.00 gph you should provide a minimum floor space of (•20 square inches per 0.25 of GPH) - Answer ️️ -•Between 80 to 100 square inches The most common type of burner design in use today is the - Answer ️️ -High pressure atomizing Poor draft due to a faulty chimney may be improved by installing a good - Answer ️️ -•Draft inducer The pressure differential produced by chimneys is best measured with a draft gauge in - Answer ️️ -Inches of water colu