Oil burner's test questions 1-200 Exam Questions andAnswers 100% Accurate

When applying current through a conductor that is wound in coil, the magnetic lines of force created are used in - ANSWER-•Solenoid valve . Relay .Electric Motor If in an average 15-amp residential heating circuit, the fuse occasionally blows, you should - ANSWER-Install a 15-amp breaker To determine the "electrical potential" available at any given point in a circuit you should use a: - ANSWER-Voltmeter Oil burner ignition systems normally operate at what primary voltage - ANSWER-120 volts Oil burner ignition transformers operate at what secondary voltage range - ANSWER-10,000 to 14,000 In which type of system does the ignition transformer stay on for the full time the burner is running? - ANSWER-•Intermittent •b. Constant A typical ignition transformer is of what type? - ANSWER-step up During a normal start-up, when current is applied to a split phase burner motor with an open centrifugal switch - ANSWER-•The motor will not start The switch opens when the motor has almost reached full speed. - ANSWER-•Centrifugal The most speed(s) used in American made burners have been: - ANSWER-3450 rpm Because burner fans have beveled blades any dirt or lint in the blade will - ANSWER-•a. Reduce the amount of air for combustion The fan-limit control on a warm air unit is used to: - ANSWER-•Shut off the burner at a predetermined temperature •Start the blower at a predetermined temperature Stop the blower at a predetermined temperature In all residential oil heating systems, the high limit control must be - ANSWER-Line voltage and wired in series with the primary control