Oil heat - Study guides, Class notes & Summaries

How are reciprocating engines classified? - ANSWER-1) Cylinder Arrangement w/ respect to crankshaft (in-line, V-type, radial and opposed) 2) Method of cooling (liquid cooled, or air cooled) what are the different types of piston rings - ANSWER-compression rings, oil control rings and scraper rings what are the main causes of a cylinder having low compression - ANSWER-broken piston rings, rings that are not seated properly, burnt valves and poorly seating valves what is the purpose of...

MN Boiler License Questions With Complete Solutions Graded A+ a question an answer what are the conditions necessary for good combustion? a) low sulfur content b) Thermal, thermocoupler, tubular c) turbulence, temperature, time 3T's c) turbulence, temperature, time 3T's why is secondary air necessary in hand fired boilers? a) Necessary to burn the combustible gases b) if primary air should fail c) used only if sulfur content is high a) Necessary to burn the combustible gases whe...

HVAC: EPA 608 Certification Study Guide Questions and Answers | Latest Version | 2024/2025 | Rated A+ Are there alternative refrigerants that can be directly used in systems originally designed for R- 12? Why or why not? No, because these new refrigerants are not compatible with the lubricants and oils used in R- 12 systems. Explanation: The oils and lubricants in R-12 systems cannot properly interact with newer refrigerants, making direct replacements unfeasible. What type of o...

Oil Heat Exam Questions and Answers

Oil Heat Unit 32 Questions with 100% Correct Answers | Latest Version 2024 | Expert Verified | Ace the Test

According to NFPA31-2001, what is the minimum size of the vent pipe on an oil storage tank correct answers1 1/4 inch Nozzles are available with three different spray patterns: correct answersSolid, semi-hollow, hollow What type of motor is used on a residential high pressure oil burner correct answersSplit phase The most common motor speeds used in amerian made burners are correct answers1725 and 3250 rpm If an oil has a high viscosity correct answersIt is a thicker oil A service ...

Combustible Liquid - Correct answer-A liquid with a flash point ABOVE 100F 12.5 - Correct answer-If the current flowing out from an electrical panel is 12.5 amps, and it then flows through an electrical load of 1500 watts, what is the amperage of the remaining current flow of the return circuit? 1000 - Correct answer-If a hair dryer draws 8.3amps (in a home with 120-volt service), what is the wattage? *Power (P) = current (I) x voltage (V) Watts = amps x volts 1987 - Correct answer-The y...

Massachusetts Oil burner Practice Exam Questions and Answers 100% Pass The cross connection between two supply tanks shall not exceed? - Correct Answer ️️ -660 gallons When is an automatic draft control not required? - Correct Answer ️️ -When the equipment is designed to control the draft. Combustion performance testing can indicate: - Correct Answer ️️ -Improper air oil mixture, too much combustion air, and low pump pressure. If a second oil-burning appliance is installed in...

NORA Oil Heat Exam Review Questions with complete solutions

Why is UVB radiation also know as "burning rays"? (Ans- UVB wavelengths cause burning of the skin as well as cancer What is NOT an element of the skins acid mantle? (Ans- Blood What causes injured skin to restore itself to its normal thickness? (Ans- Hyperproduction of cells What are the items in the dermis that respond to touch, pain, cold, heat and pressure? (Ans- Sensory nerve endings What are most abundant in the fingertips, as opposed to other parts of the body? (Ans...