OHIO HYDRONICS CONTRACTOR PRACTICE
EXAM 2026 EXAMINATION TEST FULLY
SOLVED QUESTIONS 100% CORRECT
◉ The basic unit used to measure a quantity of heat is the ________.
Answer: British thermal unit
◉ All matter is considered to exist in one of ______ states. Answer:
Three
◉ When a vapor is heated to a temperature higher than its boiling
point, it is said to be _______. Answer: Superheated
◉ Wet-bulb temperature is the temperature of air if it were cooled to
_____% RH (relative humidity). Answer: 100
◉ A(n) _______ thermometer is an instrument designed to measure
temperature using a circular scale and pointer. Answer: Dial
◉ ________ forces or pressures occur when a fluid is not moving but is
at rest. Answer: Hydrostatic
, ◉ A _______ pressure gauge is a mechanical pressure gauge with a
curved tube made of thin metal that acts as a pressure-sensing
element. Answer: Bourdon tube
◉ Static pressure in a closed hydronic system _______ pump capacity.
Answer: Has no effect on
◉ A(n) ______ burner consists of a forced air fan that is used to bring
air under pressure into close contact with the fuel. Answer: Power
◉ The boiler is considered _______ if the combustion chamber is
mounted below the HTF. Answer: Dry-based
◉ ________ boilers are normally water-tube boilers that use a
configuration of finned tubes with headers as the heat exchanger.
Answer: Copper
◉ _________ draft is mechanical draft from air pulled through the
boiler combustion chamber with fans located in the breeching.
Answer: Induced
◉ Flue temperatures are required to be at least 250°F to prevent
_______ in the flue. Answer: Condensation
EXAM 2026 EXAMINATION TEST FULLY
SOLVED QUESTIONS 100% CORRECT
◉ The basic unit used to measure a quantity of heat is the ________.
Answer: British thermal unit
◉ All matter is considered to exist in one of ______ states. Answer:
Three
◉ When a vapor is heated to a temperature higher than its boiling
point, it is said to be _______. Answer: Superheated
◉ Wet-bulb temperature is the temperature of air if it were cooled to
_____% RH (relative humidity). Answer: 100
◉ A(n) _______ thermometer is an instrument designed to measure
temperature using a circular scale and pointer. Answer: Dial
◉ ________ forces or pressures occur when a fluid is not moving but is
at rest. Answer: Hydrostatic
, ◉ A _______ pressure gauge is a mechanical pressure gauge with a
curved tube made of thin metal that acts as a pressure-sensing
element. Answer: Bourdon tube
◉ Static pressure in a closed hydronic system _______ pump capacity.
Answer: Has no effect on
◉ A(n) ______ burner consists of a forced air fan that is used to bring
air under pressure into close contact with the fuel. Answer: Power
◉ The boiler is considered _______ if the combustion chamber is
mounted below the HTF. Answer: Dry-based
◉ ________ boilers are normally water-tube boilers that use a
configuration of finned tubes with headers as the heat exchanger.
Answer: Copper
◉ _________ draft is mechanical draft from air pulled through the
boiler combustion chamber with fans located in the breeching.
Answer: Induced
◉ Flue temperatures are required to be at least 250°F to prevent
_______ in the flue. Answer: Condensation
