HVAC Contractor Study guides, Class notes & Summaries

HVAC CONTRACTOR EXAM

An instrument that measures potential differences between 2 points in an electrical circuit is called? A. potentiometer B. thermistor C. ohmeter D. voltmeter - Answer-voltmeter This device uses a thermal sensing bulb at the outlet of the evaporator to sense temperature and control superheat A. automatic expansion valve B. thermostatic expansion valve C. low side float D. schraeder valve - Answer-thermostatic expansion valve when installing a reversing valve on a heat pump, how many br...

HVAC Contractor Test 1 Questions and Answers Graded A+ An air conditioning and refrigeration contracting company must notify the department of all licensees who have assigned their licenses to the company and must notify the department within how many calendar days when any license whose license is assigned to the company has left the company 30 calendar days within ___ hours after a death of any employee as a result of a work related incident, you must report the fatality to the oc...

HVAC CONTRACTOR EXAM QUESTIONS AND ANSWERS ALREADY PASSED An instrument that measures potential differences between 2 points in an electrical circuit is called? A. potentiometer B. thermistor C. ohmeter D. voltmeter voltmeter This device uses a thermal sensing bulb at the outlet of the evaporator to sense temperature and control superheat A. automatic expansion valve B. thermostatic expansion valve C. low side float D. schraeder valve thermostatic expansion valve when...

The International Mechanical Code considers a "flammable Vapor" to be concentration of flammable constituents in the air which exceeds _____________ percent of its flammability limit. - correct answer-25% During installation or service of electrical controls, a digital multimeter set to voltage must be connected in what manner? - correct answer-In parallell Unvented fuel-burning room heaters are NOT permitted in a Group ___________ occupancy? - correct answer-A According to the Code, ...

An instrument that measures potential differences between 2 points in an electrical circuit is called? A. potentiometer B. thermistor C. ohmeter D. voltmeter - Answer-voltmeter This device uses a thermal sensing bulb at the outlet of the evaporator to sense temperature and control superheat A. automatic expansion valve B. thermostatic expansion valve C. low side float D. schraeder valve - Answer-thermostatic expansion valve when installing a reversing valve on a heat pump, how many br...

HVAC CONTRACTOR EXAM QUESTIONS AND ANSWERS

An instrument that measures potential differences between 2 points in an electrical circuit is called? A. potentiometer B. thermistor C. ohmeter D. voltmeter - Answer voltmeter This device uses a thermal sensing bulb at the outlet of the evaporator to sense temperature and control superheat A. automatic expansion valve B. thermostatic expansion valve C. low side float D. schraeder valve - Answer thermostatic expansion valve when installing a reversing valve on a heat pump, how many br...