CFESA EXAM PACKAGE DEAL WITH COMPLETE SOLUTIONS SCORED A

In a parallel circuit the total resistance of the circuit will always be less than what resistance. - The smallest resistance What happens to voltage in a parallel circuit? - Its the same across all components What happens to voltage in a series circuit? - Voltage is shared between components Wh...

1.What is a BTU? - a. The amount of heat required to raise 1 pound of water 1◦ F. 2.How many BTU does it take to raise one pound of water 1◦ F? - a. 1 BTU 3.At what temperature does water boil? - a. 212◦ F 4.If enough heat is added to a pot of water to raise the temperature of the water to ...

What does kilo mean? - 1000 If a circuit is supplied with 100 volts and the total resistance of the circuit is 200 ohms, how much current will the circuit draw? - 100v/200ohm = 0.5A What does micro mean? - millionth What does mega mean? - million What does milli mean? - 1/1000 If you know the ...

You will need to purchase separate jaws for the Looking installation tool according to the tubing size. T or F - True Before opening a HC sealed system after the refrigerant has been removed you must? - Purge is for a minimum 5 minutes with nitrogen. What is different about HC compressor startin...

What happens in a LP tank as gas is drawn off? - The liquid boils off and creates additional gas. Is LP gas more dangerous to work with than natural gas? - LP is heavier than air so it does not dissipate, and is more volatile. Where does natural gas come from? - Wells deep in the ground. Where d...

1.What are the four inspections performed on a boiler as it is manufactured? - a. Steel is inspected before it is shipped; the fit up of a boiler shell is inspected after it is tack welded. The welding inspection after the boiler has been welded and the hydro-static pressure test. 2.How is a boil...

Where does natural gas come from? - Found in wells drilled deep in the ground Where does lp gas come from? - It is a byproduct of natural gas What are three gases often termed LP? - Propane, butane, ethane Are LP tanks filled with gas or liquid? - Liquid What happens in a LP tank as gas is drawn...

Voltage - Potential difference or driving force of electrons between two lines Current - Measured in amps. Movement of electrons through a circuit when a difference of potential exists. Direct current (DC) - Circuit electrons flow in only one direction from negative to positive. Frequency - (Her...

1. The function of the compressor is : - B. to lower the pressure in the evaporator so that the refrigerant temperature is lowered below the temperature of the air in the box . 2 . Forced air evaporator coils are commonly used because : - A. they absorb more heat in less time . 3 . Evaporator A ...