HVAC chapter 3
Using Circuit 5A shown below, the volt meter should be reading ______ volts.
12.75 400+450+150=1000 15/1000=0.015 0.015*150=2.25 15-2.25=12.75
Using Circuit 12A below, the total ohms of this circuit are ______ ohms.
1750. 2000*14000=28000000 2000+14000=16000 28000000/16000=1750.
Using Circuit 1A shown below, the amperage meter should be reading ______ amps.
2 1100/550=2
Using Circuit 7A shown below, the volt meter should be reading ______ volts.
20.2 1450+450+900=1800 40/1800=0.022 0.022*900=19.8 40-19.8=20.2
When an electric circuit is complete so that the current can flow, it is termed ____________________.
Closed
The parallel circuit has only one path for the electron flow.
False
The total current draw of the entire parallel circuit cannot be determined.
False
The voltage in a series circuit is the same for each device.
False
What is the formula for finding the total resistance (Rt) of a parallel circuit with two resistances?
Rt = (R1 * R2)/(R1 + R2)
Which of the following is the formula for finding the total resistance (Rt) in a series circuit?
Rt = R1 + R2 + R3
A parallel circuit is designed to supply more than one load in the system.
True
A series circuit is usually used for devices that are connected in the circuit for safety or control.
True
All electric circuits must have a complete path for electrons to flow through, a source of electrons, and some electric device (load) that requires electric energy for its operation.
True
An electric circuit is the complete path of an electric current, along with any necessary elements such as a power source and a load.
True
An electric circuit is the complete path of an electric current, along with any necessary elements, such as a power source and a load.
True
The current draw in a parallel circuit is determined for each part of the circuit, depending on the resistance of that portion of the circuit.
True
The most common device supplied with energy is an electric motor.
True
Two identical 115 volt light bulbs connected in series with 240 volts would __________.
burn correctly
A(n) ____________________ is an electric circuit that controls some major load in the system.
control circuit
When the path of the current flow is interrupted, the circuit is termed ____________________ or broken.
open
The voltage drop in a series circuit is __________.
proportional to the resistance in that part of the circuit
The ____________________ circuit allows only one path of current flow through the circuit.
series
A(n) ____________________ circuit is a combination circuit made up of series and parallel circuits and is used only sparingly in the industry.
series-parallel
The current draw in a series circuit is __________.
the same throughout the entire circuit
