Combination Circuits
In order for a firm voltage divider to operate properly, the load resistance value should be at least _________ times greater than resistance value of the voltage divider bleeder resistor.
10
What is the result when a branch of a parallel circuit has an open?
The rest of the circuit will operate but with a reduced total current.
A short circuit in the branch of a parallel circuit will ___________. a. cause an excessive amount of current to flow b. damage or destroy the power supply c. cause a short circuit across the power supply d. all of the above e. none of the above
all of the above
Which of the following is an application of a combination circuit? a. commercial building's lights b. electrical outlets controlled by a switch c. ceiling fan control d. all of the above e. none of the above
all of the above
Which of the following is not one of the seven general steps for solving a combination circuit. a. calculate the equivalent resistance for all parallel sections. b. calculate the total resistance of the circuit. c. calculate the total current d. calculate the RC time constant
calculate the RC time constant
A variable resistor is different from a fixed resistor because it __________.
can be adjusted
Which of the following is not a step for troubleshooting a parallel circuit to find a short? a. disconnect the power supply b. look for visible signs of damage c. connect an ohmmeter across the main line d. all of the above e. none of the above
none of the above
In a series-parallel circuit, components that are connected in parallel will display characteristics of a(n) ____________.
parallel circuit
In order to identify the series and parallel sections of a combination circuit, ______________.
trace the current path
A circuit that uses resistors to produce a voltage that is lower than the source voltage is called a __________.
voltage divider
