Practice - SACA - Combination Circuits

In a series-parallel circuit, components that are connected in parallel will display characteristics of a(n) _________.

• Series circuit

• Parallel circuit

• Open circuit

• Short circuit

In order to identify the series and parallel sections of a combination circuit, _________.

• Eliminate the parallel section

• Use a DMM

• Trace the current path

• All of the above

• None of the above

Which of the following is not one of the seven general steps for solving a combination circuit?

• Calculate the equivalent resistance for all parallel sections.

• Calculate the total resistance of the circuit.

• Calculate the total current

• Calculate the RC time constant.

Which of the following is an application of a combination circuit?

• Commercial building's lights

• Electrical outlets controlled by a switch

• Ceiling fan control

• All of the above

• None of the above

A variable resistor is different from a fixed resistor because it _________.

• Doesn't have to be connected in a circuit to work

• Can be adjusted

• Can be used only in AC circuits

• All of the above

• None of the above

Which of the following is an application of a variable resistor?

• Radio volume controls

• Motor speed control

• Rotary dimmer switch

• All of the above

• None of the above

A circuit that uses resistors to produce a voltage that is lower than the source voltage is called a _________.

• Step-down transformer

• Reduction circuit

• Voltage divider

• Voltage converter

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

• 2

• 5

• 8

A short circuit in the branch of a parallel circuit will ________.

• Cause an excessive amount of current to flow

• Damage or destroy the power supply

• Cause a short circuit across the power supply

• All of the above

• None of the above

Which of the following is NOT a step for troubleshooting a parallel circuit to find a short?

• Disconnect the power supply

• Look for visible signs of damage

• Connect an ohmmeter across the main line

• All of the above

• None of the above